Important!

An OMD circuit pack with an available OCH port is required in a Function/Growth slot at each node that terminates the OC-3/12/48 span to be upgraded.

If required, install an OMD circuit pack in a Function/Growth slot.

Reference:

Procedure 4-25: Install DWDM optical multiplexer/demultiplexer circuit packs

Important!

An XM10G/8 circuit pack with an available client port is required in a Function/Growth slot at each node that terminates the OC-3/12/48 span to be upgraded.

If required, install an XM10G/8 circuit pack in a Function/Growth slot.

Reference:

Procedure 4-28: Install 10G Muxponder circuit packs

If required, verify the active/standby status of the required OC-3/12/48 port and perform manual switches to switch traffic away from an active OC-3/12/48 port.

Reference:

Procedure 12-27.3: Verify active/standby status of OC-n port

NOTICE Service-disruption hazard

Removing the wrong fiber connections will result in a service interruption.

Using the work instructions, ensure that you remove only the fiber connections for the optical span being upgraded.

Important!

If the OC-3/12/48 port is active for transmission, disconnecting the optical fibers causes transmission switches. Transmission hits (less than 60 ms) will occur for each separate protection switch.

Disconnect the required OC-3/12/48 span fibers from the OLIU circuit pack/pluggable transmission module/port.

Result:

Transmission hits (less than 60 ms) may occur if traffic exists on the OC-3/12/48 port. If through traffic exists (UPSRs and BLSRs only), transmission hits (less than 60 ms) may occur at the nodes where the traffic is added/dropped.

The system reports an inc. OCN LOS alarm for the OC-3/12/48 port when the OC-3/12/48 span fibers are disconnected.

For BLSR protection groups, the system also reports a Line Automatic Switch condition for the OC-48 port.

Alarms may also be reported at other nodes in the network.

At the node at the opposite end of OC-3/12/48 span to be upgraded, repeat Step 1 through Step 4. Then continue with the next step.

If required, establish a DWDM point-to-point network using the span fibers to connect the OTS ports of the OMD circuit packs.

Reference:

Procedure 9-12: Establish DWDM network

Important!

The provisioned Expected Frequency of the OTU2 DWDM pluggable transmission module must match the OCH port frequency. If the provisioned Expected Frequency of the OTU2 DWDM pluggable transmission module and the OCH port frequency are different, attempts to provision an OCH cross-connection will be denied.

If required at the terminating nodes, install/provision the required OTU2 DWDM pluggable transmission module and connect the OTU2 port of the XM10G/8 circuit pack to the required OCH port of the OMD circuit pack to establish a DWDM OTU2 line.

Reference:

Procedure 9-14: Establish DWDM OTU2 line

Important!

The OLIU OC-n rate must match the XM10G/8 circuit pack OC-n client port rate.

At the terminating nodes, install/provision the required OC-n client port/pluggable transmission module and connect the OLIU OC-n port to the XM10G/8 circuit pack OC-n client port to add the OC-3/12/48 signal to the DWDM OTU2/OTS span.

Result:

The inc. OCN LOS alarms clear. Transmission is now supported on the upgraded optical span.

Reference:

Procedure 10-17: Add SONET/GbE/Data client signal

STOP! To complete the upgrade, return to the procedure that directed you to perform this procedure.

End of steps