To verify that no alarms are present in the network, click Alarm List in the top right corner of the System View at each node.

Important!

To retrieve a map of the SONET/SDH network, select Administration → OSI Routing Map and Administration → OSI Neighbor Map.

Determine which Alcatel-Lucent 1850 TSS-5 node is being discontinued.

Verify that the optical loss budget will not be exceeded by removing this node.

Reference:

Refer to the Alcatel-Lucent 1850 Transport Service Switch (TSS-5) Product Information and Planning Guide for the optical specifications of the circuit packs/pluggable transmission modules.

From the System View menu at each node, select View → Timing/Sync and verify the operational synchronization mode. If required, reconfigure the timing of the network using Configuration → Timing/Sync.

Important!

Reconfiguring network timing may cause shelves to temporarily go into the holdover timing mode.

Reference:

Procedure 6-5: Network synchronization provisioning

NOTICE Service-disruption hazard

Discontinuing a node with active add/drop traffic will result in a service interruption.

Ensure that ALL service to/from the UPSR/SNCP is removed from the node before continuing.

At the node being discontinued, verify that all service to/from the UPSR/SNCP has been removed. From the System View menu, select View → Cross-Connections and verify that there are no add/drop cross-connections to the UPSR/SNCP. If required, select Configuration → Cross-Connections to access the Cross-Connection Wizard and delete any existing add/drop cross-connections to the UPSR/SNCP.

If the node being discontinued is an AGNE, establish another node in the network as an AGNE (if required). If required, disable the AGNE at the node being discontinued.

Important!

At the new AGNE, the Remote NE Status parameter must be enabled prior to designating the AGNE(s).

Reference:

Procedure 7-7: Set NE defaults — alarm gateway, alarm group, remote NE status, FTP/FTTD, security and history log thresholds

If the node being discontinued is the gateway host node, establish another gateway host node with an IP address for the network element and the required IP addresses in the gateway host file.

Reference:

Procedure 7-14: Provision/enable/disable the NE as a TL1 TCP/IP GNE

Important!

Refer to the example in Figure 9-2, Example of discontinuing a node when performing this step. The example assumes that the UPSR/SNCP is established using the Main-1 port pair of Alcatel-Lucent 1850 TSS-5 nodes. However, the Main-1 port pair at an Alcatel-Lucent 1850 TSS-5 may also be connected with an Alcatel-Lucent 1850 TSS-5 Main slot pair (equipment protected), Alcatel-Lucent 1665 DMX (Main/Function/Growth slot pair) and/or a Alcatel-Lucent 1665 DMXtend (Main/Function/Growth slot pair).

At each node in the UPSR/SNCP, select Reports → Path Protection List to verify that no Forced or Lockout path protection switches exist.

If required, select Fault → Protection Switch → Path Protection → Switch Type Clear to clear any existing Forced or Lockout path protection switches. (See example in Figure 9-2, Example of discontinuing a node Figure A.)

Figure 9-2: Example of discontinuing a node

m1 = port Main-1-1 (equipment unprotected) or Main-1-1 or Main-1-2 (equipment protected)

m2 = port Main-1-2 (equipment unprotected) or Main-2-1 or Main-2-2 (equipment protected)

Figure A shows the node to be discontinued (NE5) from the UPSR/SNCP.

Figure B shows the removal of the optical fibers associated with Ring (Path) 2 and the connection of optical fiber associated with Ring (Path) 2 fiber from NE1 to NE2.

Figure C shows the removal of the optical fibers associated with Ring (Path) 1 and the connection of optical fiber associated with Ring (Path) 1 fiber from NE2 to NE1.

NOTICE Service-disruption hazard

Removal of wrong fiber connections will result in a service interruption.

Ensure that you remove only the fiber connections for the optical span being discontinued.

Important!

When the optical fibers are disconnected, the system performs an automatic protection switch and subsequent transmission hits (less than 60 ms) will occur.

Remove the optical fiber from NE1 M1 transmit to NE5 M2 receive and the optical fiber from NE5 M1 transmit to NE2 M2 receive (only). ( Figure 9-2, Example of discontinuing a node Figure A). These optical fibers are associated with Ring (Path) 2.

Result:

Automatic path protection switching will occur at nodes in the ring. Ring (Path) 1 is active.

Connect the fiber to NE1 M1 transmit. ( Figure 9-2, Example of discontinuing a node Figure B). At NE2 M2 receive, measure the optical power level in the receive direction, attenuate if necessary, and connect the fiber.

Reference:

Procedure 14-4: Perform connection and verification of optical facility

NOTICE Service-disruption hazard

Removal of wrong fiber connections will result in a service interruption.

Ensure that you remove only the fiber connections for the optical span being discontinued.

Important!

When the optical fibers are disconnected, the system performs an automatic protection switch and subsequent transmission hits (less than 60 ms) will occur.

Remove the optical fiber from NE2 M2 transmit to NE5 M1 receive and the optical fiber from NE5 M2 transmit to NE1 M1 receive. ( Figure 9-2, Example of discontinuing a node Figure B).

Result:

Automatic path protection switching will occur at nodes in the ring.

Connect the fiber to NE2 M2 transmit ( Figure 9-2, Example of discontinuing a node Figure C). At NE1 M1 receive, measure the optical power level in the receive direction, attenuate if necessary, and connect the fiber.

Reference:

Procedure 14-4: Perform connection and verification of optical facility

To verify that no alarms are present in the network, click Alarm List in the top right corner of the System View at each node.

Is the removed shelf to be powered down?

If required to prevent alarms, select Configuration → Timing/Sync to provision the system Timing Mode parameter as Free Running.

Reference:

Procedure 6-5: Network synchronization provisioning

If required to prevent alarms, select Configuration → DCC Terminations to disable the DCC Termination State parameter on the ports removed from service.

Reference:

Procedure 6-4: Provision DCC terminations

If the shelf is being removed from service, select View → Cross-Connections and verify that there are no cross-connections on the shelf. If required, select Configuration → Cross-Connections to access the Cross-Connection Wizard and delete any existing cross-connections.

Update the internal equipment list by either pressing the UPD/INIT push-button on the SYSCTL circuit pack or selectings Configuration → Update System → Update All.

To verify that no alarms are present, click the Alarm List button from the System View menu.

The Alcatel-Lucent 1850 TSS-5 node is now removed from the UPSR/SNCP.

End of steps