06 Tr3583eu00tr 0101 System Commissioning

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System commissioning Siemens

TR3583EU00TR_0101 2003 Siemens AG

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Contents1 Commissioning of the SURPASS hiT7300 3 1.1 Commissioning overview 4 2 OLR and ONN commissioning 7 2.1 SURPASS hiT7300 delivery variants 8 2.2 hiT7300 commissioning strategies 10 2.3 NE commissioning procedures 18 3 Optical link commissioning 39 3.1 Overview of optical link commissioning 40 3.2 Pre-emphasis schemes 42 3.3 Optical link commissioning strategy 46 3.4 Optical link commissioning procedures 48

System commissioning


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Siemens System commissioning

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1 Commissioning of the SURPASS hiT7300


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1.1 Commissioning overview

The installation of SURPASS hiT7300 comprises shelves, racks and cable assembly.TransNet provides a list of material for the entire network and for each NE inparticular, and a bill of material of each DWDM route. The assembly of all the cards,in each shelf, and all the cabling connections must be based on TransNet reports fora successful system installation and commissioning.SURPASS hiT7300 has to be configured on initial commissioning, prior to the regularoperation. NE and Optical Link commissioning is mandatory after all the racks andshelves hardware are properly installed.Commissioning a SURPASS hiT7300 is the process of taking the installed NE's andbringing them to an operational state. The commissioning tasks have to be performedpartially on site; in this case personnel must travel to NE site to perform thenecessary operations.To perform the NE and Optical Link commissioning, TransNet provides a set ofNCF's and a commissioning report, at the end of the network planning. The NCF'scontain most of the necessary configurations for each NE of the planned network.To install and commission SURPASS hiT7300, all necessary tasks have to beperformed in sequence. For each task, a separate document is provided:For the Installation:Interconnect, Cabling and Mechanical Assembly (ICMA);Installation Test Manual (ITMN).

For NE Commissioning:OLR and ONN Commissioning;SON Commissioning.For Optical Link Commissioning:Optical Link Commissioning (OL).

WarningBefore commissioning procedures may be started, the following installationtasks must be completed for each network element:

All equipment bays installed and grounded; All sub-racks installed and grounded; All fuses in the fuse panel have to be installed; All DC power and ground connections complete; All cards, and blank panels as required have been installed in the sub-racks; All electrical cable connections (LAN, external alarm, etc.) complete for each sub-

rack; All optical cable connections complete.


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3Optical LinkCommissioning

Start Start

2NE Commissioning

1. ITMN;2. ICMA;3. TransNet

reports.

1. OLR and ONNCommissioning;

2. SONCommissioning;

3. CommissioningReport;

4. NCF files.

1. OLC;2. TransNet

reports .

1Installation

FinishFinish

Fig. 1 Installation/Commissioning sequence

Installation Steps done Equipment bays are installed.

All sub-racks are installed.

DC power and groundconnections complete.

All fuses are installed.

All cards are installed.

All fiber connections made

Electrical cable connectionscomplete.

Fig. 2 Installation steps


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2 OLR and ONN commissioning

Fig. 3


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2.1 SURPASS hiT7300 delivery variants

The three delivery formats are available, which differ regarding the pre-installedHardware (HW) and Software (SW). The SURPASS hiT7300 system is available inthe following delivery formats: Rack and Shelf preconfiguration;

In the Rack and Shelf preconfiguration delivery format, the entire assembly work isassured by Siemens in advance. In this case, all cards are plugged in the shelvesaccording to the customer List Of Material (LOM), and installed in the correctracks. In addition, the main NE configuration parameters are set in the Local CraftTerminal (LCT), and the required software is installed to the NE.

Shelf preconfiguration;In the Shelf preconfiguration delivery format, all shelves are equipped with cardsaccording to the customer LOM. In this case, the required software is installed tothe NE, and the shelf identifier (ID) is the only configured parameter in the NE viaLCT.

Bulk.The Bulk delivery format does not support any pre-configured parameters for theNE's.

TIP According to the purchased delivery format, the corresponding commissioningstrategy has to be selected.


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Rack and Shelf preconfiguration done

Sub-Racks are installedin the Racks.

Shelf (ID) is configured.

All cards are plugged in. Software is installed .

NCF is loaded. S U R

P A S S h i T

7 3 0 0

Fig. 4 SURPASS hiT7300 Rack and Shelf preconfiguration

SW hiT7300 Rack

O p t i c a l f i b e r s

R a c k

h i T 7 3 0 0

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u b

- R a c k

h i T 7 3 0 0

S u b

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S u b

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Shelf preconfigurationdone



All cards are plugged in. Software is installed .

NCF is loaded.

Fig. 5 SURPASS hiT7300 Shelf preconfiguration

Bulk? Oh

Bulk deliverydone



All cards are plugged in.

Software is installed .

NCF is loaded.

Fig. 6 Bulk


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2.2 hiT7300 commissioning strategies

According to the purchased delivery format, the corresponding commissioningstrategy should be selected.

2.2.1 Rack and Shelf preconfiguration:

Prerequisites: No card fault Light Emitting Diodes (red LED's) are continuously lit. The NE is powered up and the NE controller card has the OK LED lit.

2.2.1.1 Commissioning gateway NE's (on site): As the first commissioning step the GW NE's that will connect the DataCommunication Network (DCN) to the TMN system, or customer network shall beconfigured (on site).

TIPThe GW NE must be configured as a permanent gateway, and support a DynamicHost Communication Protocol (DHCP) server.

Procedures:1. Connecting to NE on site;2. Configuring NE security settings;3. Configuring gateway function;4. Configuring external NTP server or NE time;5. Configuring ring manager.

2.2.1.2 Commissioning non gateway NE's (remotely):Once the GW NE that supports DHCP server is commissioned and non GW NE's areinstalled in powered, the OSC connectivity is up and running. The non GW NE'sbecame reachable and commissioning of the remaining NE's shall be performed.

Procedures:1. Connecting to NE remotely;2. Configuring NE security settings;3. Configuring ring manager;

4. Configuring user channel (OLR only).


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Prerequisites:Prerequisites:

No card fault Light Emitting Diodes (red LED's) are continuously lit.

The NE is powered up and the NE controller card has the OK LED lit.

