User Guide SLF-H_253255964-D_Ed.04 Para Imprimir

Microwave Radio Link

SLF-H Release 2.2

6 GHz 38 GHz

Installation and Operation Manual

Page 0-2

SLF-H Installation and Operation Manual 253 255 964-D

WARNINGSagemcom carefully monitors all technical changes and strives continuously to improve its products for the benefit of its customers. It therefore reserves the right to change its documentation without prior notice. All trademarks are registered by their owners.

HANDBOOK CHANGE LISTENVIRONMENT

(Each new edition supersedes the previous edition)

Preservation of the environment as part of a sustainable development logic is an essential concern of Sagemcom. The desire of Sagemcom is to operate systems observing the environment and consequently it has decided to integrate environmental performances in the life cycle of its products, from manufacturing to commissioning, use and elimination. Page All pages PACKAGING: The presence of the logo (green dot) means that a contribution is paid to an approved national organisation to improve packaging recovery and recycling infrastructures. 1.8, 2.4.1, 6.5 To facilitate recycling, please respect the sorting rules set up locally for this kind of waste.

No.

Date

Change description

253 255 964-A

September 2009

Initial release in original issue

(3 000 337 386 R11 000-01)

253 255 964-B

November 2009

ACM configuration

(3 000 337 386 R11 000-02) All pages BATTERIES: If your product contains batteries, they must be disposed of at appropriate collection points. All pages THE PRODUCT: The crossed-out waste bin stuck on the product (or on its accessories) means that the product belongs to the family of electrical and electronic equipment. In this respect, the European regulations ask you to dispose of it selectively: x At sales points in the event of the purchase of similar equipment. x At the collection points made available to you locally (drop-off centre, selective collection, etc.).

253 255 964-C

June 2010

Release 2.1 bis

(3 000 337 386 R11 000-03)

253 255 964-D

February 2011

Release 2.2

(3 000 337 386 R11 000-04)

In this way you can participate in the re-use and upgrading of WEE (Waste Electrical and Electronic Equipment), which can have an effect on the environment and human health.


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3. INSTALLATION ........................................................................................................................................................ 3-1

TABLE OF CONTENTS

1. SYSTEM DESCRIPTION .......................................................................................................................................... 1-1

1.1 - INTRODUCTION ...................................................................................................................................................... 1-1 1.2 - DESCRIPTION.......................................................................................................................................................... 1-2 1.2.1 - System composition ....................................................................................................................... 1-2 1.2.2 - IDU version ..................................................................................................................................... 1-3 1.2.3 - Modem version ............................................................................................................................... 1-3 1.2.4 - Fan version ..................................................................................................................................... 1-3 1.2.5 - Optional MUX64 SPDH version...................................................................................................... 1-3 1.2.6 - ODU Versions................................................................................................................................. 1-4 1.3 - SLF-H FEATURES ................................................................................................................................................... 1-6 1.3.1 - SLF-H block diagrams .................................................................................................................... 1-6 1.3.2 - IDU features.................................................................................................................................... 1-7 1.3.3 - Modem features.............................................................................................................................. 1-7 1.3.4 - ODU features.................................................................................................................................. 1-8 1.3.5 - MUX64 SPDH shelf features .......................................................................................................... 1-8 1.4 - PROTECTED CONFIGURATIONS ............................................................................................................................... 1-9 1.4.1 - 1+1 Hot Stand By ........................................................................................................................... 1-9

3.1 - INTRODUCTION ...................................................................................................................................................... 3-1 3.2 - UNPACKING THE EQUIPMENT ................................................................................................................................. 3-1 3.3 - IDU INSTALLATION................................................................................................................................................ 3-2 3.4 - ANTENNA INSTALLATION....................................................................................................................................... 3-2 3.4.1 - Antenna mount ............................................................................................................................... 3-3 3.4.2 - Antenna Installation ........................................................................................................................ 3-3 3.5 - ODU INSTALLATION .............................................................................................................................................. 3-4 3.5.1 - 1+0 Configuration with integrated antenna..................................................................................... 3-4 3.5.2 - 1+0 Configuration with pole mount and standard antenna............................................................. 3-5 3.5.3 - "Hot standby" 1+1 configuration with coupler and integrated antenna .......................................... 3-5 3.5.4 - 1+1 hot standby configuration with remote mounted coupler and standard antenna .................... 3-6 3.5.5 - 1+1 space diversity configuration with 2 antennas......................................................................... 3-7 3.5.6 - 1+1 frequency diversity configuration with remote mounts and dual polarized antenna ............... 3-7 3.5.7 - 1+1 frequency diversity configuration with 2 antennas .................................................................. 3-7 3.5.8 - 2+0 frequency diversity configuration with remote mounts and dual polarized antenna ............... 3-7 3.5.9 - 2+0 frequency diversity configuration with 2 antennas .................................................................. 3-7 3.5.10 - 2+0 XPIC configuration with remote mounts and dual polarized antenna ................................... 3-7 3.6 - INSTALLING THE IDU TO ODU COAXIAL CABLE ................................................................................................... 3-8 3.7 - CONNECTING THE IDU TO EXTERNAL EQUIPMENT ................................................................................................. 3-9 3.7.1 - IDU Front panel accesses .............................................................................................................. 3-9 3.7.2 - Description of accesses and connectors...................................................................................... 3-10

1.4.1.1 - Transmitter operation & performances ...................................................................................................................... 1-9 1.4.1.2 - Receiver operation & performances ........................................................................................................................ 1-10

1.4.2 - 1+1 Space diversity ...................................................................................................................... 1-10

1.4.2.1 - Transmitter operation & performances .................................................................................................................... 1-10 1.4.2.2 - Receiver operation & performances ........................................................................................................................ 1-11

3.7.2.1 - "POWER" access 4-pin connector ........................................................................................................................ 3-10 3.7.2.2 - The connector pinout is as follows: ......................................................................................................................... 3-10 3.7.2.3 - "Alarms in/out" access High density 15-pin DB connector .................................................................................. 3-10 3.7.2.4 - "Mgmt" and "Wayside" Ethernet ports .................................................................................................................... 3-12 3.7.2.5 - Gigabit Ethernet ports "GbE1" to "GbE4" ............................................................................................................... 3-12 3.7.2.6 - G703 2 Mbit/s ports - 44-pin DB connectors........................................................................................................... 3-13

1.4.3 - 1+1 Frequency diversity ............................................................................................................... 1-11

1.4.3.1 - Transmitter operation & performances .................................................................................................................... 1-12 1.4.3.2 - Receiver operation & performances ........................................................................................................................ 1-12

3.7.3 - Cable references for SLF-H.......................................................................................................... 3-16 3.7.4 - Module references for SLF-H ....................................................................................................... 3-18 3.8 - MUX64 SPDH UNIT (OPTIONAL) ........................................................................................................................ 3-18 3.8.1 - Front panel accesses of MUX 64 SPDH shelf.............................................................................. 3-19 3.8.2 - Description of accesses and connectors...................................................................................... 3-193.8.2.1 - "POWER" access 4-pin connector ........................................................................................................................ 3-19 3.8.2.2 - G703 2 Mbit/s ports - 78-pin DB connectors........................................................................................................... 3-19

