Using the work instructions, determine the DWDM network configuration and identify the terminating nodes and pass-through nodes (if required) for the optical channel being added.

Important!

It may be helpful to make a sketch of the DWDM network to visualize the path of the optical channel through the network.

At the terminating and pass-through nodes (if required), click the Alarm List button to obtain an NE Alarm List and verify that no alarms are present. Clear all alarms before continuing this procedure.

Reference:

Alcatel-Lucent 1665 Data Multiplexer Extend (DMXtend) Alarm Messages and Trouble Clearing Guide, 365-372-326

Important!

The Expected Frequency of the DWDM-compatible optics on a PTM-based OLIU must match the OCH port frequency. If the Expected Frequency of the of the DWDM-compatible optics and the OCH port frequency are different, attempts to provision an OCH cross-connection will be denied.

The frequencies are not compared if the DWDM compatible signal is terminated by a different network element (alien wavelength).

At the terminating nodes, select View → Equipment to access the required add/drop DWDM pluggable transmission module and verify that the provisioned Expected Frequency matches the OCH port frequency.

If the frequencies do not match, verify the work instructions and resolve mismatch according to local procedures.

If required, select Configuration → Equipment to access the required add/drop DWDM pluggable transmission module and perform additional provisioning.

Reference:

Procedure 4-19: Provision pluggable transmission module

Important!

OCH cross-connections are established between a DWDM-compatible OC-192 OLIU add/drop optical port and an OCH port with the same frequency. The OCH cross-connections are used to inform the network element about manual fiber connections. This allows the network element to enable alarm reporting and variable optical attenuators. The variable optical attenuators are enabled only when an OCH port is the destination of an OCH cross-connection. When an OCH port is the destination of an OCH cross-connection the OCH port state also transitions from no state to the AUTO state.

At the terminating and pass-through nodes (if required), select Configuration → OCH Cross-Connections to access the OCH Cross-Connection Wizard and provision the required OCH cross-connections.

Result:

If the OCH port is the destination of an OCH cross-connection, then the variable optical attenuator and alarm reporting are enabled for the OCH port. The OCH port also transitions from no state to AUTO.

At the terminating and pass-through nodes (if required), select View → Equipment to access the required OCH ports and verify that the OCH port parameters are provisioned correctly.

If required, select Configuration → Equipment to access the required OCH ports and perform additional provisioning.

Reference:

Procedure 4-26: Provision optical channel (OCH) port

Important!

Attenuation is not required at the OMD circuit pack OCH port IN connectors. The circuit pack is equipped with variable optical attenuators and automatic optical power balancing to control the optical power of individual optical channels.

At both terminating nodes, perform the following to connect the optical fibers between the OCH port and the DWDM-compatible OC-192 OLIU add/drop optical port.

• Clean and connect the optical fibers to the required OUT connectors on the OMD circuit pack and the add/drop optical port.

• Measure the optical receive power of the optical fiber at the add/drop optical port using an optical power meter. Select the appropriate LBO to attenuate the receive signal to the middle of the allowable optical receive power range. (Refer to the Alcatel-Lucent 1665 Data Multiplexer Extend (DMXtend) Applications and Planning Guide, 365-372-324, for the SONET optical specifications of the OLIU circuit packs and pluggable transmission modules.)

• Clean and connect the optical fibers to the required IN connectors on the OMD circuit pack and the add/drop optical port.

Reference:

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

At the terminating and pass-through nodes (if required), perform end-to-end OCH line test.

Reference:

Procedure 14-36: Perform end-to-end optical line test on DWDM line

Important!

If the Port Monitoring Mode is provisioned to NMON, the OCH port is not monitored/alarmed and the OCH port will not automatically transition to the IS (in-service) state when a good signal (not LOS) is detected. If the Port Monitoring Mode is provisioned to AUTO, the OCH port automatically transitions to the IS (in-service) state when a good signal (not LOS) is detected, and the OCH port is monitored/alarmed. If the Port Monitoring Mode is provisioned to IS, the OCH port is monitored and alarms are reported.

At the terminating and pass-through nodes (if required), select View → Equipment to access the required OCH ports and verify the value of the Port Monitoring Mode parameter.

If required, select Configuration → Equipment to access OCH ports and change the value of the Port Monitoring Mode parameter.

Reference:

Procedure 4-26: Provision optical channel (OCH) port

End of steps