Fig. 7 Prerequisites

Commissioning strategy in case of Rack and Shelf preconfigurationCommissioning strategy in case of Rack and Shelf preconfiguration

1. Connecting to NE on site1. Connecting to NE on site

2. Configuring NE security settings2. Configuring NE security settings

3. Configuring gateway function3. Configuring gateway function

5. Configuring ring manager 5. Configuring ring manager

4. Set NE time and NTP4. Set NE time and NTP

1. Connecting to NE remotely1. Connecting to NE remotely



4. Configuring user channel (OLR only)4. Configuring user channel (OLR only)

Commissioning gateway NE's (on site)

Commissioning non gateway NE's (remotely)

Fig. 8 Commissioning strategy in case of Rack and Shelf preconfiguration


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2.2.2 Shelf preconfiguration

Prerequisites: Assembly and cabling according to TransNet commissioning reports and

Installation and Test Manual (ITMN); No card fault LED's are continuously lit; The NE is powered up, and the NE controller card has the OK LED lit; TransNet commissioning reports must be available; A list with the DCN MAC addresses of all shelves that contain the NE controller

cards (CCEP/CCMP) must be available; The Network Element Configuration File (NCF) must be available and ready for the

loading to NE's.

2.2.2.1 Commissioning NE's on site:On site should be commissioned NE's that will connect the DCN to the TMN system,or customer network (GW NE's) and remaining ONN's (non OLR's), which allows toestablish OSC connectivity in the entire DCN. The GW NE must be configured as apermanent gateway, and support a Dynamic Host Communication Protocol (DHCP)server.1. Connecting to NE on site;

2. Configuring NE security settings;3. Configuring gateway function (for GW NE's only);4. Setting NE name;5. Downloading NCF;6. Configuring external NTP server (for GW NE's only) or NE time;7. Configuring ring manager;8. Setting NE state to commissioned.

2.2.2.2 Remotely Commission OLR's:Once all NE's in the DCN, and a permanent gateway that supports DHCP server arecommissioned, the OSC connectivity is up and running and all NE's in the DCN canbe remotely accessed.1. Connecting to NE remotely;2. Configuring NE security settings;3. Setting NE name;4. Downloading NCF;5. Configuring ring manager;6. Configuring user channel;7. Setting NE state to commissioned.


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Assembly and cabling according to TransNet commissioning reportsand Installation and Test Manual (ITMN).

No card fault LED's are continuously lit . The NE is powered up and the NE controller card has the OK LED lit. TransNet commissioning reports must be available . A list with the DCN MAC addresses of all shelves that contain the NE

controller cards (CCEP/CCMP) must be available. The Network Element Configuration File (NCF) must be available

and ready for the loading to NE's.


Commissioning strategy in case of Shelf preconfigurationCommissioning strategy in case of Shelf preconfiguration



3. Configuring GW function (GW NEs)3. Configuring GW function (GW NEs)

5. Downloading NCF5. Downloading NCF

4. Setting NE name4. Setting NE name




6. Configuring user channel6. Configuring user channel

CommissioningNE's on site

Remotely Commission OLR's


6. Set NE time and NTP (GW NEs)6. Set NE time and NTP (GW NEs)

8. Setting NE state to commissioned8. Setting NE state to commissioned




Fig. 10 Commissioning strategy in case of Shelf preconfiguration


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2.2.3 Bulk

The Bulk delivery format does not support any pre-configured parameters for theNE's and the corresponding procedures that listed below must be executed in thecorrect order.

In order to start NE commissioning, the following prerequisites must be fulfilled.

Prerequisites: Assembly and cabling according to TransNet commissioning reports and

Installation and Test Manual (ITMN); No card fault LED's are continuously lit; The NE is powered up, and the NE controller card has the OK LED lit; TransNet commissioning reports must be available; A list with the DCN MAC addresses of all shelves that contain the NE controller

cards (CCEP/CCMP) must be available; Manufacturing number of the shelves that contain all shelf controller cards

(CCSP), and corresponding shelf ID according to TransNet commissioning reportsmust be available;

The NCF must be available and ready for the loading to NE's.


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Assembly and cabling according to TransNet commissioning reportsand Installation and Test Manual (ITMN).

No card fault LED's are continuously lit . The NE is powered up and the NE controller card has the OK LED lit. TransNet commissioning reports must be available . A list with the DCN MAC addresses of all shelves that contain the NE

controller cards (CCEP/CCMP) must be available. Manufacturing number of the shelves that contain all shelf controller

cards (CCSP), and corresponding shelf ID according to TransNetcommissioning reports must be available;

The Network Element Configuration File (NCF) must be availableand ready for the loading to NE's.



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2.2.3.1 Commissioning NE's on site:On site should be commissioned NE's that will connect the DCN to the TMN system,

or customer network (GW NE's) and remaining ONN's (non OLR's), which allows toestablish OSC connectivity in the entire DCN.

TIPThe GW NE must be configured as a permanent gateway, and support a DynamicHost Communication Protocol (DHCP) server.

1. Connecting to NE on site;2. Configuring NE security settings;

3. Configuring gateway function (for GW NE's only);4. Setting NE name;5. Setting shelf ID;6. Downloading NCF;7. Configuring external NTP server (for GW NE's only) or NE time;8. Configuring ring manager;9. Setting NE state to commissioned.

2.2.3.2 Remotely Commission OLR's:Once all NE's in the DCN, and a permanent gateway that supports DHCP server arecommissioned, the OSC connectivity is up and running and all NE's in the DCN canbe remotely accessed.

1. Connecting to NE remotely;2. Configuring NE security settings;3. Setting NE name;4. Setting shelf ID;5. Downloading NCF;

6. Configuring ring manager;7. Configuring user channel;8. Setting NE state to commissioned.


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Commissioning strategy in case of Bulk deliveryCommissioning strategy in case of Bulk delivery



3. Configuring GW function (GW NEs)3. Configuring GW function (GW NEs)






7. Configuring user channel7. Configuring user channel

CommissioningNE's on site

Remotely Commission OLR's


7. Set NE time and NTP (GW NEs)7. Set NE time and NTP (GW NEs)





5. Setting shelf ID5. Setting shelf ID

4. Setting shelf ID4. Setting shelf ID

Fig. 12 Commissioning strategy in case of Bulk delivery


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2.3 NE commissioning procedures

2.3.1 Connecting to NE on siteThis procedure provides the necessary steps to establish a connection, on site, to anNE.

TIPIt is mandatory that the laptop is set to DHCP in order to be able to obtain an IPaddress from the network.

