From the WaveStar^® CIT System View, click the Alarm List button and locate the section DCC channel failed alarm in the resulting alarm list and note the corresponding AID.

From the System View, select View → DCC Terminations.

Result:

The View DCC Terminations window opens.

Important!

To enable OSI over DCC operation, the OSI over DCC must be enabled and the LAPD Role must be provisioned differently at each end of an optical span. For example, if the LAPD Role is provisioned user-side at one end of an optical span, then the LAPD Role must be provisioned network-side at the other end of the optical span.

Compare the information in the View DCC Terminations window with office records. Are the DCC termination parameters provisioned appropriately for the affected DCC port according to office records?

Select Configuration → DCC Terminations to access the required DCC ports and provision the DCC termination parameters according to office records.

From the System View, click the Alarm List button and click Refresh.

Is the section DCC channel failed alarm still present?

Check the optical signal level and clean the cable ends if needed. If no problem is found, check the line build-outs (LBOs).

Reference:

Procedure 6-11: Clean optical fibers, dual LC adapters and LC lightguide buildouts (LBOs)

From the System View, click the Alarm List button and click Refresh.

Is the section DCC channel failed alarm still present?

Are the near-end and the far-end OLIU circuit packs equipped with pluggable transmission modules?

NOTICE Service-disruption hazard

Disconnecting cables and/or replacing pluggable transmission modules may disrupt service.

Before taking action, determine the extent of service disruption caused by disconnecting cables or replacing a pluggable transmission module. Then, perform the action(s) deemed appropriate in light of the traffic being carried and the nature of the failure.

Replace the affected