1.5 - ACM CONFIGURATION ......................................................................................................................................... 1-13 1.6 - 2+0 CONFIGURATIONS .......................................................................................................................................... 1-17 1.6.1 - 2+0 FD .......................................................................................................................................... 1-18 1.6.2 - 2+0 XPIC ...................................................................................................................................... 1-19

2. GIGABIT ETHERNET FUNCTION ........................................................................................................................ 2-1

3.8.3 - MUX32 SPDH version .................................................................................................................. 3-21 3.8.4 - Cable References for MUX64 SPDH shelf................................................................................... 3-22 3.9 - POWERING UP THE SYSTEM .................................................................................................................................. 3-23 4. COMMISSIONING CONFIGURATION AND TESTS .......................................................................................... 4-1

2.1 - INTRODUCTION ...................................................................................................................................................... 2-1 2.2 - PORTS .................................................................................................................................................................... 2-1 2.2.1 - Definition......................................................................................................................................... 2-1 2.2.2 - Jumbo frames ................................................................................................................................. 2-1 2.2.3 - Available Ethernet radio bandwidth (ACM) .................................................................................... 2-1 2.3 - TOPOLOGIES ........................................................................................................................................................... 2-2 2.3.1 - 4 EPLINE mode .............................................................................................................................. 2-2 2.3.2 - Advanced mode.............................................................................................................................. 2-2

2.3.2.1 - EPLAN mode ............................................................................................................................................................ 2-2 2.3.2.2 - EVPLINE/EVPLAN modes....................................................................................................................................... 2-2

2.4 - SERVICE QUALITY (QOS) ....................................................................................................................................... 2-3 2.4.1 - Generalities..................................................................................................................................... 2-3 2.4.2 - Frames classification ...................................................................................................................... 2-3 2.4.3 - Metering.......................................................................................................................................... 2-4 2.4.4 - Congestion handling....................................................................................................................... 2-4

2.4.4.1 - Description................................................................................................................................................................. 2-4 2.4.4.2 - Limitation of port bandwidth ..................................................................................................................................... 2-4 2.4.4.3 - Flow control............................................................................................................................................................... 2-4 2.4.4.4 - Drop of frames........................................................................................................................................................... 2-5 2.4.4.4.1 - Principe................................................................................................................................................................ 2-5 2.4.4.4.2 - Output queues (traffic classes)............................................................................................................................. 2-5 2.4.4.4.3 - Control of flows rate (policing) ........................................................................................................................... 2-5 2.4.4.4.4 - CIR/PIR values .................................................................................................................................................... 2-5 2.4.4.4.5 - Shaping of "Very High Priority" traffic class ...................................................................................................... 2-6

4.1 - INTRODUCTION ...................................................................................................................................................... 4-1 4.2 - CONFIGURING EQUIPMENT IP ADDRESSES .............................................................................................................. 4-1 4.3 - PILOT SOFTWARE AND IP CONNECTIVITY ............................................................................................................... 4-6 4.3.1 - Installing the software Pilot Launcher............................................................................................. 4-6 4.3.2 - Installing the Pilot software............................................................................................................. 4-7 4.3.3 - IP connectivity................................................................................................................................. 4-8 4.3.4 - Launch Auto Pilot with the Pilot Launcher:..................................................................................... 4-9 4.3.5 - Starting a Pilot session ................................................................................................................. 4-10 4.4 - LINK PRELIMINARY CONFIGURATION ................................................................................................................... 4-11 4.4.1 - Setting the parameters of each IDU ............................................................................................. 4-11 4.4.2 - Antenna alignment........................................................................................................................ 4-16 4.4.3 - Antenna alignment in XPIC mode ................................................................................................ 4-21 4.5 - TESTS AND MEASUREMENTS REQUIRED ................................................................................................................ 4-23 4.5.1 - Frequency Scan............................................................................................................................ 4-23 4.5.2 - Receive signal level...................................................................................................................... 4-23 4.5.3 - Giga Ethernet transmission test ................................................................................................... 4-24 4.5.4 - 2 Mbit/s tributary test (optional) .................................................................................................... 4-28 4.5.5 - Wayside test (optional) ................................................................................................................. 4-29 4.5.6 - Alarm relay test (optional)............................................................................................................. 4-304.5.6.1 - Simulating an IDU Alarm........................................................................................................................................ 4-30 4.5.6.2 - Simulating an ODU Alarm ...................................................................................................................................... 4-31 4.5.6.3 - Simulating a Gigabit Ethernet Alarm....................................................................................................................... 4-31 4.5.6.4 - Simulating a tributary alarm .................................................................................................................................... 4-31

2.5 - MAC FILTERING .................................................................................................................................................... 2-6 2.6 - COUNTERS ............................................................................................................................................................. 2-6


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4.5.6.5 - Simulating an RSL alarm......................................................................................................................................... 4-31 4.5.6.6 - Testing an external alarm......................................................................................................................................... 4-31 4.5.6.7 - Testing the alarm outputs (relays)............................................................................................................................ 4-32

4.5.7 - Testing 1+1 configuration (optional) ............................................................................................. 4-32 4.5.8 - Quality measurement ................................................................................................................... 4-34 4.5.9 - Recording configuration information............................................................................................. 4-34

5. FINAL LINK CONFIGURATION............................................................................................................................ 5-1

5.1 - ENTERING SITE NAMES ........................................................................................................................................... 5-1 5.2 - SETTING THE DATE AND TIME................................................................................................................................. 5-1 5.3 - CONFIGURING GIGABIT ETHERNET ........................................................................................................................ 5-2 5.3.1 - Notations used in this manual ........................................................................................................ 5-2 5.3.2 - Ethernet Port configuration............................................................................................................. 5-2

5.3.2.1 - Physical configuration ............................................................................................................................................... 5-3 5.3.2.2 - Advanced configuration............................................................................................................................................. 5-3

5.3.3 - QOS Global configuration............................................................................................................... 5-5 5.3.4 - QOS & services configuration ........................................................................................................ 5-6

5.3.4.1 - Service types.............................................................................................................................................................. 5-7 5.3.4.1.1 - 4 EPLINE mode................................................................................................................................................... 5-8 5.3.4.1.2 - Advanced mode ................................................................................................................................................... 5-8 5.3.4.1.3 - EPLAN ................................................................................................................................................................ 5-8 5.3.4.1.4 - EVPLINE/EVPLAN............................................................................................................................................ 5-8 5.3.4.2 - Port modes and tagging possibilities.......................................................................................................................... 5-9 5.3.4.2.1 - UNI-N................................................................................................................................................................ 5-10 5.3.4.2.2 - I-NNI ................................................................................................................................................................. 5-10 5.3.4.2.3 - E-NNI ................................................................................................................................................................ 5-10 5.3.4.2.4 - EtherType .......................................................................................................................................................... 5-11 5.3.4.3 - QOS parameters....................................................................................................................................................... 5-11 5.3.4.3.1 - Available classes of service ............................................................................................................................... 5-11 5.3.4.3.2 - Strict priority shaping ........................................................................................................................................ 5-12 5.3.4.3.3 - Metering and policing........................................................................................................................................ 5-12 5.3.4.3.4 - Bandwidth computation examples..................................................................................................................... 5-15 5.3.4.4 - Services and QOS configuration.............................................................................................................................. 5-16 5.3.4.4.1 - Classification principle ...................................................................................................................................... 5-16 5.3.4.4.2 - Available classification types ............................................................................................................................ 5-18 5.3.4.4.3 - User predefined classifications .......................................................................................................................... 5-23 5.3.4.4.4 - PCP encoding .................................................................................................................................................... 5-25