1. Connect the laptop to the QF Ethernet interface on the NE controller card viastandard Ethernet cable.

2. To open Internet Explorer window on the Windows taskbar, select " Start >Programs > Internet Explorer " menu item.

3. To access the NE via QF Ethernet interface, the default Domain Name System(DNS) name must be entered. In the Internet Explorer Address field enter:"http://LocalQF. "

4. Click on " Start the @CT ". A "Login " window is opened.5. A default account is provided to access the NE for the first time. Enter the

following settings of the default user account:

Security Name:" Administrator "Password: " siemens "Privacy Protocol: " AES_128 "

Authentication Protocol: " MD5"6. Click " Login " button to login, and the LCT is opened.


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2.3.2 Connecting to NE remotely

TIPThis procedure must be completed from the NE, which has been commissioned andconfigured as a GW NE.

To establish remote connection to an NE, complete the following steps:

1. To open " Reachable Systems - Info " window select in the LCT main menu,"Communication > DCN > Reachable Systems... " menu item.

2. Select the correct NE name to be commissioned, and then click " Connect ".The NE name after startup contains the MAC address of the shelf where the maincontroller card is installed (e.g. hiT-080006ABCDEF). The commissioner mustidentify NE by the MAC address information noted down during installation.

3. A default account is provided to access the NE for the first time. Enter thefollowing settings of the default user account:

Security Name:" Administrator "Password: " siemens "Privacy Protocol: " AES_128 "

Authentication Protocol: " MD5"4. Click " Login " button to open the LCT for the remote NE.


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2.3.3 Configuring NE security settings

It is recommended to modify the default user account or create a new user accountafter the initial login.

To modify an existing user account, complete the following steps:1. In the LCT main menu, select " Security -> Change Password... " menu item.2. In the " Change Password " window enter the following settings:

"Password "-> new password;"Confirm Password " -> confirm new password;

3. Click " Apply " to confirm the settings.

To create a new user account, complete the following steps:1. In the LCT main menu, select " Security -> User Administration... " menu item.2. In the " User Administration " window click " Add " button to open " User Add "

window.3. In the " User Add " window enter the following settings:

"Name " -> new account name;"Password " -> new account password;"Confirm password " -> confirm new password.

4. In the Group drop-down list, select one of the following user groups:AdministrationConfigurationOperationMaintenanceSupervision

5. Click Apply to confirm all settings.


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2.3.4 Configuring gateway function

This procedure is only used to commission a permanent gateway NE.To configure the gateway function, complete the following tasks:

Enabling permanent gatewayTo enable the permanent gateway function, complete the following steps:1. To open " DCN - Config " window, select in the LCT main menu " Communication

> DCN > Configuration... " menu item.2. In the Gateway Function Status drop-down list, select the " Permanent list " item.3. Click " Apply " to confirm the setting.

Configuring DHCP serverTo configure the DHCP server, complete the following steps:1. To open " DHCP - Config " window, select in the LCT main menu

"Communication > DCN > TCP/IP > DHCP... " menu item.2. In the DHCP area, select one of the following from the Role drop-down list:

"Primary ": if primary DHCP server."Secondary ": if secondary DHCP server."Client ": if no DHCP server function has to be activated in this NE.



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Fig. 18

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Fig. 19


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Assigning Q external interface IP addressThis task is only applicable when connecting the permanent gateway NE to a TMN.

The Q Ethernet interface is configured to connect the NE/DCN to the customer IPnetwork.

WARNINGThe IP addresses listed in the following table cannot be used for the Q externalinterface, or by any device connected to this interface (e.g., TMN system, FTPserver, or NTP server). Furthermore, no routes to external destinations can usethe IP addresses belonging to such ranges.

Assigned IP address range Remarks

169.254.0.0 - 169.254.255.255(prefix subnet length = 16).

Used for internal communication between the NEcontroller card and remaining cards.

172.16.0.0 - 172.31.255.255(prefix subnet length = 24).

Used by the DHCP server for IP assignment toNE's communication via DCN. Note that only onesubnet, with prefix length 24, in the specified rangeis used (default is 172.16.1.0/24).

192.168.126.0 -192.168.127.252 (prefix subnetlength = 30)

Used for laptop (with LCT installed) access vialocal QF to the NE.

To assign the Q external interface IP address, complete the following steps:1. To open " Interfaces - Config " window select in the LCT main menu,

"Communication > Interfaces... " menu item.2. Based on customer network information, enter the following settings in the " Q

External Interface " area:"IP Address ": Q external interface IP address;"Subnet Mask ": subnet mask;

Click " Apply " to confirm the settings.


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Fig. 20 IP addresses that cannot be used for the Q external interface

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2

3

Fig. 21


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Configuring a static routeTo establish a static route to a TMN or FTP server, complete the following steps:

1. To open " IP Static Routing - Config " window, select in the LCT main menu"Communication > DCN > TCP/IP > IP Static Routing... " menu item.

2. To open " IP Static Route - Modify " window, select an empty entry in the tableand click " Modify " button.

3. According to the customer network, enter the following settings:"Address Type ": e.g. " IPv4 ";"Network Address ": e.g. " 10.10.0.0 ";"Subnet Mask ": e.g. " 255.255.0.0 ""Next hop Type ": e.g. " IPv4 ";

"Next hop ": e.g. " 10.10.11.1 ";"IP Route Type ": e.g. " Direct ".4. Press " Apply " button to confirm the settings.

1

2

3

4

Fig. 22


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2.3.5 Setting NE name

To set the NE name, complete the following steps:1. To open " Network Element - Config " window in the " Module View ", right-click

on the NE bar, and then select " Configuration > NE Configuration... " menuitem.

2. According to TransNet commissioning reports enter the following settings:"Name ": NE name;"Location ": NE location.


1

2

3

Fig. 23


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2.3.6 Setting shelf ID

It is mandatory that the shelf ID number is correctly assigned according to TransNetcommissioning reports; no shelf ID modifications are possible after initialconfiguration. The shelf that contains the NE controller card (CCEP/CCMP) is alwaysassigned to shelf ID "1" by NE software, so no another configuration is possible forthis shelf.

TIPThe shelf manufacturing number noted down during installation is required tocomplete this procedure.

To set shelf ID, complete the following steps:

1. To open " Shelves - Config " window right-click on the NE bar in the " ModuleView " window, and then select " Configuration > Shelves... " menu item.

2. The table displays the NE shelves with the corresponding shelf " Manufacturing Number ", and " Shelf ID " assigned by the NE controller card (from 1 to 128).

3. If in this NE more then one shelf is available select a shelf by matching theManufacturing number in the table with the shelf manufacturing number noteddown during installation.

