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DSTM-1

Installation and Operation Manual

STM-1 Multiplexer Module

DXC-100 MODULE

DSTM-1 STM-1 Multiplexer Module

Installation and Operation Manual

Notice This manual contains information that is proprietary to RAD Data Communications Ltd. ("RAD"). No part of this publication may be reproduced in any form whatsoever without prior written approval by RAD Data Communications.

Right, title and interest, all information, copyrights, patents, know-how, trade secrets and other intellectual property or other proprietary rights relating to this manual and to the DSTM-1 and any software components contained therein are proprietary products of RAD protected under international copyright law and shall be and remain solely with RAD.

DSTM-1 is a registered trademark of RAD. No right, license, or interest to such trademark is granted hereunder, and you agree that no such right, license, or interest shall be asserted by you with respect to such trademark.

You shall not copy, reverse compile or reverse assemble all or any portion of the Manual or the DSTM-1. You are prohibited from, and shall not, directly or indirectly, develop, market, distribute, license, or sell any product that supports substantially similar functionality as the DSTM-1, based on or derived in any way from the DSTM-1. Your undertaking in this paragraph shall survive the termination of this Agreement.

This Agreement is effective upon your opening of the DSTM-1 package and shall continue until terminated. RAD may terminate this Agreement upon the breach by you of any term hereof. Upon such termination by RAD, you agree to return to RAD the DSTM-1 and all copies and portions thereof.

For further information contact RAD at the address below or contact your local distributor.

International Headquarters RAD Data Communications Ltd. 24 Raoul Wallenberg St. Tel Aviv 69719 Israel Tel: 972-3-6458181 Fax: 972-3-6498250 E-mail: [email protected]

U.S. Headquarters RAD Data Communications Inc. 900 Corporate Drive Mahwah, NJ 07430 USA Tel: (201) 529-1100, Toll free: 1-800-444-7234 Fax: (201) 529-5777 E-mail: [email protected]

© 1993-2004 RAD Data Communications Ltd. Publication No. 371-201-01/04

mailto:[email protected]


DSTM-1 Installation and Operation Manual i

Contents

Chapter 1. Overview

1.1 Overview..................................................................................................................... 1-1 Purpose ................................................................................................................................1-1 Main Features.......................................................................................................................1-1 Software Updates .................................................................................................................1-3

1.2 Physical Description..................................................................................................... 1-4 DSTM-1 Module Set, General Description ............................................................................1-4 DSTM-1 Application Module ................................................................................................1-5 Interface Module ..................................................................................................................1-7

1.3 DSTM-1 Module Specifications.................................................................................... 1-8

Chapter 2. Module Installation and Operation

2.1 General ....................................................................................................................... 2-1 2.2 DSTM-1 Installation Rules............................................................................................ 2-2 2.3 DSTM-1 Installation ..................................................................................................... 2-3

Application Module Installation.............................................................................................2-3 Interface Module Installation.................................................................................................2-3 Connecting Fiber Optic Lines................................................................................................2-3 Connecting X-Link Cables (DSTM-1X for DXC-100 Stack only) ..............................................2-4

Chapter 3. Configuration Instructions

3.1 Introduction................................................................................................................. 3-1 Configure a Slot for the DSTM-1 Module ..............................................................................3-1 Configure a Virtual Nest and Slot for the DSTM-1 Module with X-Link (DXC-100 Stack only).3-4 Change a Module Set............................................................................................................3-5 Delete a Module Set .............................................................................................................3-5 Downloading or Upgrading Software.....................................................................................3-6

3.2 DSTM-1 Module Configuration.................................................................................... 3-7 AUG Configuration ...............................................................................................................3-8 Payload Link Configuration .................................................................................................3-13 Automatic Protection Switching (APS) Configuration............................................................3-28

3.3 Accessing the DSTM-1 Main Menu............................................................................ 3-30 View Configuration Menu ...................................................................................................3-32 View AUG Configuration ....................................................................................................3-33 View Payload Configuration ................................................................................................3-35 View APS Configuration ......................................................................................................3-38

Chapter 4. Alarms & Diagnostics

4.1 Diagnostics Menu ........................................................................................................ 4-1 Payload Line Diagnostics Center (Diagnostics Manager Menu) ...............................................4-3 Diagnostic Test Options ........................................................................................................4-5 BERT (Bit Error Rate Test) ......................................................................................................4-6 G.826 Statistics .....................................................................................................................4-9 Expose (Link Status) ............................................................................................................4-11 Error Insertion.....................................................................................................................4-16

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ii DSTM-1 Installation and Operation Manual

Re-initialize T1/E1 Framer ...................................................................................................4-19 Re-initialize STM-0 Mapper ................................................................................................4-20 Filter Errored Links (All Payloads).........................................................................................4-21 Diagnostic Loops ................................................................................................................4-23 In Service Links...................................................................................................................4-32 15-minute Performance Registers (T1 ESF Links)..................................................................4-33 Clear Counters....................................................................................................................4-34 STM-1 Transport Diagnostics Center ...................................................................................4-35 PCM Signaling Display Menu ..............................................................................................4-43

4.2 Utilities Menu............................................................................................................ 4-45 Cold Reset Device ..............................................................................................................4-46 Warm Reset Device ............................................................................................................4-47 Board Status .......................................................................................................................4-48 Link Mapping Table ............................................................................................................4-50

4.3 1+1 Redundancy Menu ............................................................................................ 4-51 APS Control/Status ..............................................................................................................4-52

4.4 X-Link Status Display (X-Link Modules Only).............................................................. 4-61 4.5 About Display............................................................................................................ 4-63

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DSTM-1 Installation and Operation Manual iii

List of Figures 1-1. STM-1 Mapping Structure ...................................................................................................... 1-2 1-2. DSTM-1 Application Module Panel ........................................................................................ 1-4 1-3. DSTM-1 Interface Module Panel ........................................................................................... 1-4 1-4. SC/UPC Receptacle ................................................................................................................ 1-5 2-1. X-Link Connections (APS Redundancy Configuration)............................................................ 2-4 3-1. Node Configuration Menu..................................................................................................... 3-1 3-2. Slot Configuration Menu ....................................................................................................... 3-2 3-3. Slot Configuration Submenu (Standalone DXC-100) .............................................................. 3-2 3-4. Slot Configuration Submenu (DXC-100 Stack with DSTM-1 X-Link)....................................... 3-3 3-5. Select a Card Type Submenu................................................................................................. 3-3 3-6. DSTM-1 Configuration Menu ................................................................................................ 3-7 3-7. AUG Configuration Menu (DSTM-1X in DXC-100 Stack) ....................................................... 3-9 3-8. AU3 Type Administrative Unit ............................................................................................. 3-10 3-9. AU4 Type Administrative Unit ............................................................................................. 3-10 3-10. DSTM-1 Local Timing........................................................................................................ 3-11 3-11. DSTM-1 Loop Timing........................................................................................................ 3-11 3-12. Payload-(1, 2, or 3) Link Configuration Menu (T1 Example) ............................................... 3-13 3-13. Payload-(1, 2, or 3) Link Configuration Menu (E1 Example) ............................................... 3-14 3-14. Link Configuration Menu (T1 Example).............................................................................. 3-24 3-15. Link Configuration Menu (E1 Example).............................................................................. 3-25 3-16. Copy Link Configuration Prompt ....................................................................................... 3-27 3-17. APS Configuration Menu ................................................................................................... 3-29 3-18. Nest Summary Menu......................................................................................................... 3-31 3-19. DSTM-1 Main Menu ......................................................................................................... 3-31 3-20. DSTM-1 Module View Configuration Menu ...................................................................... 3-32 3-21. View AUG Configuration Display (DSTM-1 in DXC-100) ................................................... 3-33 3-22. View AUG Configuration Display (DSTM-1X in DXC-100) ................................................. 3-34 3-23. View Payload Configuration Display (T1 Example) ............................................................. 3-35 3-24. View Payload Configuration Display (E1 Example) ............................................................. 3-35 3-25. View Individual T1/E1 Link Configuration Display (T1 Example) ........................................ 3-36 3-26. View Individual T1/E1 Link Configuration Display (E1 Example)......................................... 3-37 3-27. APS Thresholds Configuration Menu.................................................................................. 3-38 4-1. Diagnostics Menu.................................................................................................................. 4-1 4-2. Payload-1 Diagnostics Manager Menu................................................................................... 4-3 4-3. BERT Selection Menu............................................................................................................ 4-7 4-4. Start New Test Prompt .......................................................................................................... 4-8 4-5. G.826 Statistics Display ......................................................................................................... 4-9 4-6. T1/E1 Link Status Menu (E1 Link shown) ............................................................................. 4-11 4-7. STM-0 Mapper Path Status Display...................................................................................... 4-15 4-8. Link Status Menu - Error Insertion Choices for T1 Links ....................................................... 4-17 4-9. Link Status Menu - Error Insertion Choices for E1 Links........................................................ 4-17 4-10. Error Insertion Prompt (Typical) ......................................................................................... 4-18 4-11. Re-initialize Framer Prompt ............................................................................................... 4-19 4-12. Reset STM-0 Mapper Prompt ............................................................................................ 4-20

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iv DSTM-1 Installation and Operation Manual

4-13. No Errored Links Display ................................................................................................... 4-21 4-14. Links with Errors Display.................................................................................................... 4-22 4-15. DSTM-1 Diagnostic Loopbacks.......................................................................................... 4-24 4-16. Link Loopback Selection Screen ........................................................................................ 4-25 4-17. Process Loop Prompt......................................................................................................... 4-26 4-18. T1/E1 Link Local Loop....................................................................................................... 4-26 4-19. T1/E1 Link Line Loop ........................................................................................................ 4-27 4-20. Payload Loop .................................................................................................................... 4-27 4-21. STM-0 Mapper Loopback Selection Screen ....................................................................... 4-28 4-22. Process STM-0 Mapper Loop Prompt ................................................................................ 4-29 4-23. STM-0 Mapper Local Loop................................................................................................ 4-29 4-24. STM-0 Mapper Line Loop ................................................................................................. 4-30 4-25. ESF Statistics Display.......................................................................................................... 4-31 4-26. Payload Diagnostics Manager Menu (In-Service Links) ....................................................... 4-32 4-27. 15-Minute Performance Registers Display.......................................................................... 4-33 4-28. Transport Status Display .................................................................................................... 4-35 4-29. STM-1 Transport Loopback Selection Menu ...................................................................... 4-37 4-30. Process Loop Prompt......................................................................................................... 4-38 4-31. STM-1 Terminal Loopback ................................................................................................. 4-38 4-32. STM-1 Facility Loopback ................................................................................................... 4-39 4-33. STM-1 Path Facility Loopback ........................................................................................... 4-39 4-34. Laser Controls Menu ......................................................................................................... 4-40 4-35. Process Laser Command Prompt ....................................................................................... 4-41 4-36. Reinitialize Overhead Transport Prompt ............................................................................ 4-42 4-37. PCM Signalling Display Menu............................................................................................ 4-43 4-38. PCM Signaling Display Menu............................................................................................. 4-44 4-39. Utilities Menu.................................................................................................................... 4-45 4-40. Cold Reset Device Prompt................................................................................................. 4-47 4-41. Warm Reset Device Prompt .............................................................................................. 4-48 4-42. Board Status Screen (IS to OOS) ........................................................................................ 4-49 4-43. Board Status Screen (OOS to IS) ........................................................................................ 4-49 4-44. Link Mapping Table........................................................................................................... 4-50 4-45. 1+1 Redundancy Menu.................................................................................................... 4-51 4-46. APS Control/Status Menu................................................................................................... 4-52 4-47. APS Request Menu............................................................................................................ 4-55 4-48. APS Switchover Prompt..................................................................................................... 4-56 4-49. K1 and K2 Byte Description Display (Page 1)..................................................................... 4-58 4-50. K1 and K2 Byte Description Display (Page 2)..................................................................... 4-59 4-51. K1 and K2 Byte Description Display (Page 3)..................................................................... 4-59 4-52. 1+1 Redundancy Status Display ....................................................................................... 4-60 4-53. XLinks Status Display ......................................................................................................... 4-61 4-54. About DSTM-1 Module Display......................................................................................... 4-63

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DSTM-1 Installation and Operation Manual v

List of Tables 1-1. Possible T1/E1 Combinations (VC3-G.707 Link Numbering Scheme Only) ............................. 1-2 1-2. DSTM-1 Application Module Indicators.................................................................................. 1-6 1-3. DOC-3/DSTM-1 Interface Module Indicators ......................................................................... 1-7 1-4. DSTM-1 Optical Interface Specifications .............................................................................. 1-10 3-1. DSTM-1 Configuration Menu Options.................................................................................... 3-8 3-2. AUG Configuration Menu Field Descriptions ........................................................................ 3-10 3-3. Payload Link Configuration Menu Field Descriptions ............................................................ 3-14 3-4. VC3-G.707 Link Numbering Scheme ................................................................................... 3-16 3-5. AU4-VC3-Sequential Scheme............................................................................................... 3-19 3-6. STM-1 Standard/Sequential Numbering Schemes - Comparison (E1 Links)............................ 3-22 3-7. DSTM-1 Standard/Sequential Numbering Schemes - Comparison (T1 Links)......................... 3-23 3-8. Link Configuration Menu Field Descriptions ......................................................................... 3-25 3-9. APS Configuration Menu Field Descriptions.......................................................................... 3-29 3-10. DSTM-1 Main Menu Option Table..................................................................................... 3-32 3-11. DSTM-1 Module View Configuration Menu Options .......................................................... 3-33 4-1. DSTM-1 Diagnostics Menu Option Table ............................................................................... 4-2 4-2. Payload Diagnostics Manager Field Descriptions..................................................................... 4-4 4-3. Diagnostic Test Options.......................................................................................................... 4-5 4-4. BERT Selections...................................................................................................................... 4-7 4-5. G.826 Statistics Field Descriptions ........................................................................................ 4-10 4-6. T1/E1 Link Status Field Descriptions ..................................................................................... 4-12 4-7. STM-0 Mapper Path Status Display Field Descriptions .......................................................... 4-15 4-8. T1/E1 Link Error Insertion Selections..................................................................................... 4-18 4-9. Link Error Display Field Descriptions .................................................................................... 4-22 4-10. T1/E1 Link Loopback Options ............................................................................................ 4-26 4-11. STM-0 Mapper Loopback Options ..................................................................................... 4-29 4-12. ESF Statistics Display Field Descriptions .............................................................................. 4-31 4-13. 15-Minute Performance Registers Display Field Descriptions .............................................. 4-34 4-14. Line Status Display Field Descriptions................................................................................. 4-36 4-15. DSTM-1 Transport Loopback Options ................................................................................ 4-38 4-16. PCM Signaling Display Menu Field Descriptions ................................................................. 4-44 4-17. Utilities Menu Option Table ............................................................................................... 4-46 4-18. APS Status Menu Field Descriptions ................................................................................... 4-53 4-19. APS Request Menu Field Descriptions ................................................................................ 4-56 4-20. Redundancy Priorities......................................................................................................... 4-57 4-21. 1+1 Redundancy Status Display Field Descriptions ............................................................ 4-60 4-22. XLinks Status Display Field Descriptions ............................................................................. 4-62 4-23. About DSTM-1 Module Display Field Descriptions ............................................................. 4-64

Table of Contents

vi DSTM-1 Installation and Operation Manual

Overview 1-1

Chapter 1 Overview

1.1 Overview

Purpose This manual describes the technical characteristics, application, installation and operation of the DSTM-1 module used in the DXC-100 Multiservice Access Node.

DSTM-1 is a single-port STM-1 module set that provides SDH Path Terminating Equipment (PTE) functionality for the DXC-100. As such, it does not sit directly on the ring, but is used to feed a device that is on the ring. The DSTM-1 module can transmit and terminate any timeslot from up to 84 T1 or 63 E1 channels per STM-1 facility. When utilized with a companion STM-1 module set in an adjacent slot, 1:1 redundancy is provided.

The module assembly occupies a single backplane slot in the DXC-100 chassis.

Main Features The primary function of the DSTM-1 module is to transmit and terminate SDH-framed E1 and T1 channels, which are mapped in accordance with ITU standards:

• The 155.52 Mbps STM-1 SDH signal is made up of three synchronous payload envelopes or Administrative Units (AU), and each envelope handles an STM-0 SDH frame.

• Each envelope is made up of 7 Tributary Unit Groups (TUG).

• Each Tributary Unit Group is made up of four T1 or three E1 Tributary Units.

Automatic Protection Switching (APS) is supported to allow switching to another DSTM-1 module to provide 1+1 redundancy for critical links.

Since each payload envelope within the SDH frame can carry up to 28 T1 or 21 E1 links, the entire DSTM-1 may convey 84 T1 links or 63 E1 links. There are 3 available link numbering schemes - AU3 (VC3-G.707), AU4 (VC3-G.707), and AU4 (VC3 Sequential). There is also the capability of mixing T1 and E1 traffic in the same DSTM-1 frame, but this can be done at the Payload Envelope (STM-0) level only when using the VC3-G.707 link numbering scheme. The VC3-Sequential numbering scheme does not allow mixed T1/E1 modes.

Each payload signal is configured as T1 or E1, and each payload is framed by a 51.84 Mbps mapper. Each mapper conveys either T1 or E1 Links; T1 and E1 traffic cannot be mixed within the same payload. The three 51.84 mappers are sequentially interleaved into a 155.52 SDH signal.

Chapter 1 Overview DSTM-1 Installation and Operation Manual

1-2 Overview

E1 channels are mapped to VC-12 containers and T1 channels are mapped as VC-11 channels. These Virtual Containers (VC's) are then assembled into Transmission Groups (TUG) and then Administrative Units (AU) or payload envelopes before conversion to an optical signal. Figure 1-1 shows how the T1 and E1 channels are combined to form a DSTM-1 signal.

Figure 1-1. STM-1 Mapping Structure

A payload envelope can contain either 28 T1 or 21 E1 signals; the resulting T1/E1 combinations possible when using the VC3-G.707 link numbering scheme are shown in Table 1-1. The actual mix of T1/ E1 links is based on grooming at the AU level.

Table 1-1. Possible T1/E1 Combinations (VC3-G.707 Link Numbering Scheme Only)

Number of T1 Number of E1

0 63

28 42

56 21

84 0

With the VC3-G.707 scheme, link numbering is contiguous for T1, but there are gaps in the link numbers for E1. This was done to allow independent synchronous payload envelope (SPE) formatting without the need to "juggle" link numbers and indices. Table 3-4 shows the link numbering format for the VC3-G.707 scheme.

The DSTM-1 module terminates both the T1 and E1 payload and the associated framing signals on the same card, providing a cost-effective method for performing A-law to µ-law conversion. SF (DF) and ESF framing modes are supported for T1 links. CRC and CAS framing modes are supported for E1 links. Automatic Protection Switching (APS) is supported to allow sparing for critical links.

The DSTM-1 module has extensive statistic gathering capability. Each of the T1/E1 framers can report sync status, frame errors, CRC errors, frame slips, and several link alarm conditions.

Diagnostics include integral BERT and loopback diagnostics for in-network testing. For voice applications, call processing ABCD signaling bits can be monitored.

DSTM-1 Installation and Operation Manual Chapter 1 Overview

Overview 1-3

X-Link Support

Due to the volume of bandwidth a DSTM-1 module set supports, DXLC capabilities have also been incorporated into its design. Expansion link connectors with integral indicators have been added, similar to a subordinate DXLC module, so that the DSTM-1 module can utilize direct X-Link connections to DXCC modules for applications in a DXC-100 stack.

When this feature is implemented, DSTM-1 traffic can be directed to the DXCC without utilizing the nest mid-plane bus; this will further leverage the physical capacity of that nest. If X-Link support is going to be used, the required software can be ordered at the time of DSTM-1 application module purchase and pre-installed by RAD, or be upgraded later.

Alternately, the DSTM-1 module can utilize the nest-resident TDM bus for multiplexing purposes just as any other application module would.

Software Updates For software update procedures, refer to the Utilities chapter of the DXC-100 Installation and Operation Manual.


1-4 Physical Description

1.2 Physical Description

DSTM-1 Module Set, General Description The module set is designed to occupy a single backplane slot in the DXC-100 chassis. The DSTM-1 module set comprises two circuit card modules: an application module and an interface module.

TEST

STATUS

DSTM-1

READY

STATUSTEST

1B

1A

X-LINKS

NEST ID

PAYLOAD

DSTM-1/OC-3

RX

TX

LASER

1310nmSingle Mode

IntermediateReach

SC/UPC

Figure 1-2. DSTM-1 Application Module Panel

Figure 1-3. DSTM-1 Interface Module Panel

The application module (front card) contains the backplane, switching, and framing logic. Expansion link connectors with integral indicators are also provided so that the DSTM-1 module can utilize direct X-Link connections to DXCC modules for DXC-100 stack applications.

The interface module (rear card) has two simplex single-mode 1310 nm SC/UPC receptacles; one for transmit and one for receive. These are mounted on this module in a 60° downward sloping manner (with an integrated shutter) to relieve mechanical fiber strain, minimize the likelihood of direct eye exposure, and reduce airborne contaminant (e.g., dust particle) collection.


Physical Description 1-5

Figure 1-4 is an illustration of an interface module SC/UPC receptacle.

Figure 1-4. SC/UPC Receptacle

Two types of interface modules available: Long Reach for ranges of 15 to 40 km, and Intermediate Reach for ranges of 0 to 15 km. Both interface modules have been designed with a dual purpose in mind; they can also be used as part of a DOC-3 module set.

If only one DSTM-1 module set is being utilized within a DXC-100 unit, it must be located in an even-numbered slot. If two module sets are installed as a redundancy pair, the primary module must be located in an even slot, and the secondary (redundant) module must be located in the next-higher adjacent odd slot. If two module sets are being installed as independent modules, they should each be located in an even slot.

Thumbscrews are provided at the top and bottom of the panels to secure the modules in the chassis and to make an electrical connection to frame ground for regulatory emission compliance. The electrical connection to frame ground also protects the modules from static discharge. A top card ejector is provided on the application module to facilitate removal (and insertion).