5.3.5 - Other features............................................................................................................................... 5-27

6.2.3 - "File / IDU Configuration / Local or Remote / Load" menu ............................................................. 6-4 6.2.4 - "File / Boot Firmware / Local or Remote" menu ............................................................................. 6-5 6.2.5 - "File / IDU Firmware / Local or Remote" menu .............................................................................. 6-5 6.2.6 - "File / ODU Firmware / Local or Remote" menu............................................................................. 6-6 6.2.7 - "File / Quit" menu............................................................................................................................ 6-6 6.3 - SESSION MENU ....................................................................................................................................................... 6-6 6.4 - ALARMS MENU ....................................................................................................................................................... 6-7 6.4.1 - "Alarms / View / Local or Remote" menu........................................................................................ 6-7 6.4.2 - "Alarms / Text Log / Local or Remote" menu ................................................................................. 6-8 6.4.3 - "Alarms /Graphical Log / Local or Remote" menu.......................................................................... 6-9 6.5 - CONFIGURATION / ALARMS MENU ......................................................................................................................... 6-9 6.6 - CONFIGURATION / MANAGEMENT NETWORK / ETHERNET PORTS AND RADIO CHANNEL / LOCAL OR REMOTE MENU ..................................................................................................................................................................................... 6-10 6.6.1 - Description of the Management network...................................................................................... 6-10 6.6.2 - Network configuration................................................................................................................... 6-12 6.6.3 - Wayside configuration .................................................................................................................. 6-13 6.7 - CONFIGURATION / MANAGEMENT NETWORK /ROUTES / LOCAL OR REMOTE MENU ............................................ 6-14 6.8 - CONFIGURATION / GIGABIT ETHERNET MENU ...................................................................................................... 6-15 6.9 - CONFIGURATION / PROTECTION / LOCAL OR REMOTE MENU ................................................................................ 6-15 6.10 - CONFIGURATION / ATPC / LOCAL OR REMOTE MENU........................................................................................ 6-16 6.11 - CONFIGURATION /E1 TRIBUTARIES / LOCAL OR REMOTE MENU ........................................................................ 6-16 6.12 - CONFIGURATION / HARDWARE INVENTORY / LOCAL OR REMOTE MENU ........................................................... 6-16 6.13 - CONFIGURATION / PILOT MENU .......................................................................................................................... 6-17 6.14 - CONFIGURATION / RESET TO DEFAULT DATABASE / LOCAL OR REMOTE MENU ................................................. 6-17 6.15 - PERFORMANCE / RSL / LOCAL OR REMOTE MENU ............................................................................................. 6-17 6.16 - PERFORMANCE / LINK STATISTICS / LOCAL OR REMOTE MENU ......................................................................... 6-18 6.17 - PERFORMANCE / GIGABIT ETHERNET / GENERAL ETHERNET STATISTICS / LOCAL OR REMOTE MENU............... 6-19 6.18 - PERFORMANCE / GIGABIT ETHERNET / METERING STATISTICS / LOCAL OR REMOTE MENU .............................. 6-20 6.19 - PERFORMANCE / WAYSIDE / LOCAL OR REMOTE MENU ..................................................................................... 6-20 6.20 - PERFORMANCE / CLEAR BER STATS / LOCAL OR REMOTE MENU ...................................................................... 6-21 6.21 - PERFORMANCE / CLEAR/RESET ALL .................................................................................................................. 6-22 6.22 - MAINTENANCE / TX/RX FORCING MENU ............................................................................................................ 6-22 6.23 - MAINTENANCE / LOOPBACKS MENU .................................................................................................................. 6-23 6.24 - MAINTENANCE / FREQUENCY SCAN / CHANNEL 1 OR CHANNEL 2 MENU ........................................................... 6-23 6.25 - MAINTENANCE / TRY TO UNMUTE REMOTE / LOCAL OR REMOTE MENU ............................................................ 6-24 6.26 - MAINTENANCE / RESTRICTION / LOCAL OR REMOTE MENU ............................................................................... 6-24 7. TROUBLESHOOTING GUIDE................................................................................................................................ 7-1

5.3.5.1 - Flow control............................................................................................................................................................. 5-27 5.3.5.2 - Mac filtering ............................................................................................................................................................ 5-28 5.3.5.3 - Fast link shutdown................................................................................................................................................... 5-29 5.3.5.4 - FDB management .................................................................................................................................................... 5-29 5.3.5.5 - Ethernet with 2+0 XPIC or FD modes..................................................................................................................... 5-30 5.3.5.6 - Ethernet with ACM.................................................................................................................................................. 5-30

5.4 - CONFIGURING 2 MBIT/S PORTS............................................................................................................................. 5-32 5.5 - CONFIGURING THE ALARM THRESHOLDS .............................................................................................................. 5-34 5.5.1 - BER and ACM alarm thresholds................................................................................................... 5-34 5.5.2 - RSL alarm threshold..................................................................................................................... 5-34 5.5.3 - Ethernet bitrate alarm threshold ................................................................................................... 5-35 5.6 - CONFIGURING THE ALARMS ................................................................................................................................. 5-36 5.6.1 - General parameters...................................................................................................................... 5-36 5.6.2 - "IDU" tab ....................................................................................................................................... 5-37 5.6.3 - "Modem" tab ................................................................................................................................. 5-38 5.6.4 - "Radio" tab.................................................................................................................................... 5-38 5.6.5 - "Tributaries" tab ............................................................................................................................ 5-40 5.6.6 - "Gigabit Ethernet" tab ................................................................................................................... 5-41 5.6.7 - "Fans" tab ..................................................................................................................................... 5-41 5.6.8 - Default configuration of the alarm relays...................................................................................... 5-43 5.7 - CONFIGURING THE AUTOMATIC TRANSMIT POWER CONTROL (ATPC) ............................................................... 5-43 5.8 - SPECIFIC CONFIGURATIONS FOR 1+1 SYSTEMS ..................................................................................................... 5-44

6. OPERATION PILOT............................................................................................................................................... 6-1

6.1 - HELP MENU ............................................................................................................................................................ 6-3 6.2 - FILE MENU ............................................................................................................................................................. 6-4 6.2.1 - "File / System Report" menu .......................................................................................................... 6-4 6.2.2 - "File / IDU Configuration / Local or Remote / Save" menu............................................................. 6-4Page 0-7