4. According to the shelf manufacturing number enter the following settings:"Assign Shelf ID [2...127] ": shelf ID number (from 2-127);"Location ": shelf location (shelf location in rack).


TIPRepeat steps 1 to 5 for all available shelves in the table.


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1

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Shelf manufacturingnumber should be noteddown during installation.

Shelf manufacturingnumber should be noteddown during installation.

Shelf ID should beAssigned here

Shelf ID should beAssigned here

34

5

Fig. 24


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2.3.7 Downloading NCF

To load the NCF to the NE, complete the following steps:1. To open " Software/File Management " window right-click in the " Module View "

window, on the NE bar, and then select " Software/File Management... " menuitem.

2. In the " NCF " tab, click " Download " to open the " FTP Download - NetworkElement - NCF " window.

3. According to the NCF location, in the FTP File drop-down list select one of thefollowing:a) If the NCF is in the laptop performing commissioning, select Local and then

proceed to step 4.

b) If the NCF is in a remote server, select Remote and then proceed to step 7.c) If the NCF is in a permanent gateway NE, select Other NE then proceed tostep 9.

4. To open " Open File Dialog " window select in the " Type of Protocol " drop-downlist "FTP/FTPS ", and then click " Browse ".

5. According to the NCF file name in TransNet commissioning reports, select thecorrect NCF for this NE and click " Open ".

6. Click Start to start NCF download and proceed to step 11.7. In the " FTP Parameters " area enter the following settings:

"Type of Protocol ": FTP/FTPS;"Remote Login Account ": user account name to access external FTP server;"Remote Login Password ": user account password to external FTP/FTPS server;"Remote Address ": external FTP/FTPS server IP address;"Remote File Name ": path and NCF name (according to TransNet commissioningreports) on external FTP/FTPS server.

8. Click " Start " to start NCF download and proceed to step 10.9. In the " FTP Parameters " area, according to the TransNet commissioning reports

enter the following settings:"Type of Protocol ": FTP/FTPS;

"Gateway hostname ": permanent gateway NE name;"Remote File Name ": NCF name for this particular NE.

10. Click Start to start NCF download and proceed to step 11.11. In the " Software/File Management " window, select the " NCF " tab and then click

"Swap NCF ".

TIPThe new configuration will be activated in some minutes.


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1

2

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4

5

Fig. 25

11

6

Fig. 26


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2.3.8 Configuring external NTP server or NE time

NTP is used for time synchronization of the NE's. NTP servers can be configured inNE's where DHCP server is enabled, and SON's. For the remaining NE's, the NTPservers are configured automatically via DHCP, i.e., the permanent gateway NE isused as the NTP server by the remaining NE's. If no NTP server is currentlyavailable, the NE goes into a free-running mode, depending only on its internal clock.To configure an NTP server, or NE time, complete one of the following tasks:

Configuring external NTP server.1. To open " Network Time Protocol - Config " window right-click on the NE bar in

the " Module View ", and then select the " Configuration > Network TimeProtocol... " menu item.

2. Select an available " Server Index " in the table, and enter the IP address of theexternal NTP server in the " Server Address " field.

3. Click " Apply " to confirm all settings.

Configuring NE time.The NE time can only be configured if there is no NTP server has been enabled.Once an NTP server is configured, the NE time is automatically overridden.1. To open " Network Element Time - Config " window right-click on the NE bar in

the " Module View " window, and then select the " Configuration > NE Time... "menu item.

2. Set the NE time in the " Adjust NE Time to " area.3. Click " Apply " to confirm all settings.


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1

2

3

Fig. 27

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Fig. 28


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2.3.9 Configuring ring manager

In case of a ring or meshed network topologies, the Engineering Order Wire (EOW)ring manager can be used to prevent feedback distortion due to loop configuration inan EOW call.To enable EOW ring manager on a specific shelf, complete the following steps:1. To open " Shelves " window right-click on the NE bar in the " Module View "

window, and then select " Configuration > Shelves... " menu item.2. In the " Ring Manager " column, select the checkbox related to the desired shelf.3. Click " Apply " button to confirm the setting.

1

3

2

Fig. 29


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2.3.10 Configuring user channel

The user channels are not accessible by default in an Optical Line Repeater (OLR).To allow customer access to the user channel in an OLR, the User Channelparameter must be set accordingly.To configure the user channel access, complete the following steps:1. To open " Shelves - Config " window right-click on the NE bar in the " Module

View " window, and then select " Configuration > Shelves... " menu item.2. In the " User Channel Connection " drop-down list, select the " Drop " menu.3. Click " Apply " to confirm the setting.

1

2

3

Fig. 30


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2.3.11 Setting NE state to commissioned

To set NE state to commissioned, complete the following steps:1. To open " Network Element - Config " window right-click on the NE bar in the

"Module View " window, and then select " Configuration > NE Configuration... "menu item.

2. In the " Status " area, click " Commissioned " button to set the NE state tocommissioned.

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2

Fig. 31


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3 Optical link commissioning

Fig. 32


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3.1 Overview of optical link commissioning

The link control is the core mechanism of the optical link. Most of the link controlfunctions are executed by the main controller card and the time-critical functions bythe Line Amplifier cards. The link control instances for each transmission directionwork independently of each other, therefore each transmission direction must becommissioned separately.Exchange of link control information between Network Elements (NE's) takes placevia the Optical Supervisory Channel (OSC); hence the link commissioning tasks canonly be completed after the OSC channel is functioning.In an optical path, the segment from the booster of an Optical Network Node (ONN)to the preamplifier of the next adjacent ONN constitutes an Optical Multiplex Section(OMS), while the segment from the booster of an ONN-I/T to the preamplifier of thenext adjacent ONN-I/T constitutes a pre-emphasis section. The first ONN within anOMS serves as the link master, transmitting all relevant link control information to thedownstream NE's in this OMS. An optical path may consist of more than one OMS.

TIPThe OMS sections function independently of each other, and hence they must bestarted sequentially, in each transmission direction.

Prior to starting up an OMS, several link control-related parameters must be

configured at the corresponding NE's. Network Element Configuration Files (NCF)provide automatic configuration for most of the settings although other settings suchas OSC trace must be manually configured.

TIP At least one channel is required to start up an OMS.