DSTM-1 Application Module

Front Panel

The DSTM-1 is a module set is designed to occupy a single backplane slot in the DXC-100 chassis.

There are five LEDs on the application module and one on the interface module. There is also a Nest ID number display that is used with the X-link configuration.

The panel of the DSTM-1 module is shown in Figure 1-2.

STATUS (red/green) indicators are provided separately for both the DSTM-1 optical line and the aggregate payloads. Similarly, TEST (yellow) indicators are provided separately for both the DSTM-1 line and the associated STM-0 payload(s). A DXC-100-compliant READY (green/red) indicator is provided to assess the status of the module set in general. Since the DSTM-1 application module also has the capability to directly interface a DXCC module in a DXC-100 stack, a LED nest number identification display is also provided.

Table 1-2 explains the functions of the indicators located on the module panel.


1-6 Physical Description

Table 1-2. DSTM-1 Application Module Indicators

Indicator State Description

Green STM-1 optical line is operational and functioning properly. The STM-1 envelope is free of Framing Errors, and there are no Alarms.

STATUS (Line)

Red The STM-1 line is in an Alarm state which may include receive loss of signal and/or framing errors. This may be due to one of the following:

• Invalid configuration, such as a mismatch of AU types.

• Optical link has failed, or is not installed.

• Rear interface is malfunctioning.

Yellow Line port is in test. Flashing Yellow An error has been detected during a test.

TEST (Line)

OFF No testing is being conducted. Green Payload envelopes in all three mappers are free of framing errors and all

in-service T1/E1 links are operational and functioning properly. STATUS (Payload)

Red A Payload Alarm condition exists, such as Loss of Pointer, AIS, RDI, etc. Yellow T1/E1 link(s) is/are in loop or the link is in Link BERT. Flashing Yellow An error has been detected during a test.

TEST (Payload)

OFF No testing is being conducted. Nest ID Number Module is configured for X-Link, and is currently online.

Flashing Nest ID Number

Module is configured for X-Link, and is currently in standby.

“AB” is displayed Module is configured for X-Link, but no cables are installed.

“E1” (2 X-LINKS FROM SAME DXCC) is displayed.

Both X-Links on the board are connected to the same DXCC.

“E2” (X-LINKS WITH DIFF ID NUMBER) is displayed.

Card is assigned to a nest ID, but cable does not match.

“E3” (2 X-LINKS IN USE) is displayed.

Both X-Links are trying to operate at the same time.

“E5” (XLINK TOP WRONG PORT ID) is displayed.

X-Link cables are connected wrong. Refer to Chapter 2 for details and an illustration of these connections.

Nest ID

“E6” (XLINK BOTTOM WRONG PORT ID) is displayed

X-Link cables are connected wrong. Refer to Chapter 2 for details and an illustration of these connections.


DSTM-1 Module Specifications 1-7

Table 1-2. DSTM-1 Application Module Indicators (Cont.)


Green Module is fully operational and in an online state.

Flashing Green Module is fully operational, and in a standby state.

Red Module is in a system bus error state.

Flashing Red Module is in offline (fault) state

READY

OFF Module is not powered up.

X-LINK (Top)

Green Denotes that this is the active X-Link Port.

X-LINK (Bottom)

Green Denotes that this is the active X-Link Port.

Other LED Indications

If all the front panel LEDs are cascading from top to bottom, the module is downloading software to memory.

Do not interrupt the software upgrade while it is in progress, otherwise the DSTM-1 module configuration may be damaged. When updating the module software from DSTM-1 to DSTM-1X, this process may take up to 10 minutes. In the event of damage, please contact RAD Technical Support Department.

If all front panel LEDs are off except the READY LED, it indicates that all links are Out of Service.

If all front panel LEDs are flashing, it indicates that the rear interface module is missing or the device is being forced Out of Service.

Interface Module The interface connector of the DSTM-1 module is located on its interface module, which plugs into a separate compartment at the rear of the DXC-100 chassis.

Figure 1-3 shows the panel of the DSTM-1 interface module.

The rear DOC-3/DSTM-1 interface module provides a yellow LASER LED indicator to actively display when the laser is on for personnel safety purposes. See Table 1-3 for details.

Table 1-3. DOC-3/DSTM-1 Interface Module Indicators


Yellow Laser is active LASER

OFF Laser is inactive.

Note: The laser will be shut down when the DSTM-1 application module (front card) is removed. It can also be deactivated manually via the Transport Diagnostics menu.

Caution


1-8 DSTM-1 Module Specifications

1.3 DSTM-1 Module Specifications

STM-1 Ports Physical Layer ITU-T Rec. G.957

Line Dual optical fiber cable

Transmitter MQW Laser Mode diode

Bit Rate 155.520 Mbps ±4.6 ppm

Timing • Internal timing (locked to the DXC master clock)

• Loopback timing (transmit timing locked to clock recovered from received STM-1 signal)

Optical Characteristics See Table 1-4

Operating Wavelength 1310 nm

Connector Pair of SC connectors

Range • Short haul: 0 to 15 km

• Long haul: 15 to 40 km

Payload Ports Number of Payload Ports See Table 1-1

Compliance • E1: ITU-T Rec. G.732, G.823 and ITU-T Rec. G.704

• T1:

Framing • E1: CAS, CRC, CAS-CRC, or unframed

• T1: D4, ESF, or unframed

Nominal Data Rate • E1: 2.048 Mbps

• T1: 1.544 Mbps

Timing • Locked to the DXC master clock

• DXC master clock can be locked to one of the recovered internal E1 port clock signals


DSTM-1 Module Specifications 1-9

General Indicators • READY (green/red): indicates the status of the module set in general

• STATUS (red/green): indicates link status separately for the STM-1 line and the payload port

• TEST (yellow) indicates test status separately for the STM-1 line and the payload port

• Nest number indicator

Diagnostics • User-activated STM-1 local and remote loopbacks

• User-activated local and remote loopbacks on each payload port

• User-activated local loopbacks on each VC-12 port

Performance Monitoring • External, internal VC-12, VC-4 ports: complies with RFC 2258

• Internal E1 ports: complies with RFC 1406

Timeslot Allocation User-defined mapping, any timeslot to any timeslot

Routing of E1 Ports to TU-12s

User-defined mapping, any E1 port to any TU-12

Routing of T1 Ports to TU-11s

User-defined mapping, any T1 port to any TU-11

Power Consumption 20W

Configuration Programmable via DXC-100 management by ASCII terminal, Telnet or RADview Management System

Physical

Front Main Module • Height: 263 mm (10.3 in)

• Width: 25 mm (9.8 in)

• Depth: 213 mm (83.8 in)

Rear Interface Module • Height: 263 mm (10.3 in)

• Width: 25 mm (9.8 in)

• Depth: 127 mm (50.0 in)


1-10 DSTM-1 Module Specifications

Table 1-4. DSTM-1 Optical Interface Specifications

Receiver Intermediate Reach Long Reach

Detector type InGaAs PIN InGaAs PIN

Maximum -31dBm -31dBm Sensitivity

Typical -36dBm -36dBm

Saturation -8dBm -8dBm*

Connector Type SC/UPC (on module) SC/UPC (on module)

Transmitter Intermediate Reach Long Reach

Optical Source MQW Laser MQW Laser

Wavelength range 1260-1360nm 1260-1360nm

Maximum -8dBm 0dBm* Launch Power

Typical -11dBm -3dBm

Minimum -15dBm -5dBm

Connector Type SC/UPC (on module) SC/UPC (on module)

Typical Maximum Range 15km 40km

* - Optical interface should not be directly looped back without minimum 10 dB inline attenuator.

Note

General 2-1

Chapter 2 Module Installation and Operation

2.1 General

This Chapter provides installation, configuration and operation instructions for the DSTM-1 module.

The information presented in this chapter supplements the DXC-100 installation, configuration and operation instructions contained in the DXC-100 Installation and Operation Manual.

Before performing any internal settings, adjustment, maintenance, or repairs, first disconnect all the cables from the module, and then remove the module from the DXC-100 chassis. No internal settings, adjustment, maintenance, and repairs may be performed by either the operator or the user; such activities may be performed only by a skilled technician who is aware of the hazards involved. Always observe standard safety precautions during installation, operation, and maintenance of this product.

The DSTM-1 module contains components sensitive to electrostatic discharge (ESD). To prevent ESD damage, always hold the module by its sides, and do not touch the module components or connectors.

DSTM-1 modules may include Class 1 lasers. For your safety: • Do not look directly into optical connectors while the DSTM-1 module is

operating. • Do not attempt to adjust the laser drive current. • The use of optical instruments with this product will increase eye hazard.

Laser power up to 1 mW at 1300 nm could be collected by an optical instrument.

• Use of controls or adjustment or performing procedures other than those specified herein may result in hazardous radiation exposure.

Warning

Caution

Warning

Chapter 2 Module Installation and Operation DSTM-1 Installation and Operation Manual

2-2 DSTM-1 Installation Rules

2.2 DSTM-1 Installation Rules

• If two module sets are installed as a redundancy pair, the primary module must be located in an even slot, and the secondary (protection) module must be located in the next-higher adjacent odd slot. Slot 1 cannot be used for a DSTM-1 module.

• If two module sets are being installed as independent (non-redundant) modules, they must each be located in an even-numbered slot. Slot 1 cannot be used for a DSTM-1 module.

• If one or more module sets are being installed as independent modules, the next-higher adjacent odd slot must be left empty. This is because the odd-numbered slot is automatically reserved for use by a secondary module for even-numbered slot protection. Independent modules will not operate in an odd slot.

• The maximum number of fully-utilized DSTM-1 modules that can be used in a nest will vary depending on the system in which they are installed:

For a standalone DXC-100, a maximum of 2 redundant pairs (4 modules total) per nest can be used.

For a DXC-100 stack system, a maximum of 1 redundant pair (2 modules total) per nest can be used; therefore, a maximum of 8 redundant pairs (16 modules total) could be supported per DXC-100 node using all 8 nests.

For a DXC-100 stack with DSTM-1 modules configured for X-link operation (see Figure 2-1), a maximum of 4 redundant pairs (8 modules total) per nest can be used; therefore, a maximum of 8 redundant pairs (16 modules total) could be supported per DXC-100 node using a minimum of 2 nests.

• The maximum number of partially utilized DSTM-1 modules that can be used in a nest will vary depending on the system in which they are installed:

For a standalone DXC-100, allow a maximum of 2 independent redundant pairs (4 modules total) per nest to ensure that no inter-optical module blocking scenarios are encountered.

For a DXC-100 stack system, a maximum of 4 independent redundant pairs (8 modules total) can be supported per nest.

Up to 32 independent redundant pairs (64 modules total) can be supported per DXC-100 node. For a DXC-100 stack with DSTM-1 modules configured for X-link operation (see Figure 2-1), a maximum of 4 independent redundant pairs (8 modules total) can be supported per nest. Up to 8 independent redundant "virtual nest" pairs (16 modules total) can be supported per DXC-100 node.

DSTM-1 Installation and Operation Manual Chapter 2 Module Installation and Operation

DSTM-1 Installation 2-3

2.3 DSTM-1 Installation

The DSTM-1 module components are extremely sensitive to electrostatic discharge. When handling this module, wear an anti-static wrist strap connected to frame ground to prevent damage to circuits from electrostatic discharge.

Application Module Installation 1. Hold the application module vertically (component side left).

2. Slide the application module into a slot in the front of the DXC-100 chassis following the white card guides.

3. Open both card ejectors until they are at a 90-degree angle to the module, then slide the module further into the slot until the hook on the card ejectors is inside the lip of the DXC-100 chassis.

4. Slowly close the card ejectors, which will seat the application module in the slot.

5. Tighten the thumbscrews at the top and bottom of the application module.

Interface Module Installation 1. Hold the interface module vertically (component side right).

2. Slide the interface module into a slot in the rear of the DXC-100 chassis following the white card guides.

3. Seat the interface module by slowly pressing it into place.

4. Tighten the thumbscrews at the top and bottom of the interface module.

Connecting Fiber Optic Lines

DXC-100 modules may include Class 1 lasers. For your safety: • Do not look directly into optical connectors while the DXC-100 module is

operating. • The use of optical instruments with this product will increase eye hazard.

Laser power up to 1 mW could be collected by an optical instrument.

On the rear interface module, lift the shutter on the transmit (TX) SC/UPC receptacle and insert the SC/UPC connector for the outgoing (transmit) fiber optic line into the receptacle. The connectors should snap into place.

Using the same procedure, connect the incoming (receive) fiber optic line to the receive (RX) SC/UPC receptacle.

ESD Caution

Warning

Chapter 2 Module Installation and Operation DSTM-1 Installation and Operation Manual

2-4 DSTM-1 Installation

Connecting X-Link Cables (DSTM-1X for DXC-100 Stack only) Connect the X-Link cables from the DXCC Interface to the DSTM-1X application modules. See Figure 2-1 for an example of an X-link connection. The DXCC port used must be consistent with above information.

TEST

STATUS

DSTM-1

READY

STATUS

TEST

1B

1A

X-LINKS

NEST ID

PAYLOAD

TEST

STATUS

DSTM-1

READY

STATUS

TEST

1B

1A

X-LINKS

NEST ID

PAYLOAD

DXCC

STATUS

2A

2B

3A

3B

4A

4B

6A

6B

7A

5A

5B

7B

8A

8B

DXCC

STATUS

2A

2B

3A

3B

4A

4B

6A

6B

7A

5A

5B

7B

8A

8B

Working(Even Slot)

Protection(Odd Slot)

PrimaryDXCC

SecondaryDXCC

Figure 2-1. X-Link Connections (APS Redundancy Configuration)

Introduction 3-1

Chapter 3 Configuration Instructions

3.1 Introduction

This Chapter provides specific configuration information for DSTM-1 modules. The configuration activities are performed by means of the management system used to control the DXC-100.

All the menus in this manual identify the DSTM-1 module as STM1.

This Chapter covers only the configuration activities specific to DSTM-1 modules: for general instructions and additional configuration procedures, refer to the DXC-100 Installation and Operation Manual.

Configure a Slot for the DSTM-1 Module The following procedure describes how to assign and configure a slot for the DSTM-1 module set.

1. From the DXC-100 Main Menu, move your cursor to the System Configuration field and press <Enter>. The following menu appears:

Node Configuration Menu

Slot Configuration Nest Profile System Clock Source Menu Users Menu Port IP Addresses SNMP Agent Configuration Date and Time ENvision Plus Configuration TACACS Plus

Figure 3-1. Node Configuration Menu

2. Place your cursor on the Slot Configuration field and press <Enter>. The following menu appears, displaying slots numbered from 1 to 11.

Note

Chapter 3 Configuration Instructions DSTM-1 Installation and Operation Manual

3-2 Introduction

For a DXC-100 stack, use the following sequence to reach the Slot Configuration Menu: System Configuration→Nest Profile→Move your cursor to the nest where the DSTM-1 module will reside→ Press S.

Nest #1 Slot Configuration Menu

Slot# Device Type Name Redundancy ----- ---------------- ------ ------------ 1 Disable 2 STM1 STM1 #1 Disable 3 STM1 STM1 #2 Disable 4 Octal High Speed OHS Disable 5 Disable 6 Router Router Disable 7 Disable 8 Disable 9 Disable 10 Octal T1/E1 OT1/E1 Disable 11 Disable N+1 Redundancy Switchover: Automatic N+1 Redundancy Restore: Manual Change Card = [Enter key] [D]elete Card [P]ort/Link Configuring

Figure 3-2. Slot Configuration Menu

3. Move your cursor to the slot number where the DSTM-1 module will reside, and press <Enter>. The following menu appears:

Slot Configuration

Nest............: 1 Slot............: 2 Slot Name.......: STM1 #1 Card Type.......: STM1 TS Allocation: Normal

Figure 3-3. Slot Configuration Submenu (Standalone DXC-100)

Note

DSTM-1 Installation and Operation Manual Chapter 3 Configuration Instructions

Introduction 3-3

Slot Configuration

Nest............: 1 Slot............: 6 Slot Name.......: Card Type.......: STM1X Assigned to Nest: 3 Nest Id for STM1X/OC3X modules should match the one displayed on the front card.

Figure 3-4. Slot Configuration Submenu (DXC-100 Stack with DSTM-1 X-Link)

4. Place your cursor on the Slot Name field and press <Enter>. Type in a slot name or number of up to 11 alphanumeric characters and press <Enter> again.

5. Select a card type. Move your cursor to the Card type field and press <Enter>. The Card Type Menu appears:

Select a Card Type

1) XCC 2) XLC 3) XLCOT1E1 4) STM1 5) STM1X 6) OC3 7) OC3X 8) STS1 9) HDS3 10) DS3 11) E3 12) OT1E1 13) QT1 14) OHSD 15) QHSD 16) DS0-DP 17) OCU-DP 18) TAM 19) ROUTER 20) OCTAL VOICE Enter Card Type Number: 0

Figure 3-5. Select a Card Type Submenu


3-4 Introduction

6. Press <Enter>, type in the number of the DSTM-1 or DSTM-1X module (4 or 5), then press <Enter> again to store the device type.

7. Press X to save module type and return to the Slot Configuration Submenu.

8. Move your cursor to the TS Allocation field (standalone DXC-100 only) and press the <Enter> key until Normal or Alternate is displayed. See note below for an explanation.

When two independent DSTM-1 modules are installed in a standalone DXC-100 system, DSTM-1 ports with the same timeslot allocation type cannot be mapped to each other. The TS Allocation field for one card must be set to Normal, and the other card must have the TS Allocation field set for Alternate. An error message will be presented if you attempt to map connections between DSTM-1 modules with similar TS Allocation settings. Also as a result of the way timeslots are allocated, a timeslot on the DSTM-1 module cannot be mapped to a timeslot on the same physical module in a standalone DXC-100 system. In a DXC-100 stack system, timeslots may be mapped to timeslots on the same physical module.

9. Press X to save changes. When prompted: “Update Configuration? Are you sure (Y/N)?”, press Y. You are returned to the Slot Configuration Menu.

:

If you are configuring a DSTM-1X module, refer to the Configure a Virtual Nest and Slot for the DSTM-1 Module with X-Link (DXC-100 Stack only) procedure starting on page 3-4.

Configure a Virtual Nest and Slot for the DSTM-1 Module with X-Link (DXC-100 Stack only)

1. From the DXC-100 Main Menu, move your cursor to the System Configuration field and press <Enter>. The Node Configuration Menu appears.

2. From the Node Configuration Menu, place your cursor on the Nests Profile field and press <Enter>.

3. Move your cursor to the nest number that will be assigned to the DSTM-1X (virtual nest number), and press <Enter>. The Nest #X Profile Menu appears.

4. Move your cursor to the Nest Type field and ensure that “Not Cfg’d” is set.

5. Press X to exit and save.

6. Determine the physical DXC-100 nest and slot where the DSTM-1X will be installed.

7. Access the Slot Configuration Menu (System Configuration→Nests Profile→cursor to Nest →[S]lot Conf.) for the nest and configure a slot as DSTM-1X. For the primary (even) slot, select Assigned to Nest number (virtual nest) to match the nest number chosen above in step 3.

Note

Note


Introduction 3-5

If the Nest ID on the DSTM-1X and the DXCC port are mismatched, configurations may make it to the module, but connection mapping will not work.

8. Press X to exit and save.

9. After saving the configuration, the Nest Configuration screen should show the nest type as DSTM-1X/OC3X.

10. You may now go to the Slot Configuration Menu and configure the DSTM-1 port/link parameters.

:

To map timeslots, refer to the DSTM-1X module using its Nest/Slot address, not the virtual nest number.

Change a Module Set

The DSTM-1 module components are extremely sensitive to electrostatic discharge. When handling this module, wear an anti-static wrist strap connected to frame ground to prevent damage to circuits from electrostatic discharge.

1. Physically remove the front and rear cards from the DXC-100 unit in accordance with Chapter 2.

:

The laser on the interface module (rear card) will be shut down when the DSTM-1 application module (front card) is removed.

2. On the Slot Configuration Menu, move your cursor to the slot where the module resided, and press D. A message appears stating, “All existing connections for this slot will be deleted.” Press Y to confirm the action or N to cancel.

If you do not remove the card prior to pressing D, the following message appears: “- ALERT!- Can not delete a device that is present”.

3. Physically insert the new module set into the DXC-100 unit.

Ensure that the DSTM-1 application module (front card) is only installed in the nest with a DSTM-1 interface module (rear card). If installed with any other rear card, damage to the rear card may result.

4. Configure the slot for the new module set by following the normal slot configuration procedure.

:

A module set may also be changed without deleting the old module set by skipping step 2 of this procedure.

Delete a Module Set To delete a module set, follow steps 1 and 2 of the above procedure.

ESD Caution

Caution

Note

Note

Note

Caution

Note


3-6 Introduction

Downloading or Upgrading Software Generic software upgrade instructions for upgrading or installing module software may be found in the Utilities chapter of the DXC-100 Installation and Operation Manual. When upgrading DSTM-1 module software from standard to X-Link configuration, follow the procedure below to download the DSTM-1X software.

Care should be taken to insure that the right type of software is downloaded (X-Link or Non-X-Link). X-Link versions will always contain the letter X within the file name.

Converting from DSTM-1 to DSTM-1X (X-Link) Software :

DSTM-1 modules with X-Link MUST be configured as a redundant pair.

1. Download DSTM-1X software to the DSTM-1 module(s). There will now be a Critical Alarm shown on the Node Summary Menu for that slot, and a Type Mismatch will be shown when you Expose the alarms for that slot.

2. Determine the even-numbered slot where the working module will reside and configure it for DSTM-1X. Move the module to the slot if necessary.

3. Configure the adjacent odd-numbered slot for the protection module as DSTM-1X. Move the module to that slot if necessary.

4. Connect X-Link cables to both modules as shown in Figure 2-4.

Caution

Note


DSTM-1 Module Configuration 3-7

3.2 DSTM-1 Module Configuration

This section will guide you through configuring the DSTM-1 Administrative Units, configuring the T1/E1 links, and configuring APS for a DSTM-1 module set. :

A module does not have to be physically present to be configured, but the slot must be configured for that type of module.