7.1 - INTRODUCTION ...................................................................................................................................................... 7-1 7.2 - VISUAL INSPECTION ............................................................................................................................................... 7-1 7.3 - TROUBLESHOOTING PROCEDURE ............................................................................................................................ 7-2 7.3.1 - Describe the symptom.................................................................................................................... 7-2 7.3.2 - Isolate the problem ......................................................................................................................... 7-2 7.3.3 - Fix the problem ............................................................................................................................... 7-2 7.4 - DESCRIPTION OF IDU FRONT PANEL LEDS ............................................................................................................. 7-2 7.4.1 - IDU Leds......................................................................................................................................... 7-3 7.4.2 - Modem Leds ................................................................................................................................... 7-3 7.4.3 - Leds of the MUX64 SPDH shelf ..................................................................................................... 7-3 7.5 - ALARMS MANAGED BY THE PILOT ......................................................................................................................... 7-4 7.5.1 - Alarm summary screen................................................................................................................... 7-4 7.5.2 - Direct and indirect alarms............................................................................................................. 7-11 7.5.3 - Event log....................................................................................................................................... 7-11 7.6 - TYPICAL SLF-H PILOT SCREENS IN CASE OF PROBLEM ........................................................................................ 7-11 7.6.1 - No IDU-Pilot software communication.......................................................................................... 7-11 7.6.2 - No local equipment, no remote equipment................................................................................... 7-11 7.6.3 - No local radio................................................................................................................................ 7-12 7.6.4 - No remote radio ............................................................................................................................ 7-12 7.6.5 - Low RSL ....................................................................................................................................... 7-13 7.6.6 - Low transmit power ...................................................................................................................... 7-13 7.6.7 - Link established correctly but with some alarms .......................................................................... 7-14 7.6.8 - Normal link no alarms................................................................................................................... 7-14 7.7 - REPLACING AN ODU............................................................................................................................................ 7-14 7.8 - REPLACING A MODEM .......................................................................................................................................... 7-15Page 0-8 SLF-H Installation and Operation Manual 253 255 964-D


7.9 - REPLACING AN IDU ............................................................................................................................................. 7-15 7.10 - REPLACING A FAN MODULE ............................................................................................................................. 7-15 7.11 - REPLACING A MUX64 SPDH SHELF .................................................................................................................. 7-15

APPENDIX 1- SLF-H SPECIFICATIONS .......................................................................................................................1

FIGURES

GENERAL CHARACTERISTICS ..............................................................................................................................................1 TRANSMISSION CHARACTERISTICS......................................................................................................................................2 RECEPTION CHARACTERISTICS............................................................................................................................................3 GIGABIT ETHERNET / 2 MBIT/S ACCESS ..............................................................................................................................4 ALARMS, WAYSIDE AND NETWORK MANAGEMENT INTERFACES .........................................................................................4 MECHANICAL CHARACTERISTICS ........................................................................................................................................4 POWER CONSUMPTION ........................................................................................................................................................5 ENVIRONMENTAL CHARACTERISTICS..................................................................................................................................5 HEALTH CHARACTERISTICS ................................................................................................................................................5

Figure 1.1 - SLF-H 1+0 terminal ....................................................................................................................................... 1-2 Figure 1.2 - SLF-H 1+1 Terminal (HSB) .......................................................................................................................... 1-3 Figure 1.3 - Minimum and maximum channel frequencies ............................................................................................... 1-4 Figure 1.4 - SLF-H block diagram..................................................................................................................................... 1-6 Figure 1.5 - 1+1 Hot Stand By configuration .................................................................................................................... 1-9 Figure 1.6 - 1+1 Space diversity configuration................................................................................................................ 1-10 Figure 1.7 - 1+1 Frequency diversity configuration ........................................................................................................ 1-11 Figure 3.1 - IDU installation.............................................................................................................................................. 3-2 Figure 3.2 - ODU SLF-H with integrated antenna............................................................................................................. 3-4 Figure 3.3 - Polarization setting in 1+0 configuration ....................................................................................................... 3-4 Figure 3.4 - ODU SLF-H mounted on pole ....................................................................................................................... 3-5 Figure 3.5 - SLF-H 1+1 configuration with coupler and integrated antenna ..................................................................... 3-6 Figure 3.6 - Polarization setting on 1+1 coupler................................................................................................................ 3-6 Figure 3.7 - Front panel of the SLF-H IDU in 1+0 configuration...................................................................................... 3-9 Figure 3.8 - Front panel of the SLF-H IDU in 1+1 configuration...................................................................................... 3-9 Figure 3.9 - "Serial" connector pinout ............................................................................................................................. 3-10 Figure 3.10 - Relay output electrical interface................................................................................................................. 3-11 Figure 3.11 - External alarm electrical interface.............................................................................................................. 3-11 Figure 3.12 - Cables for a terminal station....................................................................................................................... 3-16 Figure 3.13 - Cables for a relay station ............................................................................................................................ 3-16 Figure 3.14 - Front panel of MUX64 SPDH Unit............................................................................................................ 3-18 Figure 3.15 - SLF-H 1+1 IDU ......................................................................................................................................... 3-23 Figure 4.1 - SLF-H ODU RSL voltage ............................................................................................................................ 4-17 Figure 4.2 - Antenna alignment ....................................................................................................................................... 4-18 Figure 4.3 - Main Pilot Screen for a 1+0 configuration Fixed modulation................................................................... 4-18 Figure 4.4 - Main Pilot Screen for a 1+0 configuration ACM modulation................................................................... 4-19 Figure 4.5 - Main Pilot Screen for a 1+1 configuration Fixed modulation................................................................... 4-19 Figure 4.6 - Main Pilot Screen for a 1+1 configuration ACM modulation................................................................... 4-20 Figure 4.7 - Local transmitter 1 and local receiver 1 active............................................................................................. 4-32 Figure 4.8 - Local transmitter1 and local receiver 2 active.............................................................................................. 4-33 Figure 4.9 - Local transmitter 2 and local receiver 2 active............................................................................................. 4-33 Figure 6.1 - Equipment shelf view without SPDH extension ............................................................................................ 6-1 Figure 6.2 - Equipment shelf view with SPDH extension ................................................................................................. 6-1 Figure 6.3 - Pilot menu tree structure ................................................................................................................................ 6-2 Figure 7.1 - IDU front panel Leds...................................................................................................................................... 7-2 Figure 7.2 - Alarms screen on the Pilot ............................................................................................................................. 7-4

APPENDIX 2 - SLF-H REFERENCES .............................................................................................................................1

LINK COMPOSITION .............................................................................................................................................................1 REFERENCES OF ODUS HL.................................................................................................................................................2 REFERENCES OF ODUS H .................................................................................................................................................10 REFERENCES OF ODUS NL...............................................................................................................................................19 REFERENCES OF ODUS N .................................................................................................................................................27


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TABLES

Table 3-1 - 4-pin "POWER" connector pinout ................................................................................................................ 3-10 Table 3-2 - "Alarm in/out" connector pinout ................................................................................................................... 3-12 Table 3-3 - Ethernet port pinout....................................................................................................................................... 3-12 Table 3-4 - Characteristics of the Gigabit Ethernet optical interface............................................................................... 3-13 Table 3-5 - TRIB 1-8 connector pinout............................................................................................................................ 3-14 Table 3-6 - TRIB 9-16 connector pinout.......................................................................................................................... 3-15 Table 3-7 - Cable References for SLF-H ......................................................................................................................... 3-17 Table 3-8 - SFP module references for SLF-H ................................................................................................................ 3-18 Table 3-9 - TRIB16E1 connector pinout for the MUX64 SPDH unit ............................................................................. 3-21 Table 3-10 - Cable References for MUX64 SPDH unit................................................................................................... 3-22

Table 4-1 - Configuration compatibility .......................................................................................................................... 4-14 Table 4-2 - Configuration compatibility .......................................................................................................................... 4-15

Table 5-1 - Default configuration of the alarm relays...................................................................................................... 5-43