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Controller Card

OSC OSC OSC

ONN-T OLR ONN-T

OSC OSC OSC

ONN-IController

CardController

CardController

Card

Optical Multiplex Section Optical Multiplex Section

Pre-emphasis section 1 ForwardPre-emphasis section 1 Forward Pre-emphasis section 2 ForwardPre-emphasis section 2 Forward

Pre-emphasis section 2 BackwardPre-emphasis section 2 Backward Pre-emphasis section 1 BackwardPre-emphasis section 1 Backward

Linkmaster

(forward)

Linkmaster

(forward)

Linkmaster

(forward)

Linkmaster

(forward)

Link master

(backward)

Link master

(backward)

Link master

(backward)

Link master

(backward)

Fig. 33 Overview of optical link commissioning


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3.2 Pre-emphasis schemes

A customer network is planned in TransNet based on one of the followingcharacteristics: Maximum reach (all channels equipped with Variable Optical Attenuators (VOA); Reduced reach with the possibility for later automation (all channels equipped with

VOA's); Reduced reach with no automation (a mixture of channels equipped with VOA's

and channels equipped with fixed attenuators).The link optimization method to use depends mainly on how the network wasplanned in TransNet. In the current release, two pre-emphasis methods are offeredfor link optimization:

3.2.1 Pre-calculated pre-emphasis with measurement

Pre-calculated pre-emphasis with measurement consists in adjusting the powerlevels of all ONN-T/I channels to the TransNet pre-calculated values. Pre-calculatedpre-emphasis with measurement must be performed before link start-up and afterchannel upgrade/channel downgrade operations at the transmitting ONN-T/I NE. Anexternal OSA is required for measuring the spectrum power levels at the LAx cards ofthe transmitting ONN-T/I.

TransNet calculates the reference power values at the multiplexer input, based onthe End-of-Life (EOL) performance criteria. These values are specified in theTransNet Commissioning Report.During the commissioning phase, these power values are set by: Using the appropriate attenuators/attenuation patch cords (for channels with fixed

attenuators);or Adjusting the VOA at the multiplexer input of the Tx ONN.

Once a power adjustment is performed at the Tx ONN, channels equipped withVOA's are automatically adjusted, while those with fixed attenuators are manuallyadjusted by the commissioning team.


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Pre-calculated pre-emphasis with measurement :Pre-calculated pre-emphasis with measurement :

Pre-calculated pre-emphasis with measurement must be performedbefore link start-up.

Pre-calculated pre-emphasis with measurement must be performedafter channel upgrade/channel downgrade operations.

An external OSA is required for measuring the spectrum power levelsat the LAx cards of the transmitting ONN-T/I.

Fig. 34 Pre-calculated pre-emphasis with measurement_1

Controller Card

In-line amplifier

OSA

Measured results

Controller Card

ONN-T

booster

2.5G

2.5G A t t e n u a t o r .

T r a n s p o n

d e r

Filter

Controller Card

Pre-amplifier

2.5G

2.5G

A t t en u a t or .

T r an s p on d er Filter

ONN-TOLR

Pre-calculated pre-emphasis with measurementPre-calculated pre-emphasis with measurement

Pre-emphasis sectionPre-emphasis section

LinkMaster Link

Master VOAs or fixed

attenuators have to

be adjusted here

VOAs or fixedattenuators have to

be adjusted here

Fig. 35 Pre-calculated pre-emphasis with measurement_2


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3.2.2 Enhanced pre-emphasis (manual)

Once the link has been sequentially started, may need to be further optimized, viaenhanced pre-emphasis.Enhanced pre-emphasis must be performed in the following cases: The channel count in the pre-emphasis section equals 16, 23, 32 or 40 (i.e. delta

power between these channel counts should be less than 2 dB). After upgrading several channels, the above channel count limit was exceeded

and more channels need to be upgraded.

External OSA's are required to measure the spectrum power at the transmitting andthe receiving ONN-T/I NE's. Measurement of the near-end and far-end spectrums

must be performed within a window of 5 minutes. Therefore a technician must bestationed at each end terminal when executing this procedure, with the capability tocommunicate the measured values. The OMS within this pre-emphasis section mustbe in state "Running".Enhanced pre-emphasis has the advantage that the penalty is reduced. It offers thecapability to have more than 15 channels in the system.

3.2.3 Which pre-emphasis scheme should be used?

The pre-emphasis scheme to use depends on how the network was planned inTrans-Net. The following table shows the relation between the network goal andwhich preemphasis to use.

Network goal Pre-emphasis scheme

Maximum reach Prior to link start-up, pre-calculated pre-emphasis withmeasurement is required. After channel upgrades, pre-calculatedpre-emphasis is required while the channel count < 16. Once achannel count of 16 is exceeded, enhanced pre-emphasis isrequired. Channels require equipping with VOA's.

Reduced reach,with futureautomation

Pre-calculated pre-emphasis with measurement is required priorto link start-up and after channel upgrade. Once a channel countof 16 is exceeded, enhanced pre-emphasis is required. Channelsrequire equipping with VOA's.

Reduced reach,no automation

Pre-calculated pre-emphasis with measurement is required priorto link start-up and after channel upgrade.


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Enhanced pre-emphasis (manual):Enhanced pre-emphasis (manual):

Enhanced pre-emphasis may be required for further optimization. Enhanced pre-emphasis must be performed if the channel count

in the pre-emphasis section equals 16, 23, 32 or 40. Enhanced pre-emphasis must be performed, if after upgrading several

channels, the above mentioned channel count limit was exceeded. An external OSA is required for measuring the spectrum power levels

at the transmitting and the receiving ONN-T/I NE's.

Fig. 36 Enhanced pre-emphasis (manual) _1

Controller Card

In-line amplifier

OSA

Measured results

Controller Card

ONN-T

booster

2.5G


T r a n s p o n

d e r

Filter

Controller Card

Pre-amplifier

2.5G

2.5G

A t t en u a t or .

T r an s p on d er Filter

ONN-TOLR

Enhanced pre-emphasis (manual)Enhanced pre-emphasis (manual)


LinkMaster Link

Master VOAs have to

be adjustedhere

VOAs have tobe adjusted

here

OSA

Measured results

Fig. 37 Enhanced pre-emphasis (manual) _2


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3.3 Optical link commissioning strategy

A sequence of tasks must be executed when commissioning and optimizing anoptical link. Some of the link commissioning procedures, such as pre-calculated pre-emphasis with measurement must be executed on-site. To avoid excessive costsassociated with onsite commissioning, the order in which these procedures areexecuted at each NE site must be carefully planned based on the available networktopology.

Optical link commissioning in a linear network.The Optical link commissioning in a linear configuration, starts at one end of the linkand proceeds to the next adjacent ONN, until all OMS is started up.If the channel count has not yet reached 16, 23, 32 or 40, enhanced pre-emphasiscan be delayed to a later time when the channel count has reached these limits, viachannel upgrades.