Navigation:

Standalone DXC-100

Main Menu

↓

System Configuration ↓

Slot Configuration

↓

Select Slot with DSTM-1 Module ↓

[P]ort/Link Cfg

OR DXC-100 Stack

Main Menu

↓


Nests Profile

↓

Select Nest with DSTM-1 Module ↓

[S]lot Conf. ↓


[P]ort/Link Cfg

Slot #4 STM1 Configuration Menu -------------------------------

AUG Configuration Payload-1 Configuration Payload-2 Configuration Payload-3 Configuration APS Configuration

Figure 3-6. DSTM-1 Configuration Menu

The DSTM-1 Configuration Menu allows you to access several submenus from which you can configure the DSTM-1 module. Table 3-1 explains the options available from the DSTM-1 Configuration Menu.

Note


3-8 DSTM-1 Module Configuration

Table 3-1. DSTM-1 Configuration Menu Options

Option Description

AUG Configuration Allows you to configure the DSTM-1 Port Administrative Unit Group Type (AU3, AU4, or AU4-VC3 Seq.), Line Timing (Local or Loop), and Link Type (T1 or E1).

Payload-1 Configuration Allows you to configure the T1 or E1 links that are part of Payload-1.

Note: T1 and E1 Links cannot be mixed within the same payload.





Automatic Protection Switching (APS) Configuration

Allows you to configure Automatic Protection Switching.

AUG Configuration

The AUG configuration must be accomplished prior to configuring the T1/E1 links.

1. Use the appropriate method from the Navigation Box below to access the AUG Configuration Menu.

Navigation:

Standalone DXC-100

Main Menu

↓ System Configuration

↓ Slot Configuration

↓


[P]ort/Link Cfg

↓ AUG Configuration

OR DXC-100 Stack Main Menu


↓ Nests Profile

↓ Select Nest with DSTM-1 Module

↓ [S]lot Conf.

↓ Select Slot with DSTM-1 Module

↓ [P]ort/Link Configuring

↓ AUG Configuration

Note



AUG Configuration ------------------

AU Mode..................: AU4 Line Timing..............: Local Assigned to Nest...: 2 Group Type ------------------ Payload-1...: E1(VC-12) Payload-2...: E1(VC-12) Payload-3...: E1(VC-12) AU3 & AU4 modes follow G.707 compliant VC-3 numbering schematic.

Figure 3-7. AUG Configuration Menu (DSTM-1X in DXC-100 Stack)

2. Move the cursor to the field that you want to configure and press <Enter>. Refer to the field descriptions in Figure 3-10 to assist you in setting up the AUG Configuration parameters.

3. Once the fields have been configured, press X to save the changes. When prompted: “Update Configuration? Are you sure (Y/N)?”, press Y. You are returned to the Configuration Menu.



Table 3-2. AUG Configuration Menu Field Descriptions

Field Description

AU Mode: (option field)

The top-most level of the configuration hierarchy is the administrative unit (AU) type. This field allows you to select the AU type to be used.

Note: Check with your network supplier to see which type is being used on the network. The other end of the line MUST be configured for the same AU type.

• AU3 stands for Administrative Unit, Level 3. This means that the payload pointer for each payload envelope is consolidated with their respective payloads into one unit. Since there are three (3) payload envelopes in a DSTM-1 frame, there are also three (3) AU3 administrative units. AU3 Mode uses the G.707-compliant VC3 numbering scheme. See Figure 3-8 for a diagram of AU3 type.

AU3T1 or E1Payload

AU3T1 or E1Payload

STM-1

AU3T1 or E1Payload

Figure 3-8. AU3 Type Administrative Unit

• AU4 stands for Administrative Unit, Level 4. An AU4 applies to the entire DSTM-1 payload in a blanket fashion. Instead of having three Administrative Units in a DSTM-1 frame like AU3, the AU4 structure is the only administrative unit in a DSTM-1 Frame. AU4 Mode uses the G.707-compliant VC3 numbering scheme. See Figure 3-9 for a diagram of AU4 type.

AU4T1 or E1Payload

T1 or E1Payload

STM-1

T1 or E1Payload

Figure 3-9. AU4 Type Administrative Unit

• AU4-VC3 Seq stands for Administrative Unit, Level 4, Sequential Link Numbering. The structure of the Administrative Unit is the same as that of a standard AU4 (Figure 3-9), however, the links are numbered in a sequential manner. See Table 3-5 for details on how the links are numbered.



Table 3-2. AUG Configuration Menu Field Descriptions (Cont.)

Field Description

Line Timing: (option field) (See important note on next page)

This field is used to set the optical line timing for the DSTM-1 line (not a system clock).

The clock sources are as follows:

• Local Timing (Default Setting) - When the DSTM-1 line is in local timing mode, the reference clock source of the DSMC.2 or DXNM is used to drive the tributaries and payloads with the same clock. Subsequently, the Tx clock of the STM-1 port is locked to that reference also. The timing reference is carried from the backplane and up through the SDH hierarchical chain up to and including the STM-1 level. The clock source of the DSMC.2 or DXNM may be referenced to its own Stratum 3 clock, or one of the T1/E1 links in the STM-1 itself. The DSTM-1 module does not operate with a free running clock reference of its own during normal operation.

DSTM-1Remote (Far End)

STM-1 Device or SystemDXC-100

Rx Tx

Rx

STM-1PortTx

Clock

BackplaneInterface

and SwitchFabric

DSMC.2

TXData

RXData

Data

DataClk

Clk

Figure 3-10. DSTM-1 Local Timing

• Loop Timing - The Remote (Far End) DSTM-1 device is used as the timing reference. The recovered receive (Rx) byte clock (19.44 MHz) from the STM-1 port receiver may be used as a timing reference for the STM-1 port transmitter (Tx). The STM-1 port receive byte clock does not cross the plesiochronous demarcation boundary, nor is it used by the DSMC.2 or DXNM as a timing reference for driving the system backplane and the switch fabric. Line loop timing only applies to the STM-0 and STM-1 layers.

DSTM-1

DSMC.2

Remote (Far End)STM-1 Device or SystemDXC-100

Rx Tx

Rx

STM-1PortTx

BackplaneInterface

and SwitchFabric

REF

RxData

TxData

Figure 3-11. DSTM-1 Loop Timing



Table 3-2. AUG Configuration Menu Field Descriptions (Cont.)

Field Description

Optical Line Timing: (option field) (Continued)

Note: The DSTM-1 card can have link timing set to either "local" or "loop". When the DXC-100 IS NOT using a T1 or E1 link inside the STM-1 line for DXC-100 reference timing, the following combinations are legal:

• (STM-1: local, remote equipment: local)

• (STM-1: loop, remote equipment: local)

• (STM-1: local, remote equipment: loop)

The STM-1: loop, remote equipment: loop) combination is not legal.

When the DXC-100 IS using a T1 or E1 link inside the STM-1 line for DXC-100 reference timing, the following combinations are legal:

• (STM-1: loop, remote equipment: local)

• (STM-1: local, remote equipment: loop)

The (STM-1: loop, remote equipment: loop) combination and the (STM-1: local, remote equipment: local) combination are not legal.

Assigned to Nest: (display field) (DSTM-1X only)

Allows you to view the virtual nest number for a DSTM-1X module.

Payload-1: (option field) This field allows you to configure the type for Payload 1 as either T1 (VC-11) or E1 (VC-12). All links within the payload must match this type.





Payload Link Configuration The Payload Configuration Menu can be used to used to access the T1/E1 Link Configuration, or to copy one link’s configuration to all links in the payload.

1. Use the appropriate method from the Navigation Box below to access the Payload Configuration Menu.

Navigation:

Standalone DXC-100

Main Menu



↓


[P]ort/Link Cfg

↓ Payload-(1, 2, or 3) Configuration

OR DXC-100 Stack

Main Menu


↓ Nests Profile

↓


[S]lot Conf. ↓


[P]ort/Link Cfg


Slot #4 Payload-1 Link Configuration ---------------------------- Link Link Clear Unused Number Name T1 Framing FDL TSs ------ ------- ----- ------- --- ------ 01 Link 01 Disabled T1 ESF 54016 Idle 02 Link 02 Disabled T1 ESF T1.403 Idle 03 Link 03 Disabled T1 D4 N/A Idle 04 Link 04 Framed T1 ESF T1.403 Idle 05 Link 05 Framed T1 D4 N/A Idle 06 Link 06 T1 Unframed N/A N/A N/A 07 Link 07 Disabled T1 ESF T1.403 Idle 08 Link 08 Disabled T1 ESF T1.403 Idle 09 Link 09 Disabled T1 ESF T1.403 Idle 10 Link 10 Disabled T1 ESF T1.403 Idle 11 Link 11 Disabled T1 ESF T1.403 Idle 12 Link 12 Disabled T1 ESF T1.403 Idle 13 Link 13 Disabled T1 ESF T1.403 Idle 14 Link 14 Disabled T1 ESF T1.403 Idle [N]ext page [C]opy cfg to all

Figure 3-12. Payload-(1, 2, or 3) Link Configuration Menu (T1 Example)



Slot #4 Payload-2 Link Configuration ---------------------------- Link Link Clear Number Name E1 Framing ------ ---- ----- ------- 29 Link 29 Disabled E1 30 Link 30 Disabled E1-CRC 31 Link 31 Disabled E1-CAS 32 Link 32 Disabled E1-CAS-CRC 33 Link 33 Framed E1-CAS-CRC 34 Link 34 Unframed N/A 35 Link 35 Disabled E1-CRC 36 Link 36 Disabled E1-CRC 37 Link 37 Disabled E1-CRC 38 Link 38 Disabled E1-CRC 39 Link 39 Disabled E1-CRC 40 Link 40 Disabled E1-CRC 41 Link 41 Disabled E1-CRC 42 Link 42 Disabled E1-CRC [N]ext page [C]opy cfg to all

Figure 3-13. Payload-(1, 2, or 3) Link Configuration Menu (E1 Example)

From this menu, you can access the individual links or copy one link’s configuration to all links within that payload. The information contained in each field on the screen is detailed in Table 3-3.

Table 3-3. Payload Link Configuration Menu Field Descriptions

Field Description

Link Number: (display field)

Displays the Link Number (1-28) of the link that you are configuring.

Link Name: (display field) Displays the user-defined name for the link.

Clear T1/Clear E1: (display field)

“Clear” refers to a condition where the module passes data through without reformatting it in any way (essentially, the module acts the same as a wire).

One of the following status indications will be displayed: • T1 Unframed (T1 only) • Disabled (T1 and E1) • Framed (T1 and E1) • E1 Unframed (E1 only).

Framing: (display field) Displays the line type that was configured for the link. One of the following line types will be displayed: • T1 D4 (T1 only) • T1 ESF (T1 only) • E1 (E1 only) • E1 CAS (E1 only) • E1 CRC (E1 only) • E1-CAS-CRC (E1 only) • N/A (T1 Unframed or E1 Unframed)



Table 3-3. Payload Link Configuration Menu Field Descrip (Cont.)

Field Description

FDL: (T1 display field) Displays the type of Facility Data Link (FDL) that has been configured as either 54016 (AT&T Technical Reference 54016) or T1.403 (ANSI specification T1.403). Selectable only in T1 mode.

It has no meaning for D4 Networks. Displays N/A for T1 Unframed, and will not be displayed for any E1 links.

Unused TSs: (T1 display field)

Displays the state of unused timeslots as either Busy (All Ones) or Idle (0). Selectable only in Clear T1/E1 Disabled mode. Displays N/A for T1 Unframed or E1 Unframed.

Idle = All eight (8) bits in the assigned link timeslots are set to all ones during a Link RED alarm condition.

Busy = The hex value FE (11111110) is set to all assigned link timeslots during Line RED alarm condition.

T1/E1 Link Numbering Schemes

Prior to configuring the links, it is necessary to understand how the links are numbered in the DSTM-1 module.

The DSTM-1 module can convey up to 84 links divided into three payloads (28 T1 links or 21 E1 links in each). Each payload is made up of seven TUG2s. Each TUG2 can consist of either 4 T1 (TU11) or 3 E1 (TU12) links. As a result, each link can be allocated a three-figure address in the form #K, #L, #M where:

• K represents the payload number (1 to 3)

• L represents the TUG2 number (1 to 7)

• M represents the TU11/12 number (1-4 or 1-3). ITU-T Rec. G.707 stipulates a link-numbering schematic based on these K, L & M coordinates. The Link Numbering information represented by K, L, & M can be viewed from the Link Status menu (see Expose (Link Status) on page 4-11).

The DSTM-1 module has three AUG mode settings which effect link numbering: AU3 (VC3- G.707), AU4 (VC3-G.707), and AU4-VC3 Seq.

AU3 & AU4 (VC3-G.707)

The ITU Rec. G.707 specification for VC-3 is being followed for both AU3 & AU4 modes. The links are numbered 1 through 84 and are taken in sets of 28 from each payload. The links from Payload #1 are numbered 1 through 28; those from Payload #2 are numbered 29 through 56, and those of Payload #3 are numbered 57 through 84. Invalid link numbers are skipped. For example, if Payload 1 is of type E1, then the E1 links are numbered 1 thru 21 and links 22 thru 27 are skipped. The links in Payload 2 always start from link 28.

This is compliant with the ITU G.707 specification which proposes that links are to be lined up in increasing order of L coordinate first and then M, and then K. For example, with E1 links configured, the order would be:

1, 1, 1 1, 2, 1 1, 3, 1 1, 4, 1 1, 5, 1 1, 6, 1 1, 7, 1 & 1, 1, 2....



The VC3-G707 Link Numbering Scheme is shown in Table 3-4.

Table 3-4. VC3-G.707 Link Numbering Scheme

E1 Link Number

T1 Link Number

K (Payload)

L (TUG2)

M (TU11/12)

1 1 Payload-1:Link-1 1 1 1









10 10 Payload-1:Link-10 1 3 2

11 11 Payload-1:Link-11 1 4 2

12 12 Payload-1:Link-12 1 5 2

13 13 Payload-1:Link-13 1 6 2

14 14 Payload-1:Link-14 1 7 2

15 15 Payload-1:Link-15 1 1 3

16 16 Payload-1:Link-16 1 2 3

17 17 Payload-1:Link-17 1 3 3

18 18 Payload-1:Link-18 1 4 3

19 19 Payload-1:Link-19 1 5 3

20 20 Payload-1:Link-20 1 6 3

21 21 Payload-1:Link-21 1 7 3

X 22 Payload-1:Link-22 (T1 only) 1 1 4







29 29 Payload-2:Link-1 2 1 4

30 30 Payload-2:Link-2 2 2 1

31 31 Payload-2:Link-3 2 3 1



Table 3-4. VC3-G.707 Link Numbering Scheme (Cont.)

E1 Link Number

T1 Link Number

K (Payload)

L (TUG2)

M (TU11/12)

32 32 Payload-2:Link-4 2 4 1

33 33 Payload-2:Link-5 2 5 1

34 34 Payload-2:Link-6 2 6 1

35 35 Payload-2:Link-7 2 7 1

36 36 Payload-2:Link-8 2 1 1

37 37 Payload-2:Link-9 2 2 2

38 38 Payload-2:Link-10 2 3 2

39 39 Payload-2:Link-11 2 4 2

40 40 Payload-2:Link-12 2 5 2

41 41 Payload-2:Link-13 2 6 2

42 42 Payload-2:Link-14 2 7 2

43 43 Payload-2:Link-15 2 1 2

44 44 Payload-2:Link-16 2 2 3

45 45 Payload-2:Link-17 2 3 3

46 46 Payload-2:Link-18 2 4 3

47 47 Payload-2:Link-19 2 5 3

48 48 Payload-2:Link-20 2 6 3

49 49 Payload-2:Link-21 2 7 3








57 57 Payload-3:Link-1 3 1 1

58 58 Payload-3:Link-2 3 2 1

59 59 Payload-3:Link-3 3 3 1

60 60 Payload-3:Link-4 3 4 1

61 61 Payload-3:Link-5 3 5 1

62 62 Payload-3:Link-6 3 6 1

63 63 Payload-3:Link-7 3 7 1



Table 3-4. VC3-G.707 Link Numbering Scheme (Cont.)

E1 Link Number

T1 Link Number

K (Payload)

L (TUG2)

M (TU11/12)

64 64 Payload-3:Link-8 3 1 2

65 65 Payload-3:Link-9 3 2 2

66 66 Payload-3:Link-10 3 3 2

67 67 Payload-3:Link-11 3 4 2

68 68 Payload-3:Link-12 3 5 2

69 69 Payload-3:Link-13 3 6 2

70 70 Payload-3:Link-14 3 7 2

71 71 Payload-3:Link-15 3 1 3

72 72 Payload-3:Link-16 3 2 3

73 73 Payload-3:Link-17 3 3 3

74 74 Payload-3:Link-18 3 4 3

75 75 Payload-3:Link-19 3 5 3

76 76 Payload-3:Link-20 3 6 3

77 77 Payload-3:Link-21 3 7 3








AU4-VC3 Sequential

For the AU4-VC3-Sequential link numbering scheme, the E1 link numbers will not be skipped as they are in the VC3-G707 Link Numbering scheme. For example, with E1 links configured, the order would be: 1,1,1 1,1,2 1,1,3 1,1,4 etc.

Payload-2 E1 links would start from where Payload-1 links ended, i.e., link-22.

The VC3-Sequential scheme does not allow mixed T1 and E1 payloads. Additionally, T1 Sequential is not currently available, but is scheduled for a future release.

The VC3 sequential numbering scheme is shown in Table 3-5.

Note



Table 3-5. AU4-VC3-Sequential Scheme

E1 Link Number

T1 Link Number K

(Payload) L (TUG2) M

(TU11/12)










8 10 Payload-1:Link-10 1 3 2

9 11 Payload-1:Link-17 1 3 3


10 13 Payload-1:Link-4 1 4 1

11 14 Payload-1:Link-11 1 4 2

12 15 Payload-1:Link-18 1 4 3


13 17 Payload-1:Link-5 1 5 1

14 18 Payload-1:Link-12 1 5 2

15 19 Payload-1:Link-19 1 5 3


16 21 Payload-1:Link-6 1 6 1

17 22 Payload-1:Link-13 1 6 2

18 23 Payload-1:Link-20 1 6 3


19 25 Payload-1:Link-7 1 7 1

20 26 Payload-1:Link-14 1 7 2

21 27 Payload-1:Link-21 1 7 3


22 29 Payload-2:Link-1 2 1 1

23 30 Payload-2:Link-8 2 1 2

24 31 Payload-2:Link-15 2 1 3




Table 3-5. AU4-VC3-Sequential Scheme (Cont.)

E1 Link Number

T1 Link Number K


(TU11/12)

25 33 Payload-2:Link-2 2 2 1

26 34 Payload-2:Link-9 2 2 2

27 35 Payload-2:Link-16 2 2 3


28 37 Payload-2:Link-3 2 3 1

29 38 Payload-2:Link-10 2 3 2

30 39 Payload-2:Link-17 2 3 3


31 41 Payload-2:Link-4 2 4 1

32 42 Payload-2:Link-11 2 4 2

33 43 Payload-2:Link-18 2 4 3


34 45 Payload-2:Link-5 2 5 1

35 46 Payload-2:Link-12 2 5 2

36 47 Payload-2:Link-19 2 5 3


37 49 Payload-2:Link-6 2 6 1

38 50 Payload-2:Link-13 2 6 2

39 51 Payload-2:Link-20 2 6 3


40 53 Payload-2:Link-7 2 7 1

41 54 Payload-2:Link-14 2 7 2

42 55 Payload-2:Link-21 2 7 3


43 57 Payload-3:Link-1 3 1 1

44 58 Payload-3:Link-8 3 1 2

45 59 Payload-3:Link-15 3 1 3


46 61 Payload-3:Link-2 3 2 1

47 62 Payload-3:Link-9 3 2 2

48 63 Payload-3:Link-16 3 2 3




Table 3-5. AU4-VC3-Sequential Scheme (Cont.)

E1 Link Number

T1 Link Number K


(TU11/12)

49 65 Payload-3:Link-3 3 3 1

50 66 Payload-3:Link-10 3 3 2

51 67 Payload-3:Link-17 3 3 3


52 69 Payload-3:Link-4 3 4 1

53 70 Payload-3:Link-11 3 4 2

54 71 Payload-3:Link-18 3 4 3

X 72 Payload-3:Link-25(T1 only) 3 4 4

55 73 Payload-3:Link-5 3 5 1

56 74 Payload-3:Link-12 3 5 2

57 75 Payload-3:Link-19 3 5 3

X 76 Payload-3:Link-26(T1 only) 3 5 4

58 77 Payload-3:Link-6 3 6 1

59 78 Payload-3:Link-13 3 6 2

60 79 Payload-3:Link-20 3 6 3


61 81 Payload-3:Link-7 3 7 1

62 82 Payload-3:Link-14 3 7 2

63 83 Payload-3:Link-21 3 7 3




Link Numbering Comparison

Table 3-6 and Table 3-7 provide a comparison of Standard vs Sequential link numbering.

T1 Sequential is not currently available, but is scheduled for a future release.