Table 7-1 - Meaning of the Wayside alarm ....................................................................................................................... 7-5 Table 7-2 - Meaning of radio alarms ................................................................................................................................. 7-5 Table 7-3 - Meaning of the SPDH alarm ........................................................................................................................... 7-5 Table 7-4 - Meaning of Fan and Temperature alarms........................................................................................................ 7-6 Table 7-5 - Meaning of Modem alarms ............................................................................................................................. 7-7 Table 7-6 - Meaning of ODU alarms ................................................................................................................................. 7-8 Table 7-7 - Meaning of Gigabit Ethernet alarms ............................................................................................................... 7-9 Table 7-8 - Meaning of E1 Tributary alarms ..................................................................................................................... 7-9 Table 7-9 - Meaning of External alarms .......................................................................................................................... 7-10


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0BSYSTEM DESCRIPTION


1. SYSTEM DESCRIPTION1.2.1 - System compositionAll SLF-H configurations are built from standard units installed in a 19" 1U chassis. x An IDU (Indoor Unit) composed of: x A Backplane connecting the various IDU units. x x x

1.2 - DESCRIPTION

1.1 - INTRODUCTION

The SLF-H range of microwave radio links provides highly reliable point to point communication with low installation costs in different frequency bands. This high-capacity range of microwave frequencies is characterized by excellent flexibility capabilities in terms of transmission capacity and of frequency bands used. It allows simultaneous or independent transport of Giga Ethernet data and 2Mbit/s links by PDH/Ethernet multiplexing.

An INT mother board providing the various IDU accesses: Giga Ethernet, Wayside, external alarm and relay outputs, serial management ports, PC access. An optional TNM4 card (daughter card) inserted on the mother board and providing 16 ports, E1. A hot pluggable U MODEM providing the cable interface with the ODU; in 1+1 and 2+0 configurations, two Modems are installed in the chassis, each one being associated to an ODU. A hot pluggable FAN module with three speed-controlled fans to cool the IDU.

SLF-H proposes ACM (Adaptive Coding & Modulation) configurations thanks to which the system can automatically and dynamically change of profile (i.e. of modulation scheme) based on the radio channel quality, so that if offers both the best throughput and the best robustness at any time.

SLF-H equipment is available in unprotected 1+0 configuration, in protected 1+1 configuration (Hot Stand By, Space diversity, Frequency diversity) and in 2+0 configuration (XPIC, Frequency Diversity) to double the radio channel capacity. x x

x

Main telecommunication radio bands covered: 6, 7, 8, 11, 13, 15, 18, 23, 26, 32 and 38 GHz

x

4 Gigabit Ethernet Interfaces + 80 optional E1 ports

An ODU (Outdoor Unit) providing the cable interface with the IDU. It consists of one transmitter and one receiver and performs frequency conversion and signal amplification.

x

Advanced switching and quality of service configuration for Ethernet traffic

x

Fixed Modulation: QPSK, 16QAM, 32QAM, 64QAM, 128QAM, 256QAM

A 1+0 terminal using an integrated antenna is presented on Figure 1.1 - SLF-H 1+0 terminal and a 1+1 terminal using a coupler is presented on Figure 1.2.

x

ACM Modulation: QPSK (two different profiles), 16QAM, 32QAM, 64QAM, 128QAM, 256QAM (three different profiles)

x

Radio channel: 7MHz, 14 MHz, 28 MHz, 56 MHz

x

XPIC mode (for 28MHz and 56MHz radio channels only)

x

Integrated measurement of bit and packet errors rate and receive signal level

x

Wide transmit power range in steps of 0.5 dB

x

Automatic Tx Power Control (ATPC algorithm)

x

Synthesizer frequency step: 250 kHzIntegrated antenna ODU

x

Full software control

x

Full compliance with ETSI standards

Other features available:IDU

x

1 Wayside 10/100BaseT Ethernet channel

Modem

Fan

x

5 external alarm inputs and 3 configurable relay outputs

x

1 management interface with two 10/100BaseT Ethernet ports connected by an integrated switch

x

1 VT100 configuration RS232 interface

Figure 1.1 - SLF-H 1+0 terminal


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1.2.6 - ODU VersionsSLF-H equipment is available in the following frequency bands: 6 GHz, 7 GHz, 8 GHz, 11 GHz, 13 GHz, 15 GHz, 18 GHz, 23 GHz, 26 GHz, 32 GHz and 38 GHz. Each frequency band is divided into several sub-bands. For each sub-band, there is one Low Band ODU and one high band ODU. The complete list of ODUs is given in APPENDIX 2 The ODU minimum and maximum frequencies indicated in this list correspond to the duplexer useful bandwidth. The minimum and maximum channel frequencies depend on the channel occupied bandwidth and therefore on the capacity. The following diagram summarizes the rules used to determine the minimum and maximum depending on the channel type used: see figure below.

Fmin (ODU) ODU bandwith

Fmax (ODU)

Figure 1.2 - SLF-H 1+1 Terminal (HSB)20 MHz

Fmin56 = FminODU+20

56 MHz radio channel Fmax56 = FmaxODU-20 20 MHz 28 MHz radio channel

x

An optional MUX64 SPDH shelf constituted of a "MUX64 Extension SPDH" card providing 64 x 2 Mbit/s ports.Fmin28 = FminODU+10 10 MHz

Fmax28 = FmaxODU-10 10 MHz

1.2.2 - IDU version

x

UFX-SP P2 (253302846): GE chassisFmin14 = FminODU+5 5 MHz 14 MHz radio channel Fmax14 = FmaxODU-5 5 MHz

x

UFE-16E1 (253302812): Optional 16E1 extension card (TNM4)

1.2.3 - Modem version

x

UFC-HW P2 (253115222): fixed or ACM QPSK to 256QAM 7 MHz to 56 MHz, software selectableFmin7 = FminODU+2.5 2.5 MHz 7 MHz radio channel Fmax14 = FmaxODU-2.5 2.5 MHz

x

UFC-HX P2 (253199822): fixed or ACM QPSK to 256QAM 7 MHz to 56 MHz XPIC support, software selectable

1.2.4 - Fan version

x

UFF P2 (253183126): hot swap fan module. Figure 1.3 - Minimum and maximum channel frequencies

1.2.5 - Optional MUX64 SPDH versionx For a 56 MHz radio channel, the minimum frequency is: FminODU + 20 MHz and the maximum frequency is: FmaxODU - 20 MHz

x

UFE-R 64E1 (253199728): Optional 64E1 extension chassis

x

UFE-RL (253311134): Optional 32E1 extension chassisPage 1-3 Page 1-4 SLF-H Installation and Operation Manual 253 255 964-D




x

For a 28 MHz radio channel, the minimum frequency is: FminODU + 10 MHz and the maximum frequency is: FmaxODU - 10 MHz

1.3 - SLF-H FEATURES1.3.1 - SLF-H block diagramsThe IDU-ODU interface consists of a single coaxial cable in 1+0 system. This cable transports the following frequency multiplexed signals: Uplink: x ODU remote power supply (-48 V DC). x The modulated transmit IF signal (350 MHz). x The uplink telemetry signal consisting of a 5.5 MHz carrier amplitude modulated by a 19200 bit/s digital signal. Downlink: x The modulated receive IF signal (140 MHz). x The downlink telemetry signal consisting of a 10 MHz carrier amplitude modulated by a 19200 bit/s digital signal. The SLF-H block diagram is given below.

x

For a 14 MHz radio channel, the minimum frequency is: FminODU + 5 MHz and the maximum frequency is: FmaxODU - 5 MHz

x

For a 7 MHz radio channel, the minimum frequency is: FminODU + 2.5 MHz and the maximum frequency is: FmaxODU - 2.5 MHz