Optical link commissioning in a ring network.To select an NE to start the optical link commissioning in a ring configuration, followthis conditions: No express channels are present at this NE.

This NE has the biggest number of add channels. If condition #1 cannot be met, then this NE should have the least number of

express channels.Once the NE is selected, the direction to proceed depends on which of the twotransmission directions (clockwise or counter-clockwise) results in the lesser numberof trips to the NE sites. NE's with both add/drop and express traffic must be visitedtwice; the first time to adjust the available add/drop channel attenuators, the secondtime to adjust the express attenuator, once the express channels from neighboringlinks are running.

Optical link commissioning in a mesh network.To select an NE to start the optical link commissioning in a mesh configuration, followthis conditions: This is a terminal (ONN-T), and has a new channel. This NE has the most number of add channels. This NE has the least number of express channels.NE's with both add/drop and express traffic must be visited twice; the first time toadjust the available add/drop channel attenuators, the second time to adjust the

express attenuator, once the express channels from neighboring links are running.


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Optical link commissioning in a linear networkOptical link commissioning in a linear network

The Optical link commissioningin a linear configuration, starts

at one end of the link andproceeds to the next adjacentONN, until all OMS is started up.

Fig. 38 Optical link commissioning in a linear network

Optical link commissioning in a ring networkOptical link commissioning in a ring network

1. No express channels are present at this NE.2. This NE has the biggest number of add

channels.3. This NE has the least number of express

channels.

??

Fig. 39 Optical link commissioning in a ring network

Optical link commissioning in a mesh networkOptical link commissioning in a mesh network

1. Is this a terminal (ONN-T), andhas a new channel ?

2. Is this NE has the most numberof add channels ?

3. If this NE has the least number ofexpress channels???

Fig. 40 Optical link commissioning in a mesh network


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3.4 Optical link commissioning procedures

The following steps have to be performed before, during and after starting up the link.

1. Verifying NE commissioning status;2. Verifying Network Time Protocol status;3. Verifying transponder settings;4. Updating the channel count;5. Performing pre-calculated pre-emphasis with measurement;6. Start-up the OMS;7. Checking Interstage Loss;

8. Checking span loss;9. Performing enhanced pre-emphasis (manual);10. Adjusting drop channels;11. Clearing NE logs;12. Verifying alarm status.


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Main Steps of the Optical Link CommissioningMain Steps of the Optical Link Commissioning

1. Verifying NE commissioning status1. Verifying NE commissioning status

2. Verifying Network Time Protocol status2. Verifying Network Time Protocol status

3. Verifying transponder settings3. Verifying transponder settings

5. Performing pre-calculated pre-emphasis5. Performing pre-calculated pre-emphasis

4. Updating the channel count4. Updating the channel count

6. Start-up the OMS6. Start-up the OMS

8. Checking span loss8. Checking span loss

10. Adjusting drop channels10. Adjusting drop channels

7. Checking Interstage Loss7. Checking Interstage Loss

9. Performing enhanced pre-emphasis9. Performing enhanced pre-emphasis

11. Clearing NE logs11. Clearing NE logs

12. Verifying alarm status12. Verifying alarm status

Fig. 41 Main Steps of the Optical Link Commissioning


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3.4.1 Verifying NE commissioning status

Each NE in the commissioned link need to be checked to ensure that the correctNCF file has been downloaded and swapped successfully. This is indicated by thevalue of the Commissioning Status parameter of the NE.To verify the NE commissioning status, complete the following steps:1. To open " Network Element - Config " window right-click in the " Module View "

on the Network Element bar and select " Configuration > NE Configuration... "menu item.

2. The Commissioning Status parameter should have value " Commissioned "mean that associated NCF file was loaded to the system and activated.

2

1

Fig. 42


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3.4.2 Verifying Network Time Protocol status

This procedure is optional, only applicable to NE's used as primary DHCP server. Toensure the NTP is working in all NE's along the link, complete the following steps:1. To open " Network Time Protocol - Config " window right-click on the Network

Element bar in the " Module View " of the LCT, and select " Configuration >Network Time Protocol... " menu item.

2. Verify the NTP status. A " *" next to a given NTP entry indicates NTP is workingwith the NTP server IP address shown. A " +" next to a given NTP entry indicatesthe corresponding NTP server is used as a second or third source.

TIP

Repeat these steps for all NE's that are used as primary or secondary DHCP servers.

2

1

Fig. 43


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3.4.3 Verifying transponder settings

Prior to starting up the link for the first time, verify that patch cords are properlyconnected between transponders and their associated multiplexer/demultiplexercards. For each transponder, ensure that The Line Out / Line In ports are connectedto the corresponding input / output port of the multiplexer with the correct attenuator,as given in the TransNet cabling plan.In addition, line side parameters of the transponders must be checked.

For I01T10G cards, execute the following steps:1. To open " Line Traffic - Config " window, right-click on the I01T10G replica in the

"Module View ", and select " Traffic > Optical Channel > Configuration... " menuitem.

2. Select the " Decision Optimization Enabled " check box and set the"Supervision Mode " to " Automatic " in the " Snk " area.

3. In the " Src " area, verify that the " Laser State " field indicates " Enabled ". If thisfield indicates " Disabled ", select the " Laser Enabled " check box to switch on thelaser and then click " Apply " button to confirm the settings.

For I04T2G5 cards, execute the following steps:1. To open " Line Traffic - Config " window, right-click on the I04T2G5 replica in the

"Module View ", and select " Traffic > Optical Channel > Line #1 >

Configuration... " menu item.2. In the " Src " area, verify that the " Laser State " field indicates " Enabled ". If this

field indicates " Disabled ", select the " Laser Enabled " check box to switch on thelaser.

3. In the " Snk " area, set the " Supervision Mode " to " Automatic " from the pull-down menu and then click " Apply " button to confirm the settings.

TIPRepeat these steps for all line ports of all transponder cards that have been plannedfor the optical line commissioning.


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2

1

3

Fig. 44

2

1

3

Fig. 45


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3.4.4 Updating the channel count

Since the exact channel count is not automatically detected, it is recommended to setthis value at the transmitting ONN-T/I, prior to performing pre-calculated pre-emphasis with measurement (when the Link Status is Running) and enhanced pre-emphasis (manual).

TIPThe wrong channel count value leads to incorrect amplifier settings.