Table 3-6. STM-1 Standard/Sequential Numbering Schemes - Comparison (E1 Links)

E1 Payloads

Standard Sequential Standard Sequential Standard Sequential Link

K L M K L M Link

K L M K L M Link

K L M K L M

1 1 1 1 1 1 1 29 2 1 1 2 3 2 57 3 1 1 3 5 3

2 1 2 1 1 1 2 30 2 2 1 2 3 3 58 3 2 1 3 6 1

3 1 3 1 1 1 3 31 2 3 1 2 4 1 59 3 3 1 3 6 2

4 1 4 1 1 2 1 32 2 4 1 2 4 2 60 3 4 1 3 6 3

5 1 5 1 1 2 2 33 2 5 1 2 4 3 61 3 5 1 3 7 1

6 1 6 1 1 2 3 34 2 6 1 2 5 1 62 3 6 1 3 7 2

7 1 7 1 1 3 1 35 2 7 1 2 5 2 63 3 7 1 3 7 3

8 1 1 2 1 3 2 36 2 1 2 2 5 3 64 3 1 2 X X X

9 1 2 2 1 3 3 37 2 2 2 2 6 1 65 3 2 2 X X X

10 1 3 2 1 4 1 38 2 3 2 2 6 2 66 3 3 2 X X X

11 1 4 2 1 4 2 39 2 4 2 2 6 3 67 3 4 2 X X X

12 1 5 2 1 4 3 40 2 5 2 2 7 1 68 3 5 2 X X X

13 1 6 2 1 5 1 41 2 6 2 2 7 2 69 3 6 2 X X X

14 1 7 2 1 5 2 42 2 7 2 2 7 3 70 3 7 2 X X X

15 1 1 3 1 5 3 43 2 1 3 3 1 1 71 3 1 3 X X X

16 1 2 3 1 6 1 44 2 2 3 3 1 2 72 3 2 3 X X X

17 1 3 3 1 6 2 45 2 3 3 3 1 3 73 3 3 3 X X X

18 1 4 3 1 6 3 46 2 4 3 3 2 1 74 3 4 3 X X X

19 1 5 3 1 7 1 47 2 5 3 3 2 2 75 3 5 3 X X X

20 1 6 3 1 7 2 48 2 6 3 3 2 3 76 3 6 3 X X X

21 1 7 3 1 7 3 49 2 7 3 3 3 1 77 3 7 3 X X X

22 X X X 2 1 1 50 X X X 3 3 2 78 X X X X X X

23 X X X 2 1 2 51 X X X 3 3 3 79 X X X X X X

24 X X X 2 1 3 52 X X X 3 4 1 80 X X X X X X

25 X X X 2 2 1 53 X X X 3 4 2 81 X X X X X X

26 X X X 2 2 2 54 X X X 3 4 3 82 X X X X X X

27 X X X 2 2 3 55 X X X 3 5 1 83 X X X X X X

28 X X X 2 3 1 56 X X X 3 5 2 84 X X X X X X

Note



Table 3-7. DSTM-1 Standard/Sequential Numbering Schemes - Comparison (T1 Links)

T1 Payloads

Standard Sequential Standard Sequential Standard Sequential Link

K L M K L M Link

K L M K L M Link

K L M K L M

1 1 1 1 1 1 1 29 2 1 1 2 1 1 57 3 1 1 3 1 1

2 1 2 1 1 1 2 30 2 2 1 2 1 2 58 3 2 1 3 1 2

3 1 3 1 1 1 3 31 2 3 1 2 1 3 59 3 3 1 3 1 3

4 1 4 1 1 1 4 32 2 4 1 2 1 4 60 3 4 1 3 1 4

5 1 5 1 1 2 1 33 2 5 1 2 2 1 61 3 5 1 3 2 1

6 1 6 1 1 2 2 34 2 6 1 2 2 2 62 3 6 1 3 2 2

7 1 7 1 1 2 3 35 2 7 1 2 2 3 63 3 7 1 3 2 3

8 1 1 2 1 2 4 36 2 1 2 2 2 4 64 3 1 2 3 2 4

9 1 2 2 1 3 1 37 2 2 2 2 3 1 65 3 2 2 3 3 1

10 1 3 2 1 3 2 38 2 3 2 2 3 2 66 3 3 2 3 3 2

11 1 4 2 1 3 3 39 2 4 2 2 3 3 67 3 4 2 3 3 3

12 1 5 2 1 3 4 40 2 5 2 2 3 4 68 3 5 2 3 3 4

13 1 6 2 1 4 1 41 2 6 2 2 4 1 69 3 6 2 3 4 1

14 1 7 2 1 4 2 42 2 7 2 2 4 2 70 3 7 2 3 4 2

15 1 1 3 1 4 3 43 2 1 3 3 4 3 71 3 1 3 3 4 3

16 1 2 3 1 4 4 44 2 2 3 3 4 4 72 3 2 3 3 4 4

17 1 3 3 1 5 1 45 2 3 3 3 5 1 73 3 3 3 3 5 1

18 1 4 3 1 5 2 46 2 4 3 3 5 2 74 3 4 3 3 5 2

19 1 5 3 1 5 3 47 2 5 3 3 5 3 75 3 5 3 3 5 3

20 1 6 3 1 5 4 48 2 6 3 3 5 4 76 3 6 3 3 5 4

21 1 7 3 1 6 1 49 2 7 3 3 6 1 77 3 7 3 3 6 1

22 1 1 4 2 6 2 50 2 1 4 3 6 2 78 3 1 4 3 6 2

23 1 2 4 2 6 3 51 2 2 4 3 6 3 79 3 2 4 3 6 3

24 1 3 4 2 6 4 52 2 3 4 3 6 4 80 3 3 4 3 6 4

25 1 4 4 2 7 1 53 2 4 4 3 7 1 81 3 4 4 3 7 1

26 1 5 4 2 7 2 54 2 5 4 3 7 2 82 3 5 4 3 7 2

27 1 6 4 2 7 3 55 2 6 4 3 7 3 83 3 6 4 3 7 3

28 1 7 4 2 7 4 56 2 7 4 3 7 4 84 3 7 4 3 7 4

Configure an Individual T1/E1 Link

This section will guide you through configuring an individual T1/E1 link for a DSTM-1 module.

1. Use the appropriate method from the Navigation Box below to access the Payload Link Configuration Menu.



Navigation:

Standalone DXC-100

Main Menu



↓


[P]ort/Link Cfg


OR DXC-100 Stack

Main Menu


↓ Nests Profile

↓ Select Nest with DSTM-1 Module

↓ [S]lot Conf.

↓ Select Slot with DSTM-1 Module

↓ [P]ort/Link Configuring


2. To change parameters for an individual link, move the cursor to the link to be changed and press <Enter>. The following menu appears:

Link Configuration ------------------

Link Number.....: 1 Name............: Link 01 Status..........: In Service Recover Time....: 3 seconds Clear T1........: Disabled Framing.........: T1 ESF Unused TimeSlots: Idle ESF FDL Format..: 54016

Figure 3-14. Link Configuration Menu (T1 Example)




Link Number.....: 29 Name............: Link 29 Status..........: In Service Clear E1........: Disabled Framing.........: E1 E1 National Bits: Sa4.............: 1 Sa5.............: 1 Sa6.............: 1 Sa7.............: 1 Sa8.............: 1

Figure 3-15. Link Configuration Menu (E1 Example)

Use the field descriptions in Table 3-8 as an aid in configuring the links. Once changes are made to the appropriate fields, do the following:

1. Press X to save changes. When prompted: “Update Configuration? Are you sure (Y/N)?” Press Y. You are then returned to the T1/E1 Links Configuration Menu.

2. To configure another link, or when all links are configured, press X to return to the Configuration Menu.

Table 3-8. Link Configuration Menu Field Descriptions

Field Description

Link Number: (display field) Displays the Link Number (1-28) of the link that you are configuring.

Name: (text field) This is a user-defined field. Any name up to 20 alphanumeric characters can be entered to identify each link on the DSTM-1 module. You may find it beneficial to use circuit numbers to name the links.

Status: (option field) Select the state of the link. You can put the link In Service or Out of Service.

• In Service - The link is active.

• Out of Service - The link is not in use. The Out of Service mode suppresses false alarms that would otherwise be generated by the absence of a received signal. Also, all receive and transmit path time slots in the link are set from Busy to Idle.

Recover Time: (T1 option field) Used to specify how quickly Red/Yellow alarms are cleared following the recovery of the given T1 facility (e.g., valid signal and framing present). Select either 3, 10, or 15 seconds.

Note: The Recover Time option field is available only with T1 line types.



Table 3-8. Link Configuration Menu Field Descriptions (Cont.)

Field Description

Clear T1 or Clear E1: (option field)

(The Payload Configuration Menu defines whether T1 or E1 framing is referenced in this menu.)

“Clear” refers to a condition where the module passes data through without reformatting it in any way (essentially, the module acts the same as a wire). The following selections are available: • Disabled - Framing is terminated and regenerated. Turns off Clear

mode (uses standard framing pattern and detects all alarms/errors). All diagnostic functions are available.

• Framed - Framing is conveyed through the switch fabric. Allows alarms and statistics to be displayed.

• Unframed - Full bandwidth of the frame is used for data. Passes data without keeping track of alarms and statistics. Limited diagnostics functions are available.

Framing: (option field) Selects the per-link T1 or E1 framing. T1 and E1 framing cannot be co-mingled in the same payload. The following selections are available:

T1 Framing: T1 D4, T1 ESF, and T1 Unframed.

E1 Framing: E1, E1-CRC, E1-CAS, E1-CAS-CRC and E1 Unframed.

Note: When Clear T1/E1 is set to Unframed, the only available line type will only be T1 Unframed or E1 Unframed.

Unused TimeSlots: (T1 option field)

Used to select the state of unused timeslots as either Busy (All Ones) or Idle (0). Selectable only in Clear T1/E1 Disabled mode.

Idle: All eight (8) bits in the assigned link timeslots are set to all ones during a Link Red Alarm/Loss of Frame condition.

Busy: The hex value FE (11111110) is set to all assigned link timeslots during a Link Red Alarm/Loss of Frame condition.

Note: The Unused Timeslots field is available only with T1 line types.

E1 National Bits: (E1 option fields)

These are bits reserved for international use. They may be recommended for use in specific point-to-point applications. Bit Sa4 may be used as a message-based data link. Bits Sa5 to Sa7 are for national usage where there is no demand for them in specific point-to-point applications. Bits Sa4 through Sa8 may also be used in a synchronization interface to convey synchronization status messages.

Note: When Bits Sa4 to Sa8 are not used, they should be set to 1 on links crossing an international border.

This single byte field can be changed to set the values of the E1 NFA byte in odd frames as depicted below: sa8 sa7 sa6 sa5 sa4 reserved bits --- --- --- --- --- ------------- 1 1 1 1 1 0 0 0 = F8 (default)

Note: The E1 National Bits fields are available only with E1 line types.

ESF FDL Format: (T1 option field)

Describes the types of ESF network commands to which the DSTM-1 module responds. It has no meaning for D4 networks. With ESF networks, this information must be obtained from the network supplier. Choose between 54016 (AT&T Technical Reference 54016) and T1.403 (ANSI specification T1.403). Selectable only in Clear T1/E1 Disabled mode.

Note: The ESF FDL Format field is available only with T1 line types.



Copy Configuration to All Links

1. Use the appropriate method from the Navigation Box below to access the Link

Configuration Menu.

Navigation:

DXC-100 Stack

Main Menu

↓


Nests Profile

↓

Select Nest with DSTM-1 Module ↓ [S]lot Conf.

↓


[P]ort/Link Cfg

↓

Payload-(1, 2, or 3) Configuration

OR Standalone DXC-100

Main Menu

↓


Slot Configuration

↓


[P]ort/Link Cfg

↓


2. Move your cursor to the link that you wish to copy the configuration from, and press C. The following prompt appears:

Slot #6 Payload-2 Link Configuration ---------------------------- Link Link Clear Number Name E1 Framing ------ 29 ************************************************************* 30 * * 31 * -MESSAGE!- * 32 * * 33 * * 34 * Copy configuration of link#29 to all links in Payload#2? * 35 * * 36 * * 37 * Are you sure (Y/N)? * 38 * * 39 ************************************************************* 40 41 Link 41 Out of Service 42 Link 42 Out of Service [N]ext page [C]opy cfg to all

Figure 3-16. Copy Link Configuration Prompt

3. Press Y. The configuration is copied to all other links in the payload.

Using the copy configuration ([C]opy cfg to all) feature will sometimes prompt a

message that says “Connections for all effected ports will be deleted”, which is based on line type changes (e.g., going from T1 to E1 or vice versa).

Note



Automatic Protection Switching (APS) Configuration 1+1 Automatic Protection Switching (APS) capability is provided for the DSTM-1 module. APS provides an automatic switchover from a working (online) module to a protection (backup) module in the event of a module or optical link failure. Switchover will occur in the event of a fault that surpasses user-configurable thresholds. These thresholds and switching criteria can be configured via the APS Configuration Menu.

If two module sets are installed as an APS redundancy pair, the primary module must be located in an even slot, and the secondary (protection) module must be located in the next-higher adjacent odd slot. Slot one cannot be used for a DSTM-1 module.

1. Use the appropriate method from the Navigation Box below to access the APS Configuration Menu.

Navigation:

Standalone DXC-100

Main Menu

↓


Slot Configuration

↓


[P]ort/Link Cfg

↓

APS Configuration

OR DXC-100 Stack

Main Menu

↓


Nests Profile

↓


[S]lot Conf. ↓


[P]ort/Link Cfg

↓

APS Configuration

Note



APS Configuration -----------------

SF Threshold. : 1.0E-03 SD Threshold. : 1.0E-05 Switch on RDI : Enable

Figure 3-17. APS Configuration Menu

2. Move the cursor to the field that you want to configure and press <Enter>. Refer to the field descriptions in Table 3-9 to assist you in configuring APS.

3. Once the fields have been configured, press X to save the changes. When prompted: “Update Configuration? Are you sure (Y/N)?”, press Y. You are returned to the Configuration Menu.

Table 3-9. APS Configuration Menu Field Descriptions

Field Description

SF Threshold: (option field) Signal Failure (SF) is a “hard failure” condition detected on the incoming DSTM-1 signal. Loss of Signal, Loss of Frame, and AIS defects and a line Bit Error Rate exceeding 10-3 on the incoming DSTM-1 signal are detected as SF conditions on the line. This field is used to set the SF threshold as one of the following (scientific notation): 1.0E-03, 1.0E-04, or 1.0E-05.

SD Threshold: (option field) Signal Degrade (SD) is a less severe “soft failure” condition resulting from the line Bit Error Rate exceeding a pre-selected threshold.

This field is used to set the SD threshold as one of the following (scientific notation): 1.0E-05, 1.0E-06, 1.0E-07, 1.0E-08, or 1.0E-09.

Switch on RDI: (option field) If the DSTM-1 module receives an MS-RDI signal from the remote end, there will be a switchover to a standby state (unless disabled).


3-30 Accessing the DSTM-1 Main Menu

3.3 Accessing the DSTM-1 Main Menu

The DSTM-1 Main Menu allows you to configure the module, run diagnostic tests, access utilities, configure and view APS Redundancy status, and display module identification (software and hardware revision levels). These procedures are detailed on the next several pages.

The procedure for accessing the Main Menu for a particular module set will be different for the DXC-100 standalone and stack configurations. The Navigation Box below shows the two different methods used to get to the Nest Summary Menu, from which the module’s Main Menu and all subordinate menus can be accessed.

1. Use the appropriate method from the Navigation Box below to access the Nest Summary Menu.

Navigation:

Standalone DXC-100

Main Menu

↓

Nest Summary

OR DXC-100 Stack

Main Menu

↓

Node Summary ↓

Nests Profile

↓

Nest with DSTM-1 Module ↓

Nest Summary

On the Nest Summary Menu, the Configured Type must display “DSTM-1” and the Device State must display “Online” or “Standby” in order to access the DSTM-1 Main Menu. If the Device State is “Offline”, an alert message is generated.

Note

Note


Accessing the DSTM-1 Main Menu 3-31

Databases: InSync N+1 Redundancy State: Disabled Alarm Contacts..: Enabled Alarm Contact Type..: Standard

Nest #1 Slot Summary Menu N+1 Slot# Group Configured Type Device State Alarm ----- ----- --------------- ------------ ----- 01 Octal T1-E1 Online *Major 02 OC3 Online *Major 03 OC3 Not Present Critical 04 STM1 Online *Major 05 Router Online None 06 STS-1 Online *None 07 STS-1 Online *Major 08 STS-1 Online *Major 09 Hybrid DS-3 Online *Major 10 Hybrid DS-3 Online *None 11 Hybrid DS-3 Online *None SMCA System Manager A Online None SMCB System Manager B Standby None PSX ProtectionSwitch Not Present None [C]lear error counts [T]oggle Alarm Contacts N+1 Device Redundancy: Switch[O]ver [R]estore [E]xpose

Figure 3-18. Nest Summary Menu

2. Then place your cursor on the slot number where the DSTM-1 module is located and press <Enter>. The DSTM-1 Main Menu appears.

Main Menu ---------

View Configuration Diagnostics Utilities 1+1 Redundancy XLINK Control/Status About

Figure 3-19. DSTM-1 Main Menu

Table 3-10 explains the options available from the DSTM-1 Main Menu.



Table 3-10. DSTM-1 Main Menu Option Table

Option Description

View Configuration This option opens the View Configuration Menu, which allows you to view the DSTM-1 configuration.

Diagnostics This option opens the Diagnostics Menu, which allows access to several embedded diagnostic facilities, including loopbacks and built-in BERT.

Utilities This option opens the Utilities Menu, from which you can access command utilities, reset the DSTM-1 module, change the DSTM-1 module’s status, or access the Links Mapping Table.

1+1 Redundancy This option opens the 1+1 Redundancy Menu, which allows you to view APS Status, force APS switchovers, and set other APS Redundancy Controls.

XLINK Control/Status (DSTM-1X Only)

The X-Link Control menus allows you to configure X-Link parameters as well as perform limited X-Link testing.

About This option brings up the About Display, which provides version information for various DSTM-1 module elements.

View Configuration Menu The View Configuration Menu provides access to submenus from which the Virtual Tributary and T1/E1 link configuration can be viewed. To actually configure the DSTM-1 module, refer back to the DSTM-1 Module Configuration section.

Navigation:

DSTM-1 Main Menu ↓

View Configuration

Configuration Menu ------------------

AUG Configuration Payload-1 Configuration Payload-2 Configuration Payload-3 Configuration APS Configuration

Figure 3-20. DSTM-1 Module View Configuration Menu



The DSTM-1 module view configuration menu allows access to read-only screens where you can view the DSTM-1 module configuration. If you want to actually configure the DSTM-1 Port, T1/E1 Payloads or APS, then you must access the Configuration screens via the Slot Configuration Menu. Table 3-11 explains the options available from the DSTM-1 View Configuration Menu.

Table 3-11. DSTM-1 Module View Configuration Menu Options

Option Description

AUG Configuration Allows you to view the DSTM-1 Port Administrative Unit (AU3, AU4, or AU4-VC3 Seq.), Optical Line Timing (Local or Loop), and Link Type (T1 or E1) Configuration.

Payload-1 Configuration Allows you to view the configuration of the T1/E1 links that are part of Payload-1.



APS Configuration Allows you to view the configuration of the APS.

View AUG Configuration Navigation:


View Configuration ↓

AUG Configuration

AUG Configuration -------------------

Mode...............: AU3 Line Timing........: Local TS Alloc...........: Normal Group Type ------------------- Payload-1...: E1(VC-12) Payload-2...: E1(VC-12) Payload-3...: E1(VC-12)

Figure 3-21. View AUG Configuration Display (DSTM-1 in DXC-100)



AUG Configuration -------------------

Mode.....................: AU3 Line Timing..............: Local Assigned to Nest.........: 4 Group Type ------------------- Payload-1...: T1(VC-11) Payload-2...: E1(VC-12) Payload-3...: E1(VC-12)

Figure 3-22. View AUG Configuration Display (DSTM-1X in DXC-100)

From here, you can view the type of Administrative Units, Optical Line Timing, and Payloads that have been configured. Refer to Table 3-2 for an explanation of most of the fields in this menu. The field descriptions are identical to the DSTM-1 Configuration Menu, except that they are read-only for this screen. An exception to this is the addition of the TS Alloc field (DSTM-1 installed in a DXC-100), which displays the Timeslot Allocation Type that was set via the Slot Configuration Menu. See the note on page 3-4 for details on this setting.



View Payload Configuration

Navigation:




Slot #4 Payload-1 Link Configuration ---------------------------- Link Link Clear Unused Number Name T1 Framing FDL TSs ------ ------- ----- ------- --- ------ 01 Link 01 Disabled T1 ESF 54016 Idle 02 Link 02 Disabled T1 ESF T1.403 Idle 03 Link 03 Disabled T1 D4 N/A Idle 04 Link 04 Framed T1 ESF T1.403 Idle 05 Link 05 Framed T1 D4 N/A Idle 06 Link 06 T1 Unframed N/A N/A N/A 07 Link 07 Disabled T1 ESF T1.403 Idle 08 Link 08 Disabled T1 ESF T1.403 Idle 09 Link 09 Disabled T1 ESF T1.403 Idle 10 Link 10 Disabled T1 ESF T1.403 Idle 11 Link 11 Disabled T1 ESF T1.403 Idle 12 Link 12 Disabled T1 ESF T1.403 Idle 13 Link 13 Disabled T1 ESF T1.403 Idle 14 Link 14 Disabled T1 ESF T1.403 Idle [N]ext page [C]opy cfg to all

Figure 3-23. View Payload Configuration Display (T1 Example)

Slot #2 Payload-2 Link Configuration ---------------------------- Link Link Clear Unused Number Name E1 Framing TSs ------ ---- ----- ------- ------ 29 Link 29 Disabled E1-CAS-CRC Busy 30 Link 30 Disabled E1-CAS-CRC Busy 31 Link 31 Disabled E1-CAS-CRC Busy 32 Link 32 Disabled E1-CAS-CRC Busy 33 Link 33 Disabled E1-CAS-CRC Busy 34 Link 34 Disabled E1-CAS-CRC Busy 35 Link 35 Disabled E1-CAS-CRC Busy 36 Link 36 Disabled E1-CAS-CRC Busy 37 Link 37 Disabled E1-CAS-CRC Busy 38 Link 38 Disabled E1-CAS-CRC Busy 39 Link 39 Disabled E1-CAS-CRC Busy 40 Link 40 Disabled E1-CAS-CRC Busy 41 Link 41 Disabled E1-CAS-CRC Busy 42 Link 42 Disabled E1-CAS-CRC Busy [N]ext page

Figure 3-24. View Payload Configuration Display (E1 Example)



From here, you can view up to 14 links at a time. Press N to view the next 14 links.