Figure 1.4 - SLF-H block diagram


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0BSYSTEM DESCRIPTIONx A 140 MHz demodulator including: x Descrambler LDPC decoder (from which the BER is estimated) De-mapper Digital filter Adaptive equalizer Timing and Carrier recovery ADC 140 MHz I/Q Demodulator and analog filtering


1.3.2 - IDU features

The IDU, which is frequency independent, consists of:

x

A Microprocessor controlling the system and communicating with the ODU, the remote IDU, the SNMP agent and the Pilot software.

x

A Gigabit Ethernet Switch providing up to 4 Giga Ethernet interfaces equipped with optical or electrical SFP modules.

x

An interface with an optional TNM4 card providing 16 x 2 Mbit/s G703 channels; the TNM4 card acts as 2 Mbit/s line interface and tributary multiplexer / demultiplexer.

x

An extension interface located on the optional TNM4 for connecting an optional MUX64 SPDH chassis offering up to 64 2 Mbit/s G703 channels, leading to a total of up to 80 2 Mbit/s tributaries.

x

A network management interface compliant with SNMP protocol. This management interface includes 2 Ethernet ports. It communicates with the remote network management interface via an internal service channel (TSL). Once the interface has been configured, it acts as router for the network management traffic.

A DC-DC power supply, providing the tertiary voltage for the whole IDU (+3.3 V). In 1+1 protected and 2+0 systems, the unprotected part of the IDU is powered in parallel by the two power supplies from the two cable interfaces. A hot swap feature allows the Modem to be plugged in and out while powered up.

x

An interface with 5 external alarm inputs and 3 configurable relay outputs.

x

A 10/100BaseT Ethernet Wayside channel

1.3.4 - ODU featuresThe ODU, which is capacity independent, is an integrated unit consisting of: x x x x x x The IDU cable Interface which is the reverse of the Modem interface: Power supply input (-48 V) 350 MHz transmit IF input Uplink telemetry (5.5 MHz) 140 MHz Receive IF output Downlink telemetry (10 MHz) The transmitter which includes two frequency conversions. The frequency synthesis step is 250 kHz The duplexer filter The receiver including two frequency conversions (140 MHz IF output) The ODU power supply The microcontroller which controls the ODU and communicates with the IDU

x

An RS232 interface to configure the installation

1.3.3 - Modem features

The Modem, which is frequency independent, performs the following functions:

x

Cable interface with the ODU.

Frequency multiplexing is used to carry the following 5 signals on a coaxial cable:

-

ODU power supply (-48 V)

-

Transmit IF which is a carrier at 350 MHz frequency

-

Uplink telemetry (5.5 MHz) which carries the ODU control signals

-

Receive IF at 140 MHz

-

Downlink telemetry (10 MHz) which carries the information returned by the ODU (in particular alarms, receive signal level).

x

A 350 MHz modulator including:

-

Scrambler

1.3.5 - MUX64 SPDH shelf featuresThis optional chassis provides an interface via the TNM4 card allowing to propose 64 x 2 Mbit/s G703 additional ports; this card provides a function of 2 Mbit/s line interface and a function of tributary multiplexer/demultiplexer.

-

LDPC coder

-

Mapper

-

Digital filter

-

DAC

-

350 MHz I/Q Modulator and analog filtering


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0BSYSTEM DESCRIPTION 1.4.1.2 - Receiver operation & performancesOn the receive side, both receivers are active and receive the same signal from the radio. By default, the selected path in the receiver equipment passes through the Master Modem.


1.4 - PROTECTED CONFIGURATIONS

1.4.1 - 1+1 Hot Stand By

ODUMaster Modem Master

Modem Master

ODU INT ODUSlave Modem Slave

When a hardware failure is detected on the Master Modem, Master and Slave states are swapped, so that the new Master Modem has no hardware problem. This switch leads to less than 1s of hit. When a hardware failure is detected on the Master ODU, no action is taken. The link is still up thanks to the Slave ODU that is still receiving. The data will now come from the Slave receiver. No error occurs. When a hardware failure is detected on the Slave Modem or ODU, no action is taken. The link is still up thanks to the Master path. No error occurs. The Master/Slave state can be forced using the Pilot interface (for maintenance purpose for instance). Changing these system parameters leads to less than 1s of hit and it remains forced until the user selects the automatic mode back.

INT

Modem Slave

C O Master U P L E ODU R Slave

C O U P L E R

Figure 1.5 - 1+1 Hot Stand By configuration

In that system configuration, there is no radio diversity. Only the hardware (Modems and ODUs) is protected. In an equipment, one Modem-ODU couple is defined as Master", the other couple is defined as Slave.

1.4.1.1 - Transmitter operation & performances

It is also possible to force the selected receiver path (either from the Master or the Slave). This allows the user to verify that both receivers work properly, during system installation for instance: this is the "Maintenance Rx forcing" mode. In that case, the switching is errorless. The system state remains forced until the user selects the automatic mode back.

Only one transmitter is active at a time, the other is muted. Active ODU is independent of the Master" configuration (meaning a Slave can be the active ODU).

1.4.2 - 1+1 Space diversity

When a dissymmetric coupler is used, the path that leads to the least losses should be associated to the Main channel (the channel 1, physically the one at the bottom). When using such a coupler, the user might want to activate the Revertive automatic switching mode, which makes the system come automatically back to the path with the least losses when the hardware state allows it. This provides the best transmit power, and so the best link budget.Modem Master

ODUMaster

ODUMaster

Modem Master

INTModem Slave

INT ODUSlave

ODUSlave

When a hardware failure is detected on the Master Modem, Master and Slave states are swapped, so that the new Master Modem has no hardware problem. Additionally, the ODU associated to the broken Modem is muted and the other one is un-muted. Thanks to these actions, the link is kept up. This switch leads to less than 1s of hit. Once the Slave Modem card is repaired and if the Revertive automatic switching is activated, the active ODU may be switched automatically to get back the least loss Tx path. This switch leads to less than 1s of hit.

Modem Slave

Figure 1.6 - 1+1 Space diversity configuration In that system configuration, there is radio protection using space diversity (two independent radio paths are used with one active transmitter and two active receivers; this greatly improves the link availability). The hardware (Modems and ODUs) is protected as well. In an equipment, one Modem-ODU couple is defined as Master" the other couple is defined as Slave.

When a hardware failure is detected on the active transmitter, it is muted and the other one is un-muted and become active, so that the active transmitter has no hardware problem and so the link is kept up. This switch leads to less than 1s of hit. Once the fault is cleared and if the Revertive automatic switching is activated, the active ODU is switched automatically to get back the least loss Tx path. This switch leads to less than 1s of hit.

1.4.2.1 - Transmitter operation & performancesOnly one transmitter is active at a time, the other is muted. Active transmitter is independent of the Master" configuration (meaning a Slave can be the active ODU). When a hardware failure is detected on the Master Modem, Master and Slave states are swapped, so that the new Master Modem has no hardware problem. Additionally, the ODU associated to the broken Modem is muted and the other one is un-muted. Thanks to these actions, the link is kept up. This switch leads to less than 1s of hit. When a hardware failure is detected on the active ODU, it is muted and the other one is un-muted and become active, so that the active ODU has no hardware problem and so the link is kept up. This switch leads to less than 1s of hit.

When a hardware failure is detected on the Slave Modem or the muted ODU, no action is taken. The link is still up because the active Master works properly. No error occurs.

The Master/Slave state can be forced using the Pilot interface (for maintenance purpose for instance). Changing these system parameters leads to less than 1s of hit and it remains forced until the user selects the automatic mode back.

The active ODU can be forced using the Pilot interface (for maintenance purpose for instance). Changing this system parameter leads to less than 1s of hit and it remains forced until the user selects the automatic mode back.


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0BSYSTEM DESCRIPTIONIn an equipment, one Modem-ODU couple is defined as Master" the other couple is defined as Slave.


When a hardware failure is detected on the Slave Modem or ODU, no action is taken. The link is still up because the active Master works properly. No error occurs. The Master/Slave state can be forced using the Pilot interface (for maintenance purpose for instance). Changing these system parameters leads to less than 1s of hit and it remains forced until the user selects the automatic mode back.

1.4.3.1 - Transmitter operation & performancesBoth Master and Slave transmitters are active; they emit the exactly same data at two different frequencies. When a hardware failure is detected on the Master (Modem or ODU), Master and Slave states are swapped, so that the new Master Modem has no hardware problem. This switch leads to less than 1s of hit. When a hardware failure is detected on the Master ODU, no action is taken. The link is still up thanks to the Slave ODU that is still emitting. No error occurs.

The active ODU can be forced using the Pilot interface (for maintenance purpose for instance). Changing these system parameters leads to less than 1s of hit and it remains forced until the user selects the automatic mode back.

1.4.2.2 - Receiver operation & performances

On the receive side, both receivers are active and get independent signals (from independent radio paths) carrying the same data.

By default, the selected path in the receiver equipment passes through the Master Modem.

When a hardware failure is detected on the Slave Modem or ODU, no action is taken. The link is still up thanks to the Master path. No error occurs. The Master/Slave state can be forced using the Pilot interface (for maintenance purpose for instance). Changing these system parameters leads to less than 1s of hit and it remains forced until the user selects the automatic mode back.

At each airframe, the system checks whether the data coming from the Master and the Slave contains bit errors or not. If the Master has errors whereas the Rx Slave is clean, then the system selects the airframe from the Slave. This switching is of course errorless.

When a hardware failure is detected on the Master Modem, Master and Slave states are swapped, so that the new Master Modem has no hardware problem. This switch leads to less than 1s of hit.

1.4.3.2 - Receiver operation & performancesOn the receive side, both receivers are active and get independent signals (from the two emitted frequencies) carrying the same data. By default, the selected path in the receiver equipment passes through the Master Modem. At each airframe, the system checks whether the data coming from the Master and the Slave contains bit errors or not. If the Master has errors whereas the Slave is clean, then the system selects the airframe from the Slave. This switching is of course errorless. When a hardware failure is detected on the Master Modem, Master and Slave states are swapped, so that the new Master Modem has no hardware problem. This switch leads to less than 1s of hit. When a hardware failure is detected on the Master ODU, no action is taken. The link is still up thanks to the Slave ODU that is still receiving. The data will now come from the Slave receiver. No error occurs. When a hardware failure is detected on the Slave Modem or ODU, no action is taken. The link is still up thanks to the Master path. No error occurs. The Master/Slave state can be forced using the Pilot interface (for maintenance purpose for instance). Changing these system parameters leads to less than 1s of hit and it remains forced until the user selects the automatic mode back.

When a hardware failure is detected on the Master ODU, no action is taken. The link is still up thanks to the Slave ODU that is still receiving. The data will now come from the Slave receiver. No error occurs.

When a hardware failure is detected on the Slave Modem or ODU, no action is taken. The link is still up thanks to the Master path. No error occurs.

The Master/Slave state can be forced using the Pilot interface (for maintenance purpose for instance). Changing these system parameters leads to less than 1s of hit and it remains forced until the user selects the automatic mode back.


1.4.3 - 1+1 Frequency diversity

F1 / F1

ODUMaster Modem Master

ODU INT ODUSlave Modem Slave

Modem Master

Master

INT

F2 / F2


Modem Slave

ODU

Slave

Figure 1.7 - 1+1 Frequency diversity configuration

In that system configuration, there is radio protection using frequency diversity (two different frequencies are used: two active transmitters and two active receivers, one transmitter being associated to one receiver; this greatly improves the link availability). The hardware (Modems and ODUs) is protected as well.Page 1-11 Page 1-12 SLF-H Installation and Operation Manual 253 255 964-D




1.5 - ACM CONFIGURATION

In ACM configuration, the system is able to change automatically and dynamically parameters of the transmitted signal to best match to the radio channel quality. The idea consists in defining several ACM profiles characterized by a modulation scheme and an efficiency of error correcting code. The system will move from an ACM profile to another according to the signal quality estimated at the receiver end. In order to offer a smooth and smart adaptation to the channel capacity at anytime, the SLF-H product offers up to 9 ACM profiles. The highest profile offered is user-configurable and will also depend on the SW license. The lowest profile will depend on the number of PDH tributaries used. Please refer to the Table 4-2. The changes of ACM profile do not generate any bit error and can handle flat fading rates greater than 100dB/s as well as strong selective fading. When the ACM profile is changed, the effective data rate is modified accordingly. For example, when the modulation scheme decreases and/or when the efficiency of the code is increased, the available throughput being able to pass through the radio channel decreases; as a trade-off, the system becomes more robust regarding radio disturbances and so keeps the link up without any bit errors on the still available traffic. Only the rate allocated to the Ethernet traffic is modified to adapt to the current ACM profile. All the other tributaries (PDH, management) keep the exactly same rate whatever is the current ACM profile. If the quality of service (QoS) is activated, the Ethernet shaping is automatically adapted, making it possible to guarantee the quality constraints on the different priority Ethernet flows.

See below a synthetic illustration of ACM:

Maximum profile: The maximum profile defines the ACM profile above which the system will never go. Min GE and Max profiles can be selected among up to 9 ACM profiles. The choice of minimum and maximum profiles is done by the next configuration window:

See 2 for more details concerning the configuration of the quality of Ethernet service.

Four parameters are configurable: the maximum profile, the GE minimum profile, the adaptive tx power, and the ACM 1+1 mode. The parameters are available in the capacity configuration window which is show below (click on the capacity bar on top of Pilot software main screen to open it). A modulation and an Ethernet bandwidth correspond to each profile. The field value GE Bandwidth depend on radio channel bandwidth, ACM profile and number of E1 used. Bandwidth is expressed in L2 Ethernet (Ethernet frame rate out IFG and preamble).

GE Tx mute on profile below:


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The minimum GE profile corresponds to the ACM profile under which the Ethernet traffic will be cut. It is therefore possible to adjust the parameters of Ethernet QoS based on the bandwidth corresponding to the selected minimum profile (adjustment of the metering or of the shaping of the strict priority class). However, the system can still continue moving down of modulation so it can keep the other tributaries up (E1, Wayside, TSL) as long as possible in case of strong radio disturbance; only the Ethernet will be cut off.

ACM Adaptive TX power:

When disabled, the max output power of the radio transmitter is fixed at the max output power offered by the highest selected modulation scheme offered within the several ACM profiles (modulation of Maximum profile). Under channel degradation, the ACM profile is changed down as soon as a predefined threshold is crossed. Under channel improvement, the ACM profile is changed up as soon as a predefined threshold is crossed.

This strategy ensures that: - the system always offers the best and highest output power, leading to an improved overall link budget - the right output power is always used for each modulation scheme, making sure that the performances are good for each one of them As a trade-off, changing the output power needs some time. Therefore, the optimized working of ACM with adaptive output power is achieved under rather slower fading events. Also, the ETSI standard specifies that the applicable ETSI class in ACM mode must be supported by all the ACM profiles. Because of the high max output power offered by the QPSK modulation scheme, the system can only comply with the class 2 (whatever is the selected maximum profile). When ACM Adaptive TX power is enabled, the transmit power configuration remains the same as when it is disabled. The configuration is always performed for the configured Maximum profile modulation. When changing profile, applied transmit power will be equal to the configured transmit power plus a power increase corresponding to the difference of maximum transmit power between maximum modulation and current modulation. This power increase depends on the ODU type and radio frequency used. For example, with 15GHz ODU H, if the maximum profile has a modulation scheme 256QAM, and the configured transmit power is 17dBm, the current transmit powers in the different modulations will be as follows: 256QAM: 17 dBm 128QAM: 18 dBm 64QAM: 18 dBm 32QAM: 23 dBm 16QAM: 23 dBm QPSK: 26 dBm Note that the transmit power displayed on the Pilot software is always the one configured for the maximum modulation, even if current modulation is below that. The maximum transmit power for each modulation, ODU type, and radio frequency is available in the performances sheets.

This strategy ensures that: - system can face extremely fast fading events in an optimized way, making it very robust regarding any radio phenomenon - applicable ETSI class (up to class 6B) allows the customer to comply with all requirements of local radio regulators and make it easier to get radio licenses As a trade-off, the max output power is limited to this offered by the highest modulation and remains the same for all other modulation schemes.

ACM mode (1+1 protection): As 1+1 configuration is generally associated with non symmetrical couplers, the receive signal level of the standby receiver is lower than the main receiver. So, in case of ACM, two strategies are available: maximum throughput mode with lower protection, or maximum protection mode. In 1+1 configuration, the profile to be used by the remote transmitter(s) is decided by the local equipment according to the quality of its two received signals. - Max throughput mode: The highest profile between this allowed by the Master modem and this allowed by the Slave modem is used. Therefore, if the channel quality of the Master is degraded whereas the Slave one is still good, the system wont move down of profile; both Master and Slave will remain at the highest profile. The system first switches without error between the reception of the Master and of the Slave before changing of ACM profile. This solution provides to the user an optimized using of the available channel capacity. Exemple:

When enabled, the max output power of the radio transmitter is adapted depending on the current modulation scheme so that it always offers the highest reachable output power. Under channel degradation, the ACM profile is changed down as soon as a predefined threshold is crossed. Then the output power is improved up. Under channel improvement, the output power is reduced as soon as a predefined threshold is crossed. Then the ACM profile is changed up.


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In 2+0 configurations (either XPIC or FD), three modes are available for the PDH traffic: - All E1 on one channel: Every PDH tributaries are carried over the same radio channel (channel 1). - E1 split over the two channels: In this mode, the PDH tributaries are split over the two radio channels. This can be relevant especially in ACM mode to make the system able to use lower ACM profile and so offer a better overall link availability. - E1 duplicated over the two channels: This mode is a protected configuration for the PDH tributaries. They are all duplicated and carried over the two radio channels. On the receive side, the system will forward the incoming radio traffic from the receiver that offers the best performances. This mode improves the PDH availability. As a trade off, the available Ethernet throughput is reduced. Nb of E1 0 2 4 8 16 32 48 64 80 All E1 on one channel Channel 1 Channel 2 0 0 2 0 4 0 8 0 16 0 32 0 48 0 64 0 80 0 E1 split over the two channels E1 duplicated over the two channels Channel 1 Channel 2 Channel 1 Channel 2 0 0 0 0 2 0 2 2 2* 2* 4 4 4* 4* 8 8 8* 8* 16 16 16 16 32 32 32 16 48 48 32 32 64 64 48 32 80 80 * E1 lost if the other channel is lost

- Max protection mode: The lowest profile between this allowed by the modem Master and this allowed by the modem Slave is used. Therefore, if the channel quality of the Slave is degraded whereas the Master one is still good, the system wont remain at the highest profile; both Master and Slave will move down of profile. The system first changes of profile before switching between the reception of the Master and of the Slave. Exemple:

1.6 - 2+0 CONFIGURATIONS

The 2+0 configuration allows the system to double its transmission capacity. To do so, it uses two different radio channels independently. This is achieved either by using two different frequencies (2+0 Frequency Diversity) or two different polarizations at the same frequency (2+0 XPIC). 2+0 modes are available in the protection configuration window (accessible from the protection button on the main window of the Pilot software). Bellow is a screenshot of the window.

The Ethernet traffic is split over the two channels in all modes. The available total Ethernet bandwidth depends on the number of E1 on each channel. To compute Ethernet bandwidth, refer to the performances sheets to find the right configuration for each channel and simply sum the values obtained for both channels. Since the ACM feature can be used in 2+0 configurations, this means that the radio bandwidth can change dynamically and independently on the two channels. In order to guarantee an optimized using of the available bandwidth at any time, the Ethernet traffic is split over the two channels based on a proprietary and patented solution, ensuring the QoS and keeping the frame order.

1.6.1 - 2+0 FDIn that case, the system uses two different frequencies: one for each of the two radio channels.


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F1 / F1

Modem 1

ODUModem 1

ODU1

1

INT ODUModem 2

F2 / F2

INT2

Modem 2

ODU

2

1.6.2 - 2+0 XPIC

XPIC requires the use of specific modem cards including an Interference canceller ASIC (XPIC algorithm) and uses 2 ODUs linked to a double-polarization antenna.

Modem1 XPIC V

ODUModem1 XPIC

ODU INT5 ODUH Modem2 XPIC

V

INT5

Modem2 XPIC

ODU

H

This configuration offers therefore two radio channels using the same path and at the same frequency. These two channels differ by the used polarization of the electromagnetic waves.

Due to physical limitations (antenna cross polar discrimination, antenna alignment, radio propagation conditions ), the two signals will interfere with each other, making it mandatory to implement a cross polarisation interference canceller at the receiver side. Thanks to that, the receiver sensitivity performances are equivalent to those of non XPIC modes. This is achieved by using a specific architecture on the modem card.


No XPIC

V

V H

XPICPage 1-19

H

Page 1-20


1BGIGABIT ETHERNET FUNCTION

1BGIGABIT ETHERNET FUNCTIONIf the radio condition requires a lower profile than the minimum configured, the GE transmission is cut on the radio port (all frames dropped).

2. GIGABIT ETHERNET FUNCTION2.3 - TOPOLOGIESThree main modes corresponding to different topologies can be implemented.

This chapter introduces the Gigabit Ethernet functions available in equipment. It is recommended to read this chapter before going further into Ethernet QOS configuration. Detailed description of the configuration can be found in chapter 5.3 -)

2.1 - INTRODUCTION2.3.1 - 4 EPLINE mode

SLF-H embeds a full layer 2 switch with advanced QOS (Quality Of Service) features. 4 GE port are available on the front panel of each IDU. An additional internal port allows the switch to send traffic over the radio to the other side of the link. Several configurations allow controlling servi

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