To update the channel count, complete the following steps:1. To open " Traffic Config " window right-click on the LAxB card replica in the

"Module View " window and select " Traffic > Configuration... " menu item.2. In the " Optical Link Control " tab, click the " Recalculate... " button. The " Link

Readjust " window is opened.3. Enter the current channel count in the " Optimize Channel Count " field and then

click " Apply " to confirm the settings.

1

3

2

Fig. 46


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3.4.5 Performing pre-calculated pre-emphasis

Pre-calculated pre-emphasis with measurement consists in adjusting the powerlevels of all ONN-T/I channels to the TransNet pre-calculated values.

An external OSA is required for measuring the spectrum power levels at the LAxBCcards of the transmitting ONN-T/I. To perform pre-calculated pre-emphasis withmeasurement connect an external OSA to "MonSo" port of the LAxBC card at thebeginning of the pre- emphasis section to be commissioned, as it shown in the sketchbelow.

TIPCheck in the appendix of the Optical Link Commissioning "OLC" document for detailson selecting an OSA and measuring the spectrum power.

Controller Card

LAxIC

OSA

Controller Card

ONN-T/I

LAxBC

2.5G


T r a n s p o n d e r

Filter

Controller Card

LAxPC

2.5G

2.5G

A t t en

u a t or .

T r an

s p on

d er Filter

ONN-T/IOLR


LinkMaster Link

Master

MonSo

port

MonSo

port

Fig. 47


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To perform pre-calculated pre-emphasis with measurement, complete the followingsteps:1. To open " Traffic Config " window right-click on the LAxB card replica in the

"Module View ", and select " Traffic > Configuration... " menu item.2. To open " Power Adjust " window click the " Power Adjust... " button in the

"Optical Link Control " tab.

TIPIf the Link Status of this pre-emphasis section is in " Prestart " mode, the LAxB laserswitches on.

3. Wait some minutes and then read spectrum power level results from the OSA

screen.4. In the " Power Adjust " window, for each valid channel enter the measured power

values in the " Measured Power " column and then click on the " Calculate " buttonto start the power adjustment.

TIPThe measured spectrum data can be loaded from a file, using the " Load " button.Please ensure that the selected text file is correct, i.e. only text files with the correctstrings can be loaded.

5. The " Power Adjust - Result " window is opened, once calculation of the deltapower adjustment values is completed.

6. Read the calculated delta attenuation value for each channel, displayed in the"Power Adjust Delta Attenuation " column and do one of the following:

7. For channels with fixed attenuators: if the delta attenuation values are outside therange [-2.5 ... 2.5] dB, replace these attenuators at the "Mux-In" ports. Performanother power adjustment by repeating steps 2 to 6, until this range is reached.a) For channels with VOA's: if the delta attenuation values are outside the range

[- 0.6 dB ... 0.6 dB], perform another power adjustment by repeating steps 2 to6, until this range is reached.

TIPSteps 2 to 6 can be repeated up to five times, in order to reach the target powerrange.


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1

2

Fig. 48

Read spectrumpower level

results from theOSA screen







3

Fig. 49

64

5

Fig. 50


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3.4.6 Start-up the OMS

At this stage the optical link can be started and all NEs in this OMS will be started upin sequence, beginning with the LAxB at the transmitting ONN T/I.

TIPTo start up optical link at least one channel must be present in the OMS.

To start-up optical link, complete the following steps:1. To open " Traffic Config " window right-click on the LAxB card replica in the

"Module View ", and select " Traffic > Configuration... " menu item.2. Prior to starting up the link, the Link Status should be in " Prestart " mode and all

line amplifiers should be switched off. To ensure this, in the " Optical LinkControl " tab click the " Shutdown " button.

3. A warning message window is opened. Click " Yes " to proceed with theshutdown.

4. Verify that Link Status is " Prestart " on the " Traffic - Config " window.5. To open " Link Startup " window click on the " Startup " button.6. Enter the " Link Startup Channel Count " and click " OK " button.

Each line amplifier has to reach a certain level of stability, before the next amplifier inline switches on. The Link Status changes to Startup as soon as the first boosteramplifier has completed its startup.The start-up is successfully completed when the Link Status changes from Startup toRunning. The start-up may take several minutes to complete, depending on thenumber of NE's in this OMS. If the Link Status does not change from Startup toRunning (e.g. change to Prestart), check if any communication or equipment alarmsare currently raised at this OMS.


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1

2

3

Fig. 51

4 56

If the start-up issuccessfully

completed LinkStatus changes fromStartup to Running

If the start-up issuccessfully

completed LinkStatus changes fromStartup to Running

Fig. 52


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3.4.7 Checking Interstage Loss

After the link start, additional post-configuration tasks will need to be performed tooptimize the link.

TIPIf the link is not currently in state running, the following procedures cannot beexecuted. In this case, please first execute the pre-configuration and link start-upprocedures for the given link topology.

TIPThe Interstage Loss (ISL) must be checked at all LAx cards against values specifiedin the TransNet Commissioning Report. The ISL must be read from the LCT GUIwhile the link state is running.

WARNINGIf corrective actions are required, the link must be first shut down for lasersafety purposes.

To check ISL complete the following steps:1. To open " LAx - Config " window right-click on the LAx card replica in the

"Module View " window, and select " Card > Configuration... " menu item.2. Check if the value displayed in the " Interstage Loss " field is within the

minimum/maximum values specified in the TransNet Commissioning report.a) If the current ISL is less than the minimum ISL allowed, check if the correct

attenuation cable or DCM cards are being used and add padding fibers, ifnecessary.

b) If the current ISL is higher than the maximum ISL allowed, clean all fiberconnectors at the LAx ports and reduce/remove the padding fiber, ifnecessary.


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Post-configuration procedures can be executed only if the linkis in state running!!

If corrective actions are required, the link must be first shut downfor laser safety purposes!!

Fig. 53

1

The value displayed in the"Interstage Loss" field

must be checked againstminimum/maximum valuesspecified in the TransNet

Commissioning report.

The value displayed in the

"Interstage Loss" fieldmust be checked against

minimum/maximum valuesspecified in the TransNetCommissioning report.

The value displayed in the"Interstage Loss" field

must be checked againstminimum/maximum valuesspecified in the TransNetCommissioning report.

The value displayed in the

"Interstage Loss" fieldmust be checked against

minimum/maximum valuesspecified in the TransNetCommissioning report.2

Fig. 54


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3.4.8 Checking span loss

The span attenuation must be checked at the Rx ONN/OLR against the End-of-Life(EOL) span attenuation values specified in the TransNet Commissioning Report. Thisprocedure applies to LAxPC and LAxIC cards.

TIPThe span attenuation must be read from the LCT GUI while the link state is"Running".

To check the span losses complete the following steps:1. To open " LAxxC - Config " window right-click on the LAxxC card replica in the

"Module View " window, and select " Card > Configuration... " menu item.2. Read the " Span Attenuation " and " EOL Span Attenuation Threshold " values

and compare with the BOL span attenuation values listed in the TransNetCommissioning Report.a) If the current span attenuation value is within the EOL - BOL range, corrective

actions are not required for this LAxxC.c) If the current span attenuation is less than the BOL span attenuation specified

in the TransNet Commissioning Report, add padding fiber to the LAxxC-Line2port of the upstream site feeding into this LAxxC card.

d) If the current span attenuation exceeds the EOL span attenuation, clean allfiber connectors between the upstream LAxxC "Out" (LAxBC/LAXIC) and thedownstream LAxxC "In" (LAxPC/LAxIC) ports.

WARNINGIf corrective actions are required, the link must be first shut down for lasersafety purposes.

TIP A Span Loss Low (SLL) alarm would be raised if the current span attenuation is lessthan (EOL Span Attenuation Threshold - 10.0 dB).

TIP A Span Loss High (SLH) alarm would be raised if the current span attenuation isgreater than (EOL Span Attenuation Threshold + 1.0 dB).


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1

Read the "Span Attenuation" and"EOL Span Attenuation

Threshold" values and comparewith the BOL span attenuationvalues listed in the TransNet

Commissioning Report.










2

Fig. 55


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3.4.9 Performing enhanced pre-emphasis

Once the entire pre-emphasis section (ONN-T/I -> ONN-T/I) has been started, theoptical channels may need to be further optimized, via enhanced pre-emphasis.Enhanced pre-emphasis must be performed if the channel count in the pre-emphasissection equals 16, 23, 32, 40 or after upgrading several channels, the abovementioned channel count limit was exceeded and more channels need to beupgraded.

External OSA's are required to measure the spectrum power at the transmitting andthe receiving ONN-T/I NE's. Measurement of the near-end and far-end spectrumsmust be performed within a window of 5 minutes. Therefore a technician must bestationed at each end of the pre-emphasis section when executing this procedure,with the capability to communicate the measured values. To perform enhanced pre-emphasis connect an external OSA to "MonSo" port of the LAxxC card at thebeginning and at the end of the pre- emphasis section to be commissioned, as itshown in the sketch below.

TIPThe OMS within this pre-emphasis section must be in state "Running".

To perform enhanced pre-emphasis (manual), complete the following steps:1. To open " Traffic Config " window right-click on the LAxB card replica in the

beginning of in the " Module View " and select " Traffic > Configuration... " menuitem.

2. To open " Power Pre-emphasis " window click " Power Pre-emphasis " button inthe " Optical Link Control " tab.


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Controller Card

In-line amplifier

OSA

Measured results

Controller Card

ONN-Tbooster

2.5G


T r a n s p o n d e r

Filter

Controller Card

Pre-amplifier

2.5G

2.5G

A t t en

u a t or .

T r an

s p on

d er Filter

ONN-TOLR

The OMS within this pre-emphasis section must be in state "Running !!

Enhanced pre-emphasis must be performed i f the channel count in the pre-emphasis section

equals 16, 23, 32, 40 or after upgrading several channels, the above mentioned channel countlimit was exceeded and more channels need to be upgraded !!

The OMS within this pre-emphasis section must be in state "Running !!

Enhanced pre-emphasis must be performed i f the channel count in the pre-emphasis section

equals 16, 23, 32, 40 or after upgrading several channels, the above mentioned channel countlimit was exceeded and more channels need to be upgraded !!


LinkMaster Link

Master

OSAMeasured results

MonSoport

MonSoport

MonSoport

MonSoport

Fig. 56

1

2

Fig. 57


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3. Read spectrum power level results of valid channels from the OSA screen in thenear-end and the far-end spectrums.

4. In the " Power Pre-emphasis " window, for each valid channel enter the

measured power values in the " Near End Tx " - > (transmitting ONN powerlevels) and " Far End Rx " -> (receiving ONN power levels) columns.

TIPThe measured spectrum data can be loaded from a file, using the " Load " button.Please ensure that the selected text file is correct, i.e. only text files with the correctstrings can be loaded.

5. Click on the " Calculate " button to start the pre-emphasis.

6. The " Power Pre-emphasis - Result " window is opened, when pre-emphasis iscompleted. The Pre-emphasis Delta Attenuation values are displayed.7. Read the calculated delta attenuation value for each channel, displayed in the

"Power Adjust Delta Attenuation " column and do one of the following:a) For channels with fixed attenuators: if the delta attenuation values are outside

the range [-2.5 ... 2.5] dB, replace these attenuators at the " Mux-In " ports ofthe transmitting ONN-T/I. Perform another power adjustment by repeatingsteps 2 to7, until this range is reached.

e) For channels with VOA's: if the delta attenuation values are outside the range[- 0.6 dB ... 0.6 dB], perform another power adjustment by repeating steps 2

to7, until this range is reached.

TIPSteps 2 to 7 can be repeated up to five times, in order to reach the target powerrange.


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Read spectrum power levelresults of valid channels from

the OSA screen in the near-endand the far-end spectrums.







3

Fig. 58

5 4

6

7

Fig. 59


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3.4.10 Adjusting drop channels

At the receiving ONN-T/I, the power level of each drop channel must be manuallyadjusted, if the power level at the receiving transponder exceeds the range specifiedin the TransNet Commissioning Report.

Verifying the power levelTo verify the power level of the drop channels, complete the following steps:1. To open " Line Traffic - Config " window of the transponder card at the receiving

(dropping) NE, right-click on the transponder card replica and select " Traffic >Optical Channel > Configuration... " menu in case of I01T10G card, or " Traffic> Optical Channel > Line #x -> Configuration... " menu item in case of I04T2G5card.

2. Read the Optical Input Power value under the Optical Channel tab:a) If the Optical Input Power value is within the range specified in the TransNet

Commissioning Report, the received power level of this transponder does notneed to be adjusted.

b) If the Optical Input Power value exceeds the range specified in the TransNetCommissioning Report, received power level of this transponder has to beadjusted.

Adjusting power levelTo adjust the received power level of the transponder, complete the following steps:3. If a fixed attenuator is

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06 Tr3583eu00tr 0101 System Commissioning

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