View Individual T1/E1 Link Configuration

Navigation:

DSTM-1 Main Menu

↓


Payload-(1, 2, or 3) Configuration ↓

Select a T1/E1 Link


Link Number.....: 1 Name............: Link 01 Status..........: In Service Recover Time....: 3 seconds Clear T1........: Disabled Framing.........: T1 ESF Unused TimeSlots: Idle ESF FDL Format..: 54016

Figure 3-25. View Individual T1/E1 Link Configuration Display (T1 Example)




Link Number.....: 29 Name............: Link 29 Status..........: In Service Clear E1........: Disabled Framing.........: E1 E1 National Bits: Sa4.............: 1 Sa5.............: 1 Sa6.............: 1 Sa7.............: 1 Sa8.............: 1

Figure 3-26. View Individual T1/E1 Link Configuration Display (E1 Example)

From here, you can view the configuration of one link at a time.

Refer to Table 3-8 for an explanation of the fields in this menu. The field descriptions are identical except that they are read-only for this screen.



View APS Configuration

Navigation:

DSTM-1 Main Menu

↓


APS Configuration

APS Configuration ------------------

SF Threshold. : 1.0E-03 SD Threshold. : 1.0E-05 Switch on RDI : Enable

Figure 3-27. APS Thresholds Configuration Menu

From here, you can view the APS Threshold settings. Refer to Table 3-9 for an explanation of the fields in this menu. The field descriptions are identical except that they are read-only for this screen.

Diagnostics Menu 4-1

Chapter 4 Alarms & Diagnostics

4.1 Diagnostics Menu

The diagnostics menu provides access to several embedded diagnostic facilities, including loopbacks and built-in BERT. There are multiple loopback options. Each of the links can be independently looped back. The STM-1 line can also be looped back. Loopbacks can occur towards the line or towards the backplane.

The built-in BERT generator and testers can be used along with loopbacks to test and determine the status of the DSTM-1 module. They may also be used in conjunction with diagnostic facilities on other DXC-100 cards to qualify operation of backplane connections. Statistics displays are also provided for monitoring and diagnostic purposes.

Navigation:


Diagnostics

Diagnostics Menu ----------------

Payload-1 Line Diagnostics Center Payload-2 Line Diagnostics Center Payload-3 Line Diagnostics Center Transport Diagnostics Center PCM Signaling Display

Figure 4-1. Diagnostics Menu

Chapter 4 Alarms & Diagnostics DSTM-1 Installation and Operation Manual

4-2 Diagnostics Menu

The options available from the Diagnostics Menu are described in Table 4-1.

Table 4-1. DSTM-1 Diagnostics Menu Option Table

Option Description

Payload-1 Line Diagnostics Center

Opens the Payload-1 Diagnostics Manager Menu, where the status of Payload-1’s links are displayed, and from which several submenus may accessed to perform additional diagnostic actions such as loopbacks, BERT, error insertion, and viewing additional statistics.





Transport Diagnostics Center Opens the Transport Status Display, from which you can view line status, laser state, and loopback status.

PCM Signaling Display Opens the PCM Signaling Display Menu, which allows you to monitor the payload signaling states and transceiver control signals on a per-link basis.

DSTM-1 Installation and Operation Manual Chapter 4 Alarms & Diagnostics


Payload Line Diagnostics Center (Diagnostics Manager Menu) The Payload Line Diagnostics Center (Diagnostics Manager Menu) is used to set up diagnostics for the DSTM-1 module.

Navigation:

DSTM-1 Main Menu

↓

Diagnostics ↓

Payload-(1, 2, or 3) Line Diagnostics Center

Payload-1 Diagnostics Manager ------------------------------

T1 T1 TU TU Loop BERT BERT BERT Link Name State ErrSecs State ErrSecs back State Duration ErrSecs -----------+-------------+-------------+-------------+---------------------- Link 01 OK 0 OK 0 Off Off 0 0 Link 02 RED 6 OK 0 Off Off 0 0 Link 03 OK 0 OK 0 Off Off 0 0 Link 04 OK 0 OK 0 Off Off 0 0 Link 05 OK 0 OK 0 Off Off 0 0 Link 06 OK 0 OK 0 Off Off 0 0 Link 07 OK 0 OK 0 Off Off 0 0 -----------+-------------+-------------+-------------+---------------------- Mapper OK 0 NA NA Off Off 0 0 -----------+-------------+-------------+-------------+---------------------- Payload[1] Diagnostics Payload[2] Diagnostics Payload[3] Diagnostics [B]ERT [L]oopback [N]ext Page [G].826 ESF [S]tatistics 15-min Performance [R]egisters [E]xpose [I]nService(Toggle View) [C]lear Counters(all Payloads) [F]ilter Errored Links(all Payloads)

Figure 4-2. Payload-1 Diagnostics Manager Menu

From this menu, a submenu may be viewed or invoked to perform additional diagnostic actions such as loopbacks, BERT, and viewing additional statistics.

To view an additional 7 links (up to 28 total), press N. To view links in a different payload, press 1, 2, or 3 as appropriate.

To clear counters for the mapper and all links in all payloads (including those not shown on the current screen), press C.

The information contained in each field on this screen is detailed in Table 4-2.



Table 4-2. Payload Diagnostics Manager Field Descriptions

Field Description

LINK FIELDS

Link Name: (display field) This field displays the user-defined name for the link.

T1 or E1 State: (display field)

This field displays the T1 or E1 link’s current status as one of the following:

• AIS - Alarm Indication Signal all ones pattern declared when fewer than 4 zeroes received in 3ms period.

• M-ERR - Multiple Errors: More than one type of error has been detected.

• OK - Link is In Service and functioning properly

• OOF - Out of Frame: For T1, Frame alignment error reported if 2 out of 4 framing bits received incorrectly. For E1, Frame alignment error reported if 3 consecutive Frame Alignment Signal (FAS) words received incorrectly and/or 915 CRC errors received (if CRC enabled).

• OOS - Link is Out of Service.

• RED - Red Alarm: Carrier Fault Alarm (CFA) declared due to receive signal/framing fault.

• RSLP - Receive Slip: Controlled slip detected on incoming path.

• SEF - (T1 Only) Severely Errored Frame is reported when receive signal does not meet requirements of ANSI T1.231.

• TSLP - Transmit Slip: Controlled slip detected on outgoing path.

• YEL - Yellow Alarm: For T1, indicates Remote Alarm Indication received (D4/SF via bit 2 suppression or ESF via priority code word). For E1, indicates Remote alarm indication received (via TS-0 overhead).

T1 or E1 ErrSecs (Errored Seconds): (display field)

Displays the number of errored seconds that have occurred on the T1 or E1 link since the last time that the counter was reset. The occurrence of a Loss of Frame or a CRC-6/CRC-4 error in a one-second period is known as an errored second.

TU State: (display field) This field displays the Tributary Unit line status as one of the following:

• AIS - Indicates that an Alarm Indication Signal has been received from a remote unit.

• LOP - Indicates a Loss of Pointer has been detected.


• OK - In Service and functioning properly.

• OOS - Out of Service.

• PSLU - Indicates Path Signal Label Unstable (PSLU) events have been detected in the receive data stream.

• PSLM - Indicates Path Signal Label Mismatch (PSLM) events have been detected in the receive data stream.

• RDI - Indicates Remote Defect Indication had been detected.

• RFI - Indicates Remote Failure Indication has been detected.

TU ErrSecs (Errored Seconds): (display field)

Displays the number of errored seconds that have occurred on the Tributary Unit since the last time that the counter was reset. The occurrence of a Loss of Frame or a CRC-6 error in a one-second period is known as an errored second.

Loopback: (display field) Displays the type of diagnostic loop that has been enabled, or displays Off if no loop has been enabled.



Table 4-2. Payload Diagnostics Manager Field Descriptions (Cont.)

Field Description

BERT FIELDS

BERT State: (display field) Displays the type of BERT that is currently running. If BERT is not enabled, then Off is indicated. See the section on BERT for a list of the possible displayed states.

BERT Duration: (display field)

Displays the amount of time (in seconds) that BERT has been enabled.

BERT ErrSecs: (display field)

Displays the number of errored seconds that have occurred since BERT was enabled.

STM-0 MAPPER FIELD

Mapper: (display field) This field displays the STM-0 Mapper’s current status as one of the following:

• AIS - An Alarm Indication Signal for the path is declared when an all ones pattern is observed for three consecutive frames of the SDH data stream.

• LOP - Loss of Pointer is declared when invalid pointers are received in eight consecutive frames, or if eight consecutive enabled NDFs are detected in the data stream.


• OK - In Service and functioning properly.

• OOS - Out of Service.


Diagnostic Test Options The following are diagnostic tests and status displays that can be enabled on the module, links and Mapper from the Diagnostics Manager Menu. These tests can be run by placing your cursor on a numbered link or on the Mapper field and pressing a hot key (see choices below):

Table 4-3. Diagnostic Test Options

Option Description

Payload [1], [2], or [3] Diagnostics Allows direct access to a particular payload for diagnostic purposes.

[B]ERT Allows you to select several pseudo-random test patterns for testing both the T1/ E1 links and the Mapper.

[G].826 Allows you to view the G.826 Statistics Display, which provides G.826 performance statistics for a given T1 or E1 link.

[E]xpose Allows you to display the status of the link and run additional procedures such as re-initializing the T1/E1 framers and injecting known errors.

[F]ilter Errored Links (All Payloads) Allows you to view only those links that are currently in an errored state.

[L]oopback Allows you to enable several different loopbacks for both the T1/E1 links and the Mapper.



Table 4-3. Diagnostic Test Options (Cont.)

Option Description

ESF [S]tatistics Allows you to view the ESF Statistics Display, which shows current and 24-hour statistics for the specific ESF link. Framing Statistics are only available in Clear T1/ E1 Disabled mode.

[I]n Service (Toggle View) Allows you to view only those links that are currently in service.

15-min Performance [R]egisters Allows you to view the 15-minute Performance Registers Display, which gives the same information as the ESF Statistics Display but it is broken down by link for each of the ninety-six 15-minute intervals in the preceding 24-hour period. Framing Statistics are only available in Clear T1/E1 Disabled mode.

[N]ext Page Allows you to view an additional 7 links (up to 28 total).

[C]lear Error Counters Allows you to clear all errored second and BERT counters.

The procedures for running diagnostics and viewing statistics are detailed on the next several pages.

BERT (Bit Error Rate Test) BERT is used to test the bit error rate of the communication circuit. The device checks for errors by comparing a received data pattern with a known transmitted data pattern to determine transmission line quality. If a pattern match cannot be found, Errored Seconds counts are incremented to record the time during which a pattern lock in the receive path could not be established. For troubleshooting purposes, combining BERT with diagnostic loops is very useful in isolating problems within a circuit. For the DSTM-1 module, there are 10 BERT patterns available for the T1/E1 links.

T1/E1 Link BERT

Navigation:


Diagnostics ↓

Payload-(1, 2, or 3) Line Diagnostics Center ↓

Select T1/E1 Link ↓

[B]ERT



Bit Error Test (BERT) Selection --------------------------------

Link Number..: 29 Link Name....: Link 29 Current BERT.: Off New BERT.....: Off --- To System ----------------------- To Link------------- [2] Framed 2047 [B] Framed 2047 [3] Framed 2^15 [C] Framed 2^15 [4] Framed 2^20 [D] Framed 2^20 [5] Framed QRSS [E] Framed QRSS [6] Framed 2^15 inverted [F] Framed 2^15 inverted [O]ff

Figure 4-3. BERT Selection Menu

The BERT Selection Menu has a list of several test patterns that you can choose. The numbered System BERT patterns are towards the system, whereas the lettered BERT patterns are towards the line.

The link must be in service and Clear T1 or E1 must be disabled in order to perform BERT.

1. To select a BERT pattern, either place the cursor on the New BERT field and press <Enter> to cycle through the choices OR press the specific hot key indicated on the bottom of the menu. The selectable patterns and corresponding hot keys are shown in Table 4-4.

Table 4-4. BERT Selections

Option Description T1 BERT

[2] Framed 2047 towards the system [3] Framed 2^15 towards the system [4] Framed 2^20 towards the system [5] Framed QRSS towards the system) [6] Framed 2^15 inverted towards the system [B] Framed 2047 towards the line [C] Framed 2^15 towards the line [D] Framed 2^20 towards the line [E] Framed QRSS towards the line [F] Framed 2^15 inverted towards the line

Other Selections [O] Off

Note



2. Press X to start the test. The following screen appears:

Bit Error Test (BERT) Selection --------------------------------

Link Number..: 29 Li Cu ************************************ Ne * * * -MESSAGE!- * * * --- To System ------ * * [2] Framed 2047 * Start New Test? * [3] Framed 2^15 * * [4] Framed 2^20 * * [5] Framed QRSS * Are you sure (Y/N)? * [6] Framed 2^15 inver * * [O]ff ************************************

Figure 4-4. Start New Test Prompt

3. Press Y to initiate the test and return to the Payload Diagnostics Manager Menu or press N to cancel and return to the BERT Selection Menu.

Stop T1/E1 Link BERT

1. From the Payload Diagnostics Manager Menu, press B and the BERT Selection Menu appears.

2. With the cursor on the New BERT field, press the letter O.

3. Press X to stop the test.

4. When prompted: “Stop Bit Error Test? Are you sure (Y/N)?”, press Y to stop the test and return to the Payload Diagnostics Manager Menu or press N to cancel and return to the BERT Selection Menu.

5. From the BERT Selection Menu, press <Esc> twice to return to the Payload Diagnostics Manager Menu.



G.826 Statistics This status screen displays G.826 performance statistics for the selected link for the duration of time that the link was up and running.

Navigation:

DSTM-1 Main Menu

↓

Diagnostics ↓



[G].826

OR DSTM-1 Main Menu

↓

Diagnostics ↓



[E]xpose

↓ [G].826

When the link is configured for E1 (without CRC) or T1 D4 framing, the G.826 Statistics Display is not accessible.

G.826 Statistics ----------------

Link#: 29 Total Time..........................: 1725 Errored Seconds.....................: 0 Error Free Seconds..................: 1725 Severely Errored Seconds............: 0 Consecutive Severely Errored Seconds: 0 Consecutive Error Free Seconds......: 1725 Background Block Error..............: 0 Unavailable Seconds.................: 0 Errored Seconds Ratio...............: 0.00 % Severely Errored Seconds Ratio......: 0.00 % Background Block Error Ratio........: 0.00 % [C]lear Counters

Figure 4-5. G.826 Statistics Display

The G.826 Statistics Display is a read-only screen. The only action that can be accomplished here is pressing C to clear the counters. Descriptions for each field on this screen are supplied in Table 4-5.

Note



Table 4-5. G.826 Statistics Field Descriptions

Field Description

Link #: (display field) Displays the number of the link for which the status is being presented.

Total Time: (display field) Displays the amount of time (in seconds) that the link has been up and running.

Errored Seconds:(display field) A one-second period with one or more errored blocks or at least one defect is known as an errored second. This field displays the number of errored seconds that have occurred since the last counter reset.

Error Free Seconds: (display field) A one-second period of time during which the link was error-free. This field represents the number of error-free seconds that have occurred.

Severely Errored Seconds: (display field)

A subset of errored seconds, a one-second period in which more than 30% of the blocks contain errors is known as a severely errored second. This field displays the number of severely errored seconds that have occurred since the last counter reset.

Consecutive Severely Errored Seconds: (display field)

A continuous occurrence of severely errored seconds, in one-second intervals, which contain >30% or more errored blocks. This field represents the number of consecutive severely errored seconds that have occurred since the last counter reset.

Consecutive Error Free Seconds: (display field)

A display of consecutive one-second period intervals that did not have defects or errors on the link. This field displays the number of consecutive errored free seconds that have occurred since the last counter reset.

Background Block Error: (display field)

An errored block not occurring as part of a severely errored second. This field displays the number of background block errors that have occurred since the last counter reset.

Unavailable Seconds: (display field)

Displays the number of unavailable seconds that have occurred on the link during the current interval. At the onset of 10 consecutive SES events, a period of unavailable seconds begins. These 10 seconds are part of the unavailable seconds count. At the end of 10 consecutive non-SES events, a new period of available time begins. These 10 seconds are part of available time. Unavailable seconds are not counted when factoring ratios.

Errored Seconds Ratio: (display field)

Displays the ratio of errored seconds to total seconds in available time during a fixed measurement interval.

Severely Errored Seconds Ratio: (display field)

Displays the ratio of severely errored seconds to total seconds in available time during a fixed measurement interval.

Background Block Error Ratio: (display field)

Displays the ratio of background block errors to total blocks in available time during a fixed measurement interval. The count of total blocks excludes all blocks during severely errored seconds.



Expose (Link Status) The Expose function is used to display the status of the T1/E1 links and STM-0 Mapper, access link statistics, reinitialize the framer, and insert errors for diagnostic purposes.

View (Expose) T1/E1 Link Status

Navigation:


Diagnostics ↓


Select a T1/E1 Link ↓

[E]xpose

Link Status Link Name.: Link 01 ------------ Link Number: 1 AU-3 [1] TUG-2 [1] TU-12 [1] DIS- E1 -CRC Link Status Link TU Error State ErrSecs Error ErrSecs Error State ErrSecs -----------------------+-----------------------------+---------------------- Red/LOF: On 1401 CRC Errors.........: 1 AIS....: On 1401 Yel/RAI: Off 0 Frm Bit Errors.....: 0 LOP....: Off 0 AIS Ind: On 1401 RDI-TU.: On 1401 OOF....: On 1401 ----------------------------- RFI-TU.: On 1401 Tx Slip: Off 1 System BERT ErrSecs: 0 PSLM...: On 1401 Rx Slip: On 1401 Link BERT ErrSecs..: 0 PSLU...: Off 0 EFS....: 0 --------------------- Sa4-Sa8: 11111 Trunk Conditioning.: On TU-EFS.: 0 [C]lear Counters [G].826 Statistics Link [S]tatistics 15-min Performance [R]eg Re[i]nitialize ----------------- Hit number to insert an error ----------------- [1]Ybit [2]FAS_inv [3]RAI [4]TS16_AIS [5]AIS(unframed all-ones) [7]BERT

Figure 4-6. T1/E1 Link Status Menu (E1 Link shown)

Some of the fields are context sensitive. For example, the CRC errors only appear for links that support CRC such as T1 ESF. An error-free link will display zeroes in all fields.

From the T1/E1 Link Status Menu, you can do the following:

• Press C to clear counters for the selected link (refer to page 4-34).

• Press S to view ESF Statistics (refer to page 4-30).

• Press G to view G.826 Statistics (refer to page 4-9).



• Press R to view 15-minute Performance Registers (refer to page 4-33).

• Press i to reinitialize the T1/E1 framer (refer to page 4-19).

You can also use hot keys to insert errors from the NI side, which are then shown on the remote side. If the remote side is line looped, the inserted errors will be seen on the local side, under Errored Seconds. Error insertion is context sensitive, with different choices for T1 and E1 links.

The information contained in each field on the T1/E1 Link Status Display is detailed in Table 4-6.

Table 4-6. T1/E1 Link Status Field Descriptions

Field Description

Link Name: (display field) Displays the user-assigned name of the exposed link. Underneath this field, additional information identifying the link is provided, including AU Type (AU3 = AU3 number or AU4=TUG-3 number), TUG-2 number, and TU-11 or TU12 number.

Note: These 3 fields coincide with the K, L, & M numbers in the link numbering schemes. See the section titled “T1/E1 Link Numbering Schemes” on page 31 for details.

Link Number: (display field) Displays the link number of the exposed link. Underneath this field, additional information regarding the type of link is provided in a Clear Status/Link Type format. For example, DIS- E1-CRC-CAS identifies the displayed link as an E1 CRC-CAS link with Clear E1 Disabled.

LINK STATUS FIELDS

Error: (column) This column displays the type of error on the specific T1/E1 link for which the status is shown.

State: (column) A display of On in this column next to any of the Error entries indicates that an error condition currently exists on the T1/E1 link. A display of Off indicates that the error condition is not present, but if the errored seconds field has a count, then this alarm has occurred sometime in the past (since the last time that the counter was cleared).

Note: All Error and Alarm states will only be detected in Clear T1/E1 Disabled mode, except for LOS and BPV. These will also be detected in Clear T1/E1 Framed mode.

ErrSecs (Errored Seconds): (column)

The display count in this column indicates the quantity of seconds that the error condition on the T1/E1 link has been present or was present. Press C to clear the counters for this link.

Red/LOF: (display field) This field will display On if a loss of frame alignment has occurred and synchronization has been lost.

Yel/RAI: (display field) This field will display On if a Yellow Alarm (T1) or Remote Alarm Indication (E1) has been generated by the network and sent to the customer premises. It usually means that the network is not correctly receiving the DXC-100 signal (the network is not in sync or a red alarm/LOF has occurred).



Table 4-6. T1/E1 Link Status Field Descriptions (Cont.)

Field Description

AIS Ind (Alarm Indication Signal Indication): (display field)

This field will display On if an unframed “all ones” condition has been detected. An “all ones” pattern is declared when fewer than 4 zeroes received in 3ms period.

OOF (Out of Frame): (display field)

This field will display On to indicate that the received link data stream does not meet pre-set framing criteria. Specifically, this error is reported if 2 out of 4 framing bits are received incorrectly (T1) or 3 consecutive Frame Alignment Signal (FAS) words received incorrectly and/or 915 CRC errors received (if CRC enabled) (E1).

SEF Ind (Severely Errored Frame Indication): (display field)

This field will display On if the receive signal does not meet the requirements of ANSI T1.231. (Applicable to T1 links only)

Tx Slip (Transmit Slip): (display field)

This field will display On to indicate that slip has been detected in the outgoing path.

Rx Slip (Receive Slip): (display field)

This field will display On to indicate that slip has been detected in the incoming path.

EFS (Error-Free Seconds): (display field)

A one-second period of time during which the link was error-free. This field represents the number of error-free seconds that have occurred.

Sa4-Sa8: (E1 display field) Displays the E1 National Bits that are being received over the link.

Note: Received National Bits are displayed for all modes except Unframed.

CRC Errors (Cyclic Redundancy Check Errors): (display field)

This field is a counter that records the number of CRC-6 (T1) or CRC-4 (E1) block errors that have been detected. The test is a 6-bit algorithm that checks the content of the entire frame.

Frm Bit Errors (Framing Bit Errors): (display field)

This field is a counter that records the number of frame alignment bit errors that have been detected. This does not mean that synchronization has been lost.

System BERT ErrSecs: (display field)

Displays the number of errored seconds resulting from BERT patterns not being returned from the direction of the backplane.

Link BERT ErrSecs: (display field) Displays the number of errored seconds resulting from BERT patterns not being returned from the direction of the link.

Trunk Conditioning: (display field)

If trunk conditioning status is On and the control bits indicate a red or yellow alarm is being received, the following occurs:

• Receive data is disabled at all timeslots.

• Idle code is written to corresponding slip buffer according to content of each timeslot (data/voice).

If trunk conditioning status is Off, then no alarms are being received.

TU STATUS

TU Error: (column) This column displays the specific type of TU error being reported.

State: (column) A display of On in this column next to any of the Error entries indicates that an error condition currently exists on the TU. A display of Off indicates that the error condition is not present, but if the errored seconds field has a count, then this alarm has occurred sometime in the past (since the last time the counter was cleared).



Table 4-6. T1/E1 Link Status Field Descriptions (Cont.)

Field Description

TU ErrSecs (Errored Seconds): (column)

The display count in this column indicates the quantity of seconds that the error condition on the TU has been present or was present since the last time the counters were cleared.

The counters can be cleared by pressing C.

AIS: (display field) This field will display On if an alarm indication signal has been detected on the currently displayed link. After AIS is detected, the system will return a yellow alarm signal and pass on channel trunk conditioning.

OR

This field will display On if an alarm indication signal has been detected on a virtual tributary (link) other than the one currently displayed. When this occurs, return to the Payload Diagnostics Manager Menu and check the State of each link to determine which of the links is in an error state.

LOP: (Loss of Pointer) (display field)

This field will display On if several consecutive invalid pointers have been detected in the TU path.

RDI-TU: (display field) Remote Defect Indication had been detected.

RFI-TU: (display field) Remote Failure Indication has been detected.

PSLM: (display field) When On is displayed, indicates that Path Signal Label Mismatch (PSLM) events have been detected in the receive data stream. This occurs when the following conditions exist:

The tributary path signal label (PSL) found in the tributary path overhead byte is processed. An incoming PSL is accepted when it is received unchanged for five consecutive multiframes. The accepted PSL is compared with the associated provisioned value. If they do not match, then PSLM is declared. The TU ErrSecs column indicate the number of seconds where PSLM was present.

PSLU: (display field) Path Signal Label Unstable - When On is displayed, indicates that Path Signal Label Unstable (PSLU) events have been detected in the receive data stream. This occurs when the following conditions exist:

Each time an incoming PSL differs from the one in the previous multiframe, the PSL unstable counter is incremented. Thus, a single bit error in the PSL in a sequence of constant PSL values will cause the counter to increment twice, once on the errored PSL and again on the first error-free PSL. The incoming PSL is considered unstable when the counter reaches five, and PSLU is declared. The PSL is considered stable when the same PSL is received for five consecutive multiframes, at which point Off is displayed. The TU ErrSecs column indicate the number of seconds where PSLU was present.

TU-EFS: (display field) A one-second period of time during which the Tributary Unit was error-free. This field represents the number of error-free seconds that have occurred.



View (Expose) STM-0 Mapper Path Status

Navigation:

DSTM-1 Main Menu

↓

Diagnostics ↓


Mapper ↓

[E]xpose

Path Status -----------

Mapper Number : 1 State Error Seconds ----- ------------- Path LOP.......: Off 0 ES.....: 1 Path AIS.......: Off 0 EFS....: 1435 Path RDI.......: Off 1 [C]lear counters Re[i]nitialize

Figure 4-7. STM-0 Mapper Path Status Display

From the STM-0 Mapper Path Status Display, the only action that is available is pressing C to clear the counters for the mapper or i to reinitialize the Mapper for the selected Payload.

The information contained in each field on the screen is detailed in Table 4-7.

Table 4-7. STM-0 Mapper Path Status Display Field Descriptions

Field Description

State: (column) A display of On in this column next to any of the status entries indicates that an error condition currently exists in the path. A display of Off indicates that the error condition is not present, but if the errored seconds field has a count, then this alarm has occurred sometime in the past (since the last time that the counter was cleared).



Table 4-7. STM-0 Mapper Path Status Display Field Descriptions (Cont.)

Field Description

Error Seconds (column) The display count in this column indicates the quantity of seconds that the error condition on the path has been present or was present. Press C to clear the counters for the path.

Path LOP (Loss of Pointer): (display field)

This field will display On if a loss of STM-1 pointer has been detected.

Path AIS (Alarm Indication Signal): (display field)

This field will display On to report that an Alarm Indication Signal has been detected in the receive path.

Path RDI: (display field) On displayed in this field provides a Remote Defect Indication for the path.

ES (Errored Seconds): (display field)

A one-second period with one or more errored blocks or at least one defect is known as an errored second. This field displays the number of errored seconds that have occurred since the last counter reset.


A one-second period of time during which the link was error-free. This field represents the number of error-free seconds that have occurred.

Error Insertion For diagnostic purposes, specific errors can be inserted and momentarily transmitted either directly to a remote unit or looped back to the DSTM-1 module. You can use hot keys to insert errors from the NI side, which are then shown on the remote side. If the remote side is line looped, the inserted errors will be seen on the local side, under Errored Seconds. Error insertion is context sensitive, with different choices for T1 and E1 links.

Errors cannot be inserted into an unframed link; the error-insertion hot keys will be disabled when a link is in unframed mode.

Insert Errors - T1 or E1 Link

Navigation:

DSTM-1 Main Menu

↓

Diagnostics ↓



[E]xpose

↓

Specific Error Hot Key

Note



Link Status Link Name.: Link 57 ----------- Link Number: 57 AU-3 [3] TUG-2 [1] TU-11 [1] DIS- T1 - ESF Link Status Link Link TU TU Error State ErrSecs Error ErrSecs Error ErrSecs ----------------------+-----------------------+---------------------------- Red/LOF: Off 0 CRC Errors.........: 0 AIS....: Off 0 Yel/RAI: Off 0 Frm Bit Errors.....: 0 LOP....: Off 0 AIS Ind: Off 0 RDI-TU.: Off 0 OOF....: Off 0 ----------------------------- RFI-TU.: Off 0 SEF Ind: Off 0 System BERT ErrSecs: 0 PSLM...: Off 0 Tx Slip: Off 0 Link BERT ErrSecs..: 0 PSLU...: Off 0 Rx Slip: Off 0 ----------------------- EFS....: 11257 Trunk Conditioning.: Off TU-EFS.: 11257 [C]lear Counters [G].826 Statistics Link [S]tatistics 15-min Performance [R]eg Re[i]nitialize ----------------- Hit number to insert an error ----------------- [1]Yel Alarm [7]BERT

Figure 4-8. Link Status Menu - Error Insertion Choices for T1 Links

Link Status Link Name.: Link 01 ----------- Link Number: 1 AU-3 [1] TUG-2 [1] TU-12 [1] DIS- E1 – Link Status Link TU Error State ErrSecs Error ErrSecs Error State ErrSecs -----------------------+-----------------------------+---------------------- Red/LOF: On 1401 CRC Errors.........: 0 AIS....: On 1401 Yel/RAI: Off 0 Frm Bit Errors.....: 0 LOP....: Off 0 AIS Ind: On 1401 RDI-TU.: On 1401 OOF....: On 1401 ----------------------------- RFI-TU.: On 1401 Tx Slip: Off 1 System BERT ErrSecs: 0 PSLM...: On 1401 Rx Slip: On 1401 Link BERT ErrSecs..: 0 PSLU...: Off 0 EFS....: 0 ---------------------- Sa4-Sa8: 11111 Trunk Conditioning.: On TU-EFS.: 0 [C]lear Counters [G].826 Statistics Link [S]tatistics 15-min Performance [R]eg Re[i]nitialize ----------------- Hit number to insert an error ----------------- [1]Ybit [2]FAS_inv [3]RAI [4]TS16_AIS [5]AIS(unframed all-ones) [7]BERT

Figure 4-9. Link Status Menu - Error Insertion Choices for E1 Links

1. Press the specific numeric key indicated on the bottom of the menu to insert a momentary error. The errors and their corresponding hot keys are detailed in Table 4-8.



Table 4-8. T1/E1 Link Error Insertion Selections

Option Description

T1 ERROR INSERTION CHOICES

[1] Yel Alarm Generates a Yellow Alarm.

[7] BERT Generates a pattern slip in a BERT pattern (not a single-bit slip).

E1 ERROR INSERTION CHOICES

[1] Ybit Generates a signaling multiframe Alarm Indication Signal (CAS only).

[2] FAS_inv Forces the Frame Alignment Signal written into Timeslot 0 to be inverted.

[3] RAI Generates a Remote Alarm Indication signal.

[4] TS16_AIS Generates a Alarm Indication Signal in Timeslot 16 (CAS only).

[5] AIS (unframed all-ones) Generates an Alarm Indication Signal in all timeslots (unframed, all ones).

[7] BERT Generates a pattern slip in a BERT pattern (not a single-bit slip).

2. Once the appropriate hot key has been pressed, a prompt similar to Figure 4-10 appears. It will display the type of error that is about to be inserted.

Link Status Link Name.: Link 01 ----------- Link Number: 1 TUG-3 [1] TUG-2 [1] TU-12 [1] DIS- E1 –CRC Link Status ************************************ Error State ErrSecs * * State ErrSecs --------------------- * -MESSAGE!- * ---------------- Red/LOF: Off 0 * * ..: On 13173 Yel/RAI: Off 0 * * ..: Off 0 AIS Ind: On 13173 * Insert FAS_INVERTED? * U.: On 13173 OOF....: Off 0 * * U.: On 13173 Tx Slip: Off 0 * * ..: On 13173 Rx Slip: On 16476 * Are you sure (Y/N)? * ..: Off 0 EFS....: 0 * * ---------------- ************************************ Sa4-Sa8: 00001 S.: 0 [C]lear Counters [G].826 Statistics ESF [S]tatistics 15-min Performance [R]eg Re[i]nitialize ----------------- Hit number to insert an error ----------------- [1]Ybit [2]FAS_inv [3]RAI [4]TS16_AIS [5]AIS(unframed all-ones) [7]BERT

Figure 4-10. Error Insertion Prompt (Typical)

3. Press Y to insert the error. Once the error has been inserted, you are returned to the T1/E1 Link Status Menu, where you can view error status.



Re-initialize T1/E1 Framer The Re-initialize function is used to reset the T1/E1 link framer to its default values. It is used to rewrite values for the framer if you suspect that a configuration change didn’t take or odd problems are occurring on the status displays. This function will only reset the T1/E1 link framer, not the entire module.

Re-initializing the framer will cause data to be momentarily interrupted for the selected link.

Navigation:

DSTM-1 Main Menu

↓

Diagnostics ↓



[E]xpose

↓

Re[i]nitialize

Link Status Link Name.: Link 01 ----------- Link Number: 1 TUG-3 [1] TUG-2 [1] TU-12 [1] DIS- E1 - Link Status *************************************** Error State ErrSe * * State ErrSecs ------------------- * -MESSAGE!- * --------------- Red/LOF: Off 0 * * .: Off 0 Yel/RAI: Off 0 * * .: Off 0 AIS Ind: Off 0 * Reset and re-configure the framer? * .: Off 0 OOF....: Off 0 * * .: Off 0 Tx Slip: Off 0 * * .: Off 0 Rx Slip: Off 0 * Are you sure (Y/N)? * .: Off 0 EFS....: 0 * * --------------- *************************************** Sa4-Sa8: 00000 .: 0 [C]lear Counters [G].826 Statistics ESF [S]tatistics 15-min Performance [R]eg Re[i]nitialize ----------------- Hit number to insert an error ----------------- [1]Ybit [2]FAS_inv [3]RAI [4]TS16_AIS [5]AIS(unframed all-ones) [7]BERT

Figure 4-11. Re-initialize Framer Prompt

Press Y. The T1/E1 framer will be re-initialized, and you are returned to the T1/E1 Link Status submenu.

Press N, and you are returned directly to the T1/E1 Link Status Menu without the framers being re-initialized.

Caution



Re-initialize STM-0 Mapper The Re-initialize function is used to reset the STM-0 Mapper to its default values. It is used to rewrite values for the framer if you suspect that a configuration change didn’t take or odd problems are occurring on the status displays. This function will reset the STM-0 for the selected payload, not the entire module.

Re-initializing the framer will cause data to be momentarily interrupted for the selected STM-0 Mapper and its T1/E1 Links.

Navigation:

DSTM-1 Main Menu

↓

Diagnostics ↓


Mapper ↓

[E]xpose

↓ Re[i]nitialize

Path Status ------------

Mapper Number : 1 St -- *************************************** Path LOP.......: Of * * Path AIS.......: Of * -MESSAGE!- * Path RDI.......: Of * * * * * Reset and re-configure the mapper? * * * * * * Are you sure (Y/N)? * * * *************************************** [C]lear counters Re[i]nitialize

Figure 4-12. Reset STM-0 Mapper Prompt

Press Y. The STM-0 Mapper will be re-initialized, and you are returned to the DSTM-1 Mapper Path Status Display.

Press N, and you are returned directly to the DSTM-1 Mapper Path Status Display without the Mapper being re-initialized.

Caution



Filter Errored Links (All Payloads)

Navigation:

DSTM-1 Main Menu

↓

Diagnostics ↓



[F]ilter Errored Links (all Payloads)

1. If there are no errors, the following display appears:


E1 E1 TU TU Loop BERT BERT BERT Link Name State Err e Duration ErrSecs -----------+--------- ************************************ ------------------ Link 29 OOS 0 * * 0 0 Link 30 OOS 0 * -Hit any key to continue- * 0 0 Link 31 OOS 0 * * 0 0 Link 32 OOS 0 * * 0 0 Link 33 OOS 0 * No Errored Links * 0 0 Link 34 OOS 0 * * 0 0 Link 35 OOS 0 * * 0 0 ----------+--------- * * ------------------ Mapper OOS 0 * * 0 0 ----------+--------- ************************************ Payload[1] Diagnostics Payload[2] Diagnostics Payload[3] Diagnostics [B]ERT [L]oopback [N]ext Page [G].826 ESF [S]tatistics 15-min Performance [R]egisters [E]xpose [I]nService(Toggle View) [C]lear Counters(all Payloads) [F]ilter Errored Links(all Payloads)

Figure 4-13. No Errored Links Display

2. If link errors exist, those links with errors will be shown on a screen similar to the following display:



Links with Errors -----------------------------

Link Name Link-State ErrSecs TU-State TU-ErrSecs BERT-ErrSecs --------- ---------- ------- -------- ---------- ------------ Link 08 M-ERR 4098 OK 0 0 Link 16 M-ERR 4098 OK 0 0 Link 26 M-ERR 4098 OK 0 0 Link 28 M-ERR 4098 OK 0 0 [N]ext Page

Figure 4-14. Links with Errors Display


Table 4-9. Link Error Display Field Descriptions

Field Description

Link Name: (display field) This field displays the user-defined name for the link.

Link-State: (display field) This field displays the errored T1 or E1 link’s status as one of the following:

• AIS - Alarm Indication Signal all ones pattern declared when fewer than 4 zeroes received in 3ms period.


• OOF - Out of Frame: For T1, Frame alignment error reported if 2 out of 4 framing bits received incorrectly. For E1, Frame alignment error reported if 3 consecutive Frame Alignment Signal (FAS) words received incorrectly and/or 915 CRC errors received (if CRC enabled).

• RED - Red Alarm: Carrier Fault Alarm (CFA) declared due to receive signal/framing fault.

• RSLP - Receive Slip: Controlled slip detected on incoming path.

• SEF - (T1 Only) Severely Errored Frame is reported when receive signal does not meet requirements of ANSI T1.231.

• TSLP - Transmit Slip: Controlled slip detected on outgoing path.

• YEL - Yellow Alarm: For T1, indicates Remote Alarm Indication received (D4/SF via bit2 suppression or ESF via priority code word). For E1, indicates Remote alarm indication received (via TS-0 overhead).

ErrSecs: (display field) Displays the number of errored seconds that have occurred for the link.



Table 4-9. Link Error Display Field Descriptions (Cont.)

Field Description

TU State: (display field) This field displays the errored Tributary Unit’s status as one of the following:

• AIS - Indicates that an Alarm Indication Signal has been received from a remote unit.

• LOP - Indicates a Loss of Pointer has been detected.


• PSLU - Indicates Path Signal Label Unstable (PSLU) events have been detected in the receive data stream.

• PSLM - Indicates Path Signal Label Mismatch (PSLM) events have been detected in the receive data stream.


• RFI - Indicates Remote Failure Indication has been detected.

TU ErrSecs: (display field) Displays the number of errored seconds that have occurred on the Tributary Unit since the last time that the counter was reset. The occurrence of a Loss of Frame or a CRC-6 error in a one-second period is known as an errored second.

BERT ErrSecs: (display field)

Displays the number of errored seconds that have occurred since BERT was enabled.

Diagnostic Loops Diagnostic Loopbacks available for the DSTM-1 module include three types of T1/E1 Link Loops (Local, Line, Payload), two STM-0 Mapper Loops (Local, Line), and three DSTM-1 Transport Loops (Facility, Path Facility, Terminal).

These loopbacks are shown in Figure 4-15.



TX

RX

TX

RX

TX

RX

Local Loop

Line Loop*

Payload Loop**

** Payload Loop is different than a line loop, in that it onlyloops the data (payload), and the framing is regenerated.

* For Line Loop, the framing is not regenerated andthe entire frame is looped.

Backplane Interface

T1/E

1Fr

amer

STM

-0M

appe

r

STM

-1Fr

amer

Other DXC-100

ApplicationModules

DSTM-1InterfaceModule(Rear)

DSTM-1 Application Module(Front)

T1/E

1 Li

nk L

oops

TX

RX

TX

RX

STM-0 Mapper Local Loop

STM-0 Mapper Line Loop*STM

-0M

appe

r Loo

psST

M-1

Tran

spor

t Loo

ps

TX

RX

TX

RX

STM-1 Terminal Loop

STM-1 Path Facility Loop

TX

RXSTM-1 Facility Loop

Figure 4-15. DSTM-1 Diagnostic Loopbacks

Link Loops can be enabled from the Loop Selection screen as detailed below. Also available are Mapper Loops (description begins on page 4-28) and DSTM-1 Loops (description begins on page 4-37).



T1/E1 Link Diagnostic Loops

Navigation:

DSTM-1 Main Menu

↓

Diagnostics ↓



[L]oopback

Link: 2 Link Loopback Selection Screen ------------------------------

Current Loopback.: Off New Loopback.....: Off Link Loopback: [O]ff [L]ocal Li[n]e [P]ayload

Figure 4-16. Link Loopback Selection Screen

1. To select a specific loop, either place the cursor on the New Loopback field and press <Enter> to cycle through the choices OR press the specific key indicated on the bottom of the menu. The selectable link loops are described in Table 4-10, and illustrated in Figure 4-15.

2. Once you have selected a loop, press X to enable it. The following prompt appears:



Link: 1

************************************ * * * -MESSAGE!- * * * * * * Process Loop Command? * * * * * * Are you sure (Y/N)? * * * ************************************ Link Loopback: [O]ff [L]ocal Li[n]e [P]ayload

Figure 4-17. Process Loop Prompt

3. Press Y to initiate the loop, and you are returned to the Payload Diagnostics Manager Menu. Press N to exit and return to the Payload Diagnostics Manager Menu.

Table 4-10. T1/E1 Link Loopback Options

Option Description

Local Puts a T1/E1 link into Local Loop (a.k.a. Link Terminal Loopback). PCM data from the switch fabric will be reflected at the Tx output of the T1/E1 framer back to the Rx input of the T1/E1 Framer. All Timeslots will be in loopback with respect to the timeslot switch fabric. This diagnostic is useful in tracking down problems to the Framer level. The backplane, Time Slot Switch Fabric, and Framers are isolated from the SDH Hierarchy hardware for closed loop testing.

SDH Mapper

T1/E1 FramerElastic Bufferand TimingInterface

TUMapper

DXC-100

STM-1

SDH Mapper

DSTM-1 Interface Module(Rear)

DifferentialTx, Rx

Interface

FiberOptic

Interface

STM-0SDH

Mapper(1 of 3)

DSTM-1 Module(Front)

Figure 4-18. T1/E1 Link Local Loop



Table 4-10. T1/E1 Link Loopback Options (Cont.)

Option Description

Line Puts a T1/E1 link into Line Loop (a.k.a. Link Facility Loopback). The serial data stream arriving at the Rx input of the T1/E1 framer is connected to the Tx driver stage of the T1/E1 framer. No re-framing is performed. The data stream is sent back up through the SDH hierarchy to be reassembled with other Tributary Units to eventually form a STM-1 link which is sent back to the originating equipment. This diagnostic is useful for eliminating the individual T1/E1 Framers and relevant sections the module's time slot switch fabric from diagnostic testing. When all of the Framers are in Line Loopback, the receive-transmit bus at the SDH Mappers and the STM-1 Mapper interface are isolated from the backplane. The SDH Hierarchy Hardware is isolated for closed loop testing.

SDH Mapper

T1/E1 FramerElastic Bufferand TimingInterface

TUMapper

DXC-100

STM-1

SDH Mapper


DifferentialTx, Rx

Interface

FiberOptic

Interface

STM-0SDH

Mapper(1 of 3)


Figure 4-19. T1/E1 Link Line Loop

Payload Initiates a Payload Loop. The Payload Loop allows the data extracted from the Receive Tributary unit (TU) processors to be looped back and remapped by the Transmit Tributary processors, and thus rebuilt as an embedded STM-0 frame within the STM-1. A Payload Loop is very similar to a Line Loop, except that it only loops the data (payload) and the framing is regenerated.

Note: Payload loop will not function when using Clear T1/E1 Unframed mode.

DXC-100

STM-1

SDH Mapper


DifferentialTx, Rx

Interface

FiberOptic

Interface

STM-0 SDHMapper(1 of 3)


Figure 4-20. Payload Loop

Off No loopbacks are enabled.



STM-0 Mapper Diagnostic Loops

Navigation:

DSTM-1 Main Menu

↓

Diagnostics ↓


Select Mapper ↓

[L]oopback

Mapper Loopback Selection Screen ----------------------------------

Current Loopback.: Off New Loopback.....: Off Mapper Loopback: [O]ff [L]ocal Li[n]e

Figure 4-21. STM-0 Mapper Loopback Selection Screen

1. To select a specific loop, either place the cursor on the New Loopback field and press <Enter> to cycle through the choices OR press the specific key indicated on the bottom of the menu. The selectable STM-0 Mapper loops are described in Table 4-11, and illustrated in Figure 4-15.




************************************ * * * -MESSAGE!- * * * * * * Process Loop Command? * * * * * * Are you sure (Y/N)? * * * ************************************ Mapper Loopback: [O]ff [L]ocal Li[n]e

Figure 4-22. Process STM-0 Mapper Loop Prompt

3. Press Y to initiate the loop, and you are returned to the Diagnostics Manager Menu. Press N to exit and return to the Diagnostics Manager Menu.

STM-0 Mapper Loops will only be initiated on the selected payload.

Table 4-11. STM-0 Mapper Loopback Options

Option Description

Off No loopbacks are enabled.

Local Loop Initiates an STM-0 Mapper Local Loopback (a.k.a. TU Mapper Terminal Loop).

T1/E1 FramerElastic Buffer

and TimingInterface

TUMapper

DXC-100

STM-1

SDH Mapper


DifferentialTx, Rx

Interface

FiberOptic

Interface

STM-0SDH

Mapper(1 of 3)


Figure 4-23. STM-0 Mapper Local Loop

Note



Table 4-11. STM-0 Mapper Loopback Options (Cont.)

Option Description

Line Loop Initiates a STM-0 Mapper Line Loopback (a.k.a. TU Mapper Facility Loop)

T1/E1 FramerElastic Buffer

and TimingInterface

TUMapper

DXC-100

STM-1

SDH Mapper


DifferentialTx, Rx

Interface

FiberOptic

Interface

STM-0SDH

Mapper(1 of 3)


Figure 4-24. STM-0 Mapper Line Loop

STM-1 Transport Diagnostic Loops

For information on STM-1 Transport-level loopbacks, see “STM-1 Transport Diagnostic Loops”, which begins on page 4-37.

ESF Statistics (T1 ESF Links)

This status screen displays ESF performance statistics for the selected link for the duration of time that the link was up and running. It allows you to view both current and 24-hour ESF Statistics. The Current column displays the counts for the current time interval (maximum 15 minutes). The 24 Hour column displays the counts for the preceding 24-hour period. The information has no meaning in Clear T1/E1 Unframed mode.

Navigation:

DSTM-1 Main Menu

↓

Diagnostics ↓


Select T1 Link ↓

ESF [S]tatistics

OR DSTM-1 Main Menu

↓

Diagnostics ↓


Select T1 Link ↓

[E]xpose

↓

ESF [S]tatistics

ESF Statistics cannot be displayed for T1 D4 Framed Links or E1 Links.

Note



ESF Statistics For Link#: 1 Register Curr 24 Hr ------------------------------------ Errored seconds.........: 0 0 Failed seconds (UAS)....: 0 0 Severely errored seconds: 0 0 Bursty errored seconds..: 0 0 Loss of frame count.....: 0 0 Time in interval........: 0 # Valid intervals.......: 0 ESF status..............: 00000000

Figure 4-25. ESF Statistics Display

The ESF Statistics display is a read-only screen. The information contained in each field on the screen is detailed in Table 4-12.

Table 4-12. ESF Statistics Display Field Descriptions

Field Description

Errored Seconds: (display field)

The occurrence of a Loss of Frame or a CRC-6 error in a one-second period is known as an errored second. This field displays the number of errored seconds that have occurred.

Failed Seconds (UAS): (display field)

Each one-second period during the occurrence of a Failed Signal State (10 consecutive errored seconds) is known as a failed second. This field displays the number of failed seconds that have occurred.

Severely Errored Seconds: (display field)

A one-second period in which 320 or more CRC-6 errors have occurred is known as a severely errored second. This field displays the number of severely errored seconds that have occurred.

Bursty Errored Seconds: (display field)

A one-second period in which more than one but less that 320 CRC-6 errors have occurred is known as a bursty errored second. This field displays the number of bursty errored seconds that have occurred.

Loss of Frame Count: (display field)

A loss of frame occurs when either Network equipment or the DTE senses errors in the framing pattern. Depending upon the equipment, this occurs when any 2 of 4, 2 of 5, or 3 of 5 consecutive terminal framing bits received contain bit errors in the framing pattern.

Time in Interval: (display field)

A timer that tracks the number of seconds (0 to 900) since the start of the current 15-minute interval.

# Valid Intervals: (display field)

A counter that tracks the total number of 15-minute intervals in a 24 hour period (up to 96).



Table 4-12. ESF Statistics Display Field Descriptions (Cont.)

Field Description

ESF Status: (display field)

This field defines the status of the T1/E1 line. The status is defined by an 8-digit number that is described below: example: F00000L0 Digit #1 - “F” or “0” where “F” indicates Failed Signal State (FSS) if “U” or “L” is true. Digit #2 - “U” or “0” where “U” indicates an unavailable signal state. Digit #3 through #6 and #8 are always “0.” Digit #7 - “L” or “0” where “L” indicates that the T1 line is in loop.

In Service Links The In-Service command is used to display only those links that are currently in service.

Navigation:

DSTM-1 Main Menu

↓

Diagnostics ↓


[I]nService(Toggle View)

1. The display will refresh, and only those links which are currently in service will appear in the Payload Diagnostics Manager Menu, as seen below. Compare with the normal Payload Diagnostics Manager Menu (Figure 4-2), in which all links are displayed.


E1 E1 TU TU Loop BERT BERT BERT Link Name State ErrSecs State ErrSecs back State Duration ErrSecs -----------+-------------+-------------+------------+--------------------------- Link 26 OK 0 OK 3 Off Off Off 0 0 Link 27 RED 45275 OK 3 Off Off Off 0 0 Link 28 RED 45275 OK 3 Off Off Off 0 0 -----------+-------------+-------------+------------+--------------------------- Mapper OK 2 NA NA Off NA Off 0 0 -----------+-------------+-------------+------------+--------------------------- Payload[1] Diagnostics Payload[2] Diagnostics Payload[3] Diagnostics [B]ERT [L]oopback [N]ext Page [G].826 ESF [S]tatistics 15-min Performance [R]egisters [E]xpose [I]nService(Toggle View) [C]lear Counters(all Payloads) [F]ilter Errored Links(all Payloads)

Figure 4-26. Payload Diagnostics Manager Menu (In-Service Links)



2. Press the I key, and all links are again displayed.

15-minute Performance Registers (T1 ESF Links) The 15-minute Performance Registers Display is a read-only screen. It displays the same information as the ESF Statistics Display, but it is broken down by link for each of the ninety-six 15-minute intervals in the preceding 24-hour period. The information has no meaning in Clear T1/ E1 Unframed mode.

Navigation:

DSTM-1 Main Menu

↓

Diagnostics ↓


Select T1 Link ↓

15-min Performance [R]egisters

OR DSTM-1 Main Menu

↓

Diagnostics ↓


Select T1 Link ↓

[E]xpose

↓ 15-min Performance [R]eg

15-minute Performance Registers cannot be displayed for D4 framed links or E1 links.

15-min Performance Registers For Link#: 7 INT ES FS SES BES INT ES FS SES BES INT ES FS SES BES ----------------------------------------------------------------- 01. 000 000 000 000 17. 000 000 000 000 33. 000 000 000 000 02. 000 000 000 000 18. 000 000 000 000 34. 000 000 000 000 03. 000 000 000 000 19. 000 000 000 000 35. 000 000 000 000 04. 000 000 000 000 20. 000 000 000 000 36. 000 000 000 000 05. 000 000 000 000 21. 000 000 000 000 37. 000 000 000 000 06. 000 000 000 000 22. 000 000 000 000 38. 000 000 000 000 07. 000 000 000 000 23. 000 000 000 000 39. 000 000 000 000 08. 000 000 000 000 24. 000 000 000 000 40. 000 000 000 000 09. 000 000 000 000 25. 000 000 000 000 41. 000 000 000 000 10. 000 000 000 000 26. 000 000 000 000 42. 000 000 000 000 11. 000 000 000 000 27. 000 000 000 000 43. 000 000 000 000 12. 000 000 000 000 28. 000 000 000 000 44. 000 000 000 000 13. 000 000 000 000 29. 000 000 000 000 45. 000 000 000 000 14. 000 000 000 000 30. 000 000 000 000 46. 000 000 000 000 15. 000 000 000 000 31. 000 000 000 000 47. 000 000 000 000 16. 000 000 000 000 32. 000 000 000 000 48. 000 000 000 000 [N]ext Page

Figure 4-27. 15-Minute Performance Registers Display

You can press N to view the next 48 intervals. The information contained in each field on the screen is detailed in Table 4-13.

Note



Table 4-13. 15-Minute Performance Registers Display Field Descriptions

Field Description

INT (Interval): (display field) The interval number for the ninety-six 15-minute intervals preceding the current interval, with 01 being the most recent.


The occurrence of a Loss of Frame or a CRC-6 error in a one-second period is known as an errored second. This field displays the number of errored seconds that have occurred.

FS (Failed Seconds): (display field)

Each one-second period during the occurrence of a Failed Signal State (ten consecutive errored seconds) is known as a failed second. This field displays the number of severely errored seconds that have occurred.

SES (Severely Errored Seconds): (display field)

A one-second period in which three hundred twenty (320) or more CRC-6 errors have occurred is known as a severely errored second. This field displays the number of severely errored seconds that have occurred.

BES (Bursty Errored Seconds): (display field) (displayed for T1 links only)

A one-second period in which more than one but less than 320 CRC-6 errors has occurred is known as a bursty errored second. This field displays the number of bursty errored seconds that have occurred.

Clear Counters You may elect to either clear the error counters for a specific link, or for all links.

There are no prompts for clearing the counters. All counters are cleared immediately.

Clear Counters for an Individual T1/E1 Link

Navigation:

DSTM-1 Main Menu

↓

Diagnostics ↓



[E]xpose

↓ [C]lear Counters

If you do not first press E (Expose) for the individual link before pressing C (Clear Counters). ALL link counters will be cleared.

Note

Note



STM-1 Transport Diagnostics Center The Transport Status Display provides access to STM-1 Transport Loopback Facilities and Laser Controls. It also provides a method for reinitializing the STM-1 Overhead Transport Facility, and for clearing counters for the STM-1 Transport Facility.

Navigation:


Diagnostics ↓

Transport Diagnostics Center

Transport Status -----------------

State Error Seconds ----- ------------- Line-AIS.......: Off 0 Line-RDI.......: Off 0 Line-OOF.......: Off 0 Line-LOF.......: Off 0 Line-LOS.......: Off 0 ES.....: 0 EFS....: 0 Laser State.......: On Loopback Status...: Off Signal Failure.: On 1 Signal Degrade.: Off 1 [C]lear counters [L]oopback L[a]ser Re[i]nitialize

Figure 4-28. Transport Status Display

From the Transport Status Display, you can do the following:

• Press C to clear counters for the STM-1 Transport Facility

• Press L to access STM-1 Transport Loopbacks (refer to page 4-37).

• Press a to access the Laser Controls Menu (refer to page 4-40).

• Press i to reinitialize the STM-1 Transport Facility (refer to page 4-41).




Table 4-14. Line Status Display Field Descriptions

Field Description

State: (column) A display of On in this column next to any of the status entries indicates that an error condition currently exists on the line. A display of Off indicates that the error condition is not present, but if the errored seconds field has a count, then this alarm has occurred sometime in the past (since the last time that the counter was cleared).

Error Seconds: (column) The display count in this column indicates the quantity of seconds that the error condition on the line has been present or was present. Press C to clear the counters for the line.

Line AIS (Alarm Indication Signal): (display field)

This field will display On if an unframed “all ones” condition has been detected on the line.

Line RDI (Remote Defect Indication): (display field)

On displayed in this field provides a Remote Defect Indication for the line.

Line OOF (Out of Frame): (display field)

This field will display On to indicate that the received link data stream does not meet preset framing criteria.

Line LOF (Loss of Frame): (display field)

On displayed in this field indicates that a Loss of Frame condition exists on the line.

Line LOS (Loss of Signal): (display field)

On displayed in this field indicates that a Loss of Signal condition exists on the line.


A one-second period with one or more errored blocks or at least one defect is known as an errored second. This field displays the number of errored seconds that have occurred since the last counter reset.


A one-second period of time during which the line was error-free. This field represents the number of error-free seconds that have occurred.

Laser State: (display field) This field displays the status of the Laser as shown in the Laser Controls Menu and the LASER LED on the Rear interface module.

Loopback Status: (display field) On in this field indicates that the line is currently in loopback status.

Signal Failure: (display field) Displays the status of the threshold checks for Signal Failure (SF). If On, SF is being declared (threshold has been surpassed) and switchover may occur. However, if a higher priority command is in effect, switchover will not occur. See Table 4-20 for Redundancy Priorities.

Signal Degrade: (display field) Displays the status of the threshold checks for Signal Degrade (SD). If On, SD is being declared (threshold has been surpassed). If this is set to On, then the SF display is irrelevant since the lower SD threshold will already have been surpassed. Switchover may then occur, however, if a higher priority command is in effect, switchover will not occur. See Table 4-20 for Redundancy Priorities.



STM-1 Transport Diagnostic Loops

This menu allows you to activate and deactivate STM-1-level loopbacks, including Terminal, Facility, and Path Facility loopbacks.

Navigation:

DSTM-1 Main Menu

↓

Diagnostics ↓

Transport Diagnostics Center ↓

[L]oopback

Transport Loopback Selection ----------------------------

Current Loopback.: Off New Loopback.....: Off Loopback: [O]ff [T]erminal [F]acility [P]ath Facility

Figure 4-29. STM-1 Transport Loopback Selection Menu

1. To select a specific loop, either place the cursor on the New Loopback field and press <Enter> to cycle through the choices OR press the specific key indicated on the bottom of the menu. The selectable transport loops are described in Table 4-15, and illustrated in Figure 4-15.




************************************ * * * -MESSAGE!- * * * * * * Process Loop Command? * * * * * * Are you sure (Y/N)? * * * ************************************ Loopback: [O]ff [T]erminal [F]acility [P]ath Facility

Figure 4-30. Process Loop Prompt

3. Press Y to initiate the loop, and you are returned to the Transport Status Menu. Press N to exit and return to the Transport Status Menu.

Table 4-15. DSTM-1 Transport Loopback Options

Option Description

[O]ff No loopbacks are enabled.

[T]erminal Initiates a STM-1 Terminal Loopback. The entire STM-1 payload may be tested via the DXC-100 switch fabric with the Terminal Loopback. In this mode, the STM-1 line interface transmit driver is connected to the STM-1 receiver. Ultimately the payload is reflected back to the Switch Fabric and the PCM Highway of the DXC-100 Backplane.

DXC-100

STM-1

SDH Mapper


DifferentialTx, Rx

Interface

FiberOptic

Interface

STM-0SDH

Mapper(1 of 3)


Figure 4-31. STM-1 Terminal Loopback



Table 4-15. DSTM-1 Transport Loopback Options (Cont.)

Option Description

[F]acility Initiates a STM-1 facility loopback. The STM-1 mapper on the application module (front card) is capable of having its receiver output connected to the transmitter input. The net effect is that the fiber optic path is looped back to the "facility". The MSOH, AU Pointer, and RSOH in the STM-1 SDH overhead remain intact in this Loopback.

In metallic interfaces (i.e., T1, E1) facility loopback is equivalent to the line loopback. The receive path to the cross connect fabric remains unencumbered. However, the path from the cross connect fabric to STM-1 module's transmitter is severed, and is substituted by the Optical Receiver's output data stream.

DXC-100

STM-1

SDH Mapper


DifferentialTx, Rx

Interface

FiberOptic

Interface

STM-0SDH

Mapper(1 of 3)


Figure 4-32. STM-1 Facility Loopback

[P]ath Facility Initiates a Path Facility Loopback. This system loopback offers more depth and scope than the STM-1 Facility Loopback. The entire SDH Frame and De-frame mechanism is involved all the way down to the path level when this loopback is activated. As with the Facility Loopback, the STM-1 incoming data (Rx) is transmitted back to its source via the Tx path. The bus that interfaces to the STM-0 Mappers is in loopback, and the entire SDH payload is returned to its source with a refreshed SDH frame structure.

DXC-100

STM-1

SDH Mapper


DifferentialTx, Rx

Interface

FiberOptic

Interface

STM-0SDH

Mapper(1 of 3)


Figure 4-33. STM-1 Path Facility Loopback



Laser Controls Menu

This menu allows you to turn the laser On or Off for personnel safety purposes.

The laser will also be shut down when the DSTM-1 application module is removed.

Navigation:


Diagnostics ↓


L[a]ser

Laser Controls Menu -------------------

Current Laser State .: On New Laser State .....: On Laser State: [O]ff O[n]

Figure 4-34. Laser Controls Menu

1. From the New Laser State field, you can press the <Enter> key to toggle the laser Off or On. You may also press the appropriate hot key to toggle the laser [O]ff or O[n]. A confirmation prompt will then appear to insure that this feature is used with discretion:

Note



************************************ * * * -MESSAGE!- * * * * * * Process Laser Command? * * * * * * Are you sure (Y/N)? * * * ************************************ Laser State: [O]ff O[n]

Figure 4-35. Process Laser Command Prompt

2. Press Y to process the command, or press N to exit and return to the Transport Status Display.

The DSTM-1 interface module (rear card) provides a yellow LASER LED indicator. When the laser is active, this LED is illuminated (solid yellow). When the laser is off, the LED is not lit.

Re-initialize STM-1 Transport Facility

The Re-initialize function is used to reset and reconfigure the STM-1 Transport Facility.

Re-initializing the framer will cause data to be momentarily interrupted for all links on the STM-1 Transport Facility.

Navigation:

DSTM-1 Main Menu

↓

Diagnostics ↓


Re[i]nitialize

Note

Caution



Transport Status -----------------

************************************************* Line-AIS...... * * Line-RDI...... * -MESSAGE!- * Line-OOF...... * * Line-LOF...... * * Line-LOS...... * OverHead Transport : Reset and re-configure? * ES.....: 2673 * * EFS....: 0 * * * Are you sure (Y/N)? * * * ************************************************* Signal Failure.: On 1 Signal Degrade.: Off 1 [C]lear counters [L]oopback L[a]ser Re[i]nitialize

Figure 4-36. Reinitialize Overhead Transport Prompt



PCM Signaling Display Menu The states of the AB, and/or ABCD signaling states within a PCM (T1/E1) stream are displayed here. The state "N/A" applies to unassigned or data-only timeslots in the PCM stream.

Navigation:

DSTM-1 Main Menu

↓

Diagnostics ↓

PCM Signaling Display

PCM Signaling Display Menu --------------------------

Link: 1 [D]isplay Signaling

Figure 4-37. PCM Signalling Display Menu

1. From the PCM Signalling Display Menu, press <Enter>. Type in the link number that you want to view, then press <Enter> again.

Remember that the link numbering is contiguous for T1, but there are gaps in the link numbers for E1. Refer to Table 3-4 for details on link numbering.

2. Press D, and the following menu appears displaying the selected link:

Note



Link:22 PCM Signaling Display Menu DS0 To System DS0 To System ---------------------------------------------------------- 01 A_C_ 13 A_C_ 02 A_CD 14 A_CD 03 AB__ 15 AB__ 04 AB_D 16 AB_D 05 ABC_ 17 Data 06 ABCD 18 Data 07 ___D 19 N/A 08 __C_ 20 N/A 09 _CD_ 21 N/A 10 _B__ 22 N/A 11 _B_D 23 N/A 12 _BC_ 24 N/A

Figure 4-38. PCM Signaling Display Menu

The PCM Signaling Display Menu is a read-only screen that displays the control signals for a selected link. This menu will automatically refresh every 5 seconds. The information displayed in each field on the screen is detailed in Table 4-16. To exit this menu, press X.

Table 4-16. PCM Signaling Display Menu Field Descriptions

Field Description

Link: (display field) Displays the link number for which the control signals are shown.

DS0: (T1 display field) or

Chls: (E1 display field)

Displays the T1 timeslot (DS0) or E1 channel (Chl) for which the status is being reported.

To System: (display field) Displays the PCM signaling bit status (per ATT Technical Reference 43801) in the direction of the DXC-100 Bus. N/A indicates that the DS0/Channel has not been mapped. Data indicates that the DS0/Channel is being used to pass data. Voice traffic is indicated by the display of signaling bits in an ABCD format, depending upon application. A letter (A, B, C, or D) indicates a logic “high” or one, while an underscore indicates a logic “low” or zero.


Utilities Menu 4-45

4.2 Utilities Menu

The Utilities Menu provides access to four submenus from which you can perform a Cold Reset, a Warm Reset, or change the module’s status to In Service or Out of Service. You can also view the Link Mapping Table, which provides a display of the payload, TUG, and TU numbers for each T1/E1 link.

Navigation:

DSTM-1 Main Menu

↓

Utilities

Utilities Menu --------------

Cold Reset Device Warm Reset Device Board Status: In Service Link Mapping Table

Figure 4-39. Utilities Menu

A Cold Reset takes approximately 40 seconds and a Warm Reset takes approximately 20 seconds. Both will cause data to be briefly interrupted; use a Warm Reset for minimum interruption.

Caution


4-46 Utilities Menu

Table 4-17. Utilities Menu Option Table

Option Description

Cold Reset Device The Cold Reset Device utility causes the DSTM-1 module to initialize to its power-up configuration. A Cold reset takes approximately 40 seconds, and is used to reset the entire DSTM-1 module including resetting the framers and downloading the FPGA software. During this boot-up cycle, no user data will flow. Since the configuration resides on the System Manager Controller, connections will be restored.

Warm Reset Device The Warm Reset Device utility causes the DSTM-1 module to initialize to its power-up configuration. A Warm reset takes approximately 20 seconds, and does not reset framers or download FPGA software. During this boot-up cycle, no user data will flow. Since the configuration resides on the System Manager Controller, connections will be restored.

Board Status The Board Status utility allows the administrator to put the DSTM-1 module In Service or Out of Service.

Link Mapping Table The Link Mapping Table provides a display of the payload, TUG, and TU numbers for each T1/E1 link.

Cold Reset Device The Cold Reset Device utility is used to reset the entire DSTM-1 module including resetting the framers and downloading the FPGA software. It causes the DSTM-1 module to initialize to its power-up configuration, and during this boot-up cycle, no user data will flow. Since the module configuration resides on the DSMC.2, all connections will be restored.

Navigation:

DSTM-1 Main Menu

↓

Utilities ↓

Cold Reset Device

A Cold Reset takes approximately 40 seconds, and causes data to be briefly interrupted; if possible use a Warm Reset for less interruption.

1. Once Cold Reset Device has been selected, the following prompt appears:

Caution


Utilities Menu 4-47


************************************ * * * -MESSAGE!- * * * * * * Reset this STM1 board? * * * * * * Are you sure (Y/N)? * * * ************************************

Figure 4-40. Cold Reset Device Prompt

2. Press Y to reset the board, and wait for the module to reset. This will take approximately 40 seconds for a Cold Reset, after which you will be returned to the Nest Summary Menu and the Device State will be displayed as Online.

Once you have been returned to the Nest Summary Menu, the DSTM-1 module’s state will cycle through a combination of Standby, Out of Service, and Online. This is a normal occurrence when the device resets. Wait for the Device State on the menu to display Online before you proceed.

Warm Reset Device The Warm Reset Device utility is used to reset the DSTM-1 module, but it does not reset framers or download FPGA software. It causes the DSTM-1 module to initialize to its power-up configuration, and during this boot-up cycle, no user data will flow. Since the module configuration resides on the DSMC.2, all connections will be restored.

Navigation:

DSTM-1 Main Menu

↓

Utilities ↓

Warm Reset Device

A Warm Reset takes approximately 20 seconds, and causes data to be briefly interrupted.

Note

Caution


4-48 Utilities Menu

1. Once Warm Reset Device has been selected, the following prompt appears:


************************************ * * * -MESSAGE!- * * * * * * Warm Reset Device? * * * * * * Are you sure (Y/N)? * * * ************************************

Figure 4-41. Warm Reset Device Prompt

2. Press Y to reset the board, and wait for the module to reset. This will take approximately 20 seconds for a Warm Reset, after which you will be returned to the Nest Summary Menu and the Device State will be displayed as Online.

Once you have been returned to the Nest Summary Menu, the DSTM-1 module’s state will cycle through a combination of Standby, Out of Service, and Online. This is a normal occurrence when the device resets. Wait for the Device State on the menu to display Online before you proceed.

Board Status The Board Status utility allows the Administrator to put a device In Service or Out of Service.

If a module is set to Out of Service, you cannot enter the Diagnostics Menu.

Navigation:

DSTM-1 Main Menu

↓

Utilities ↓

Board Status

If the board status was In Service, the following prompt appears:

Note

Note


Utilities Menu 4-49


************************************ * * * -MESSAGE!- * * * * * * Set device to Out Of Service? * * * * * * Are you sure (Y/N)? * * * ************************************

Figure 4-42. Board Status Screen (IS to OOS)

Press Y. The module is set to Out of Service, and you are returned to the Utilities Menu.

If the board status was Out of Service, the following prompt appears:


**************************************************** * * * -MESSAGE!- * * * * * * Set device to In Service? **Device Will Reset** * * * * * * Are you sure (Y/N)? * * * ****************************************************

Figure 4-43. Board Status Screen (OOS to IS)


4-50 Utilities Menu

Press Y. The module will be reset, the module will be set to In Service, and you are returned to the Nest Summary Menu. Press N, and you are returned to the Utilities Menu.

It can take up to 20 seconds for the Board Status to change to In Service. Once you have been returned to the Nest Summary Menu, the DSTM-1 module’s state may cycle through a combination of Online, Standby, Out of Service, and finally Online. This is a normal occurrence when the device resets. Wait for the Device State on the Slot Summary Menu to display Online before you proceed.

Link Mapping Table The Link Mapping Table provides a display of the payload, TUG, and TU numbers for each T1/ E1 link.

Navigation:

DSTM-1 Main Menu

↓

Utilities ↓

Link Mapping Table

Link Mapping Table ------------------

Link Payload TUG2 TU Link Payload TUG2 TU ----- ------- ---- -- ----- -------- ----- -- 1 1 1 1 15 1 1 3 2 1 2 1 16 1 2 3 3 1 3 1 17 1 3 3 4 1 4 1 18 1 4 3 5 1 5 1 19 1 5 3 6 1 6 1 20 1 6 3 7 1 7 1 21 1 7 3 8 1 1 2 22 1 0 0 9 1 2 2 23 1 0 0 10 1 3 2 24 1 0 0 11 1 4 2 25 1 0 0 12 1 5 2 26 1 0 0 13 1 6 2 27 1 0 0 14 1 7 2 28 1 0 0 [N]ext ( '0' for TUG2/TU represents invalid value.)

Figure 4-44. Link Mapping Table

The Link Mapping Table is a read-only screen. To exit the screen, press X and you are returned to the Utilities Menu.

Note


1+1 Redundancy Menu 4-51

4.3 1+1 Redundancy Menu

The DSTM-1 module’s Automatic Protection Switching (APS) redundancy features are accessed via the 1+1 Redundancy Menu. APS provides an automatic switchover from a Working (online) module to a Protection (backup) module in the event of a module or optical link failure. The 1+1 Redundancy Menu allows you to view APS Status, force APS switchovers, and set other Redundancy Controls.

If you have two modules installed and are going to use APS Redundancy, the Primary DSTM-1 module must be installed in an even-numbered slot and the Secondary DSTM-1 module must be installed in the adjacent (next higher) odd-numbered slot.

Navigation:

DSTM-1 Main Menu

↓

1+1 Redundancy

1+1 Redundancy Menu --------------------

APS Control/Status Device Redundancy Status

Figure 4-45. 1+1 Redundancy Menu

Note


4-52 1+1 Redundancy Menu

APS Control/Status

Navigation:

DSTM-1 Main Menu

↓

1+1 Redundancy ↓

APS Control/Status

APS Control/Status Menu -----------------------

Card Type...: Protection Redundancy State..: Detected Card State..: Offline Line Rx K1 Byte..: 11111111 Signal Failure..: On Line Rx K2 Byte..: 11111111 Signal Degrade..: Off -------------------------- System -------------------------- System Rx Request Code.......: Reverse Request System Tx Request Code.......: SF-Low Priority User [R]equest K1, K2 Byte D[e]scription

Figure 4-46. APS Control/Status Menu

The APS Status Menu is a read-only screen. The only actions that can be accomplished here are pressing R to set a Request Code or pressing e to see descriptions for the K1 and K2 bytes. The next subsections of this document will cover these options.

Descriptions for each field on this screen are supplied in Table 4-18. To exit this menu, press X.



Table 4-18. APS Status Menu Field Descriptions

Field Description

Card Type: (display field) Displays whether the DSTM-1 module is configured as Working or Standby.

Card State: (display field) Displays the current state of the DSTM-1 module as one of the following:

• Online - The card is good and is on the bus.

• Standby - The card is good and is off the bus.

• Offline - The card has general failure (failure that does not affect back-plane operations) however, it is blocked from access to the bus.

• Defective - The card has general failure and is on the bus.

• Diagnostic - Diagnostics play a role in APS by detecting test failures recorded by the diagnostics manager.

• Bus Error - The card has bus failure (failure that will impact other buses) and is off the bus. Bus Error conditions are any or all of the following: System clock is not present. Frame sync pulse is not present. Front or rear card is not present.

Redundancy State: (display field)

Displays the status of the redundant card as one of the following:

• Detected - The redundant card has been detected.

• Standby - The card is good and is off the bus.

• Online - The card is good and is on the bus

• Offline - The card has general failure (failure that does not affect back-plane operations) however, it is blocked from access to the bus.

• Defective - The card has general failure and is on the bus.

• Diagnostic - Diagnostics play a role in APS by detecting test failures recorded by the diagnostics manager.

• Bus Error - The card has bus failure (failure that will impact other buses) and is off the bus. Bus Error conditions are any or all of the following: System clock is not present. Frame sync pulse is not present. Front or rear card is not present.

Line Rx K1 Byte: Displays the bit assignments for the K1 byte carried on the protection line. This byte is used to indicate a request by a channel for a switch action.

See Telcordia specification GR-253-CORE for further details.

Line Rx K2 Byte: Displays the bit assignments for the K2 byte carried on the protection line. This byte is used to indicate the bridging actions performed at the LTE, and the provisioned architecture and mode of operation.

See Telcordia specification GR-253-CORE for further details.

Signal Failure: (display field)

Displays the status of the threshold checks for Signal Failure (SF). If On, SF is being declared (threshold has been surpassed) and switchover may occur. However, if a higher priority command is in effect, switchover will not occur. See Table 36 for Redundancy Priorities.



Table 4-18. APS Status Menu Field Descriptions (Cont.)

Field Description

Signal Degrade: (display field)

Displays the status of the threshold checks for Signal Degrade (SD). If On, SD is being declared (threshold has been surpassed). If this is set to On, then the SF display is irrelevant since the lower SD threshold will already have been surpassed. Switchover may then occur, however, if a higher priority command is in effect, switchover will not occur. See Table 4-20 for Redundancy Priorities.

System Rx Request Code: (display field)

Displays the APS signaling received from the other card in the redundancy set, which is also sent out to the line. Will be one of the following:

• Lockout of Protection

• Forced Switch

• SignalFailure(Low Priority)

• SignalDegrade(Low Priority)

• Manual Switch

• Do Not Revert

• No Request

• Hardware Failure

Note: System messages are used by the working and protection modules to communicate on the internal DXC-100 backplane. This is not necessarily what is sent out on the network.

System Tx Request Code: (display field)

Displays the APS signaling sent to the other card in the redundancy set, which is also sent out to the line. Will be one of the following:

• Lockout of Protection

• Forced Switch

• SignalFailure(Low Priority)

• SignalDegrade(Low Priority)

• Manual Switch

• Do Not Revert

• No Request

• Hardware Failure

Note: System messages are used by the working and protection modules to communicate on the internal DXC-100 backplane. This is not necessarily what is sent out on the network.

User Pending Request: (display field)

Displays the last user request that was sent via screen command.

Note: Once a Forced Switch Request or Manual Switch Request has been sent, a clear command must then be issued. If this is not done, automatic switchover will not occur if link fails.

User [R]equest: (hot key) Used to access the APS Request Message Menu in order to make changes to APS status.

K1, K2 Byte D[e]scription: (hot key)

Used to access a 3-page display that provides descriptions for the possible settings for the K1 and K2 bytes.



Redundancy Controls (User Request)

The APS Request Menu allows you to make changes to APS Redundancy status.

Navigation:

DSTM-1 Main Menu

↓

1+1 Redundancy ↓

APS Control/Status ↓

User [R]equest

APS Request Menu ----------------

Current Request.: SF-Low Priority New Request.....: No Request [N]o Req. [C]lear Req. [F]orced Switch To Working [D] FS To Protection [L]ockout [M]anual Switch To Working [J] MS To Protection

Figure 4-47. APS Request Menu

1. Press the appropriate hot key to initiate an APS request. Descriptions for each field or option on the APS Request Menu are supplied in Table 4-19.

If a Forced Switch Command has been selected, the following prompt appears:



APS Request Menu ----------------

****************************************************************** * * * -MESSAGE!- * * * * * * FS will take place regardless of the Protection card's status. * * * * * * Are you sure (Y/N)? * * * ****************************************************************** [C]lear Req. [F]orced Switch To Working [D] FS To Protection [L]ockout [M]anual Switch To Working [J] MS To Protection

Figure 4-48. APS Switchover Prompt

Use the Forced Switch commands with caution. These commands disregard APS (1+1 Redundancy) status information. If the offline module has Signal Failure or Signal Degrade status, switchover will take place, to be followed immediately by another switchover caused by APS. Data errors will occur for the duration of switchover/switchback. Use the 1+1 Redundancy/APS Status/Requests for more controlled link management.

Again, descriptions for each field or option on the APS Request Menu are supplied in Table 4-19.

Table 4-19. APS Request Menu Field Descriptions

Field Description

Current Request: The last APS Signaling request that was sent.

New Request: The pending APS Signaling request that will be sent when the user exits the screen and presses Y at the prompt to confirm the request.

No Request: Sends a “No Request”, unless a request of equal or higher priority is in effect.

Clear Request: Clears the last request that was sent. This is the only command that can override a lockout.

Forced Switch to Working From the working DSTM-1 module, forces a switchover from the standby DSTM-1 module to the working DSTM-1 module no matter what the state of the working module. Switches the specified protection channel to the working line unless a request of equal or higher priority is in effect by issuing a Forced Switch request.

Caution



Table 4-19. APS Request Menu Field Descriptions (Cont.)

Field Description

Forced Switch to Protection From the working DSTM-1 module, forces a switchover from the active DSTM-1 module to the standby DSTM-1 module no matter what the state of the standby module. Switches the specified working channel to the protection line unless a request of equal or higher priority is in effect by issuing a Forced Switch request.

Lockout Locks out switchover to protection card. If already online, can only be set when working card is online.

Manual Switch to Working From the working DSTM-1 module, switches the specified protection channel to the working line unless a request of equal or higher priority is in effect by issuing a Manual Switch request.

Manual Switch to Protection From the working DSTM-1 module, switches the specified working channel to the protection line unless a request of equal or higher priority is in effect by issuing a Manual Switch request.

Redundancy Priorities

Table 4-20 summarizes the priorities for link-level (and module-level) redundancy requests. It is directly based on the SDH/SONET-defined K1 (bits 1 through 4) where 1111 is the highest and 0000 is the lowest priority. The K1 (and K2) byte descriptions can also be viewed via the menu system. Refer to the next subsection for details.

Table 4-20. Redundancy Priorities

K1 Byte (bits 1-4) Internal/External Requests

1111 Lockout of Protection

1110 Force Switch

1101 N/A – Module Fault (ERI Implementation)

1100 Signal Fault (1+1 APS)

1011 N/A

1010 Signal Degrade (1+1 APS)

1001 Not Used

1000 Manual Switch

111 Not Used

110 N/A

101 Not Used

100 N/A

11 Not Used

10 Reverse Request

1 Do Not Revert

0 No Request



K1 and K2 Byte Descriptions

This is a 3-page display that provides descriptions of the possible settings for the K1 and K2 bytes.

Navigation:

DSTM-1 Main Menu

↓

1+1 Redundancy ↓

APS Control/Status ↓

K1, K2 Byte D[e]scription

K1 & K2 Byte Description ------------------------

K1 Byte : --------- Bits 1,2,3,4 : Request Code. Bits 5,6,7,8 : Channel making the request. Request Codes(in order of priority) : 1111 Lockout of Protection 1110 Forced Switch 1101 SignalFailure(High Priority) 1100 SignalFailure(Low Priority) 1011 SignalDegrade(High Priority) 1010 SignalDegrade(Low Priority) 1001 Not used 1000 Manual Switch 0111 Not used 0110 Wait To Restore [N]ext Page

Figure 4-49. K1 and K2 Byte Description Display (Page 1)

Press N to view the next page, or press X to exit the screen.



K1 & K2 Byte Description --------------------------

0101 Not used 0100 Exercise 0011 Not used 0010 Reverse request 0001 Do Not Revert 0000 No Request Channel Number Codes : 0000 : Null channel=>SF and SD requests apply to 'P' line. On 1+1 systems, Forced and Manual Switch requests apply to 'P' line. 0001 through 1110 : Working Channels=>Only value of '1' is applicable in 1+1 architecture. 1111 : Extra Traffic Channel=>Only applicable for 1:n architecture. [N]ext Page


K1 & K2 Byte Description -------------------------

K2 Byte : --------- Bits 1,2,3,4 : Channel Number=>Same as bits 5,6,7,8 of K1 Byte. Bit 5 : Indication of the architecture. '0'=> 1+1 '1'=> 1:n Bits 6,7,8 : Mode of operation. 101 - Bidirectional. 100 - Unidirectional. Reserved: 000, 001, 010, 011, 110, 111. [N]ext Page




1+1 Redundancy Status Display

Navigation:

DSTM-1 Main Menu

↓

1+1 Redundancy ↓

Device Redundancy Status

1+1 Redundancy Status Menu --------------------------

State Change Count ---------------------

Frame Sync Pulse.............: OK 0 System Clock.................: OK 0 Backplane Timeslot Management: OK 0 Communication with System Mgr: OK 0 Rear Card....................: OK 0 Framers......................: OK 0 APS Access Verify ...........: OK 0 [C]lear counters

Figure 4-52. 1+1 Redundancy Status Display

The 1+1 Redundancy Status Display is a read-only screen. The only action that can be accomplished here is pressing C to clear the counters or X to exit the screen. Descriptions for each field on this screen are supplied in Table 4-21.

Table 4-21. 1+1 Redundancy Status Display Field Descriptions

Field Description

State (column) A display of On in this column next to any of the status entries indicates that an error condition currently exists in the path. A display of Off indicates that the error condition is not present, but if the errored seconds field has a count, then this alarm has occurred sometime in the past (since the last time that the counter was cleared).

Change Count (column) The display count in this column indicates the quantity of seconds that an error condition for the associated field been present. Press C to clear the counters.

Frame Sync Pulse: (display field) If the state is Missing, it indicates a loss of synchronization error.


X-Link Status Display (X-Link Modules Only) 4-61

Table 4-21. 1+1 Redundancy Status Display Field Descriptions (Cont.)

Field Description

System Clock: (display field) Indicates the status of the system clock.

Backplane Timeslot Management: (display field)

If the state is Invalid, it indicates that the backplane is flooded with more timeslots than the card can handle.

Communication with System Mgr: (display field)

If the state is Lost, it indicates that the device has not received any messages from the DSMC.2 for more than one minute.

Note: If the state reads “Lost,” you most likely have problems with your DSTM-1 module, not the DSMC.2.

Rear Card: (display field) If the state is Missing, it indicates the rear card is not being detected. The device will reset after the rear card is detected again.

Framers: (display field) If the state is Bad, it indicates one of the T1/E1 framers or the DSTM-1 mapper is bad (hardware failure).

APS Access Verify: (display field) Indicates that the APS messages are able/not able to be passed through the backplane.

4.4 X-Link Status Display (X-Link Modules Only)

The X-Link Status Display allows you to view X-Link parameters and status.

Navigation:


XLinks Status

XLinks Status --------------

Errored Bert: Test Test Errored Seconds: Seconds Sig Dat Duration Sig Bert Data Bert -------- --- --- --------- --------- ---------- XLINK Top 0 No No 0 0 0 XLINK Bottom 0 No No 0 0 0 XLink Pair State : Active - One XLink cable in use without errors XLink in use.....: Top Nest Number......: 3 Cabling Mismatch.: No mismatch [C]lear counters

Figure 4-53. XLinks Status Display


4-62 X-Link Status Display (X-Link Modules Only)

The XLinks Status Display is a read-only screen. The only action that can be accomplished here is pressing C to clear the counters. Descriptions for each field on this screen are supplied in Table 4-22.

Table 4-22. XLinks Status Display Field Descriptions

Field Description

Errored Seconds: (column) Total number of errored seconds detected on the XLink.

Bert: Signal: (column) Indicates Yes if signal BERT is enabled, No if it is disabled.

Bert: Dat: (column) Indicates Yes if data BERT is enabled, No if it is disabled.

Test Duration: (column) Displays the number of seconds that the test has been running.

Test Errored Seconds - Sig Bert: (column)

Displays the number of seconds that the signal BERT has been in error.

Test Errored Seconds - Data Bert: (column)

Displays the number of seconds that the data BERT has been in error.

XLink Pair State: (display field) Displays the state of the X-Link Pair as one of the following: Active - One XLink cable in use without errors.

• Active - Errors in used XLink, or Cable/Nest-id mismatch.

• Active - Bad Xlink Id.

• Active, Configured and actual XLink Nest #s mismatch.

• Mismatch: Configured and actual Xlink nest numbers do not match.

• Standby.

• Standby, Configured and actual XLink Nest #s mismatch.

• Unknown.

XLink in use: (display field) Displays the X-Link port currently in use - Top, Bottom, or None.

Nest Number: (display field) Nest Number where the module physically resides.

Cabling Mismatch: (display field) Mismatch indicates that X-Link cables are connected incorrectly; reports type of mismatch such as Nest Number Mismatch.


About Display 4-63

4.5 About Display

The About Display displays version, release date, and checksum information for the DSTM-1 module software. It also shows version information for the DSTM-1 module hardware.

Navigation:


About

About STM1 Module

Version..........: 4.0f Release Date.....: June 11, 2003 Checksum.........: ECC1 Virtex Src Rev...: omdsxln.010 Virtex Dest Rev..: omddxln.013 Front Card Type..: STM1 Front Card Rev...: 3 Rear Card Type...: Optical 155(IR) Rear Card Rev....: 0

Figure 4-54. About DSTM-1 Module Display

The About DSTM-1 Module Display is a read-only screen. The fields contained in this display are described in Table 4-23.


4-64 About Display

Table 4-23. About DSTM-1 Module Display Field Descriptions

Field Description

Version: (display field) Displays the software version currently residing in the DSTM-1 module’s flash memory.

Release Date: (display field) Displays the date of module software release.

Checksum: (display field) Displays the sum of all bytes in the DSTM-1 module’s flash memory at power up. Also used to identify software version.

Virtex Src Rev: (display field) Displays the FPGA Logic Design revision revel for the source.

Virtex Dest Rev: (display field) Displays the FPGA Logic Design revision level for the destination.

Front Card Type: (display field) Displays the type of application module in the system.

Front Card Rev: (display field) Displays the application module’s hardware revision level.

Rear Card Type: (display field) Displays the type of interface module in the system.

Rear Card Rev: (display field) Displays the interface module’s hardware revision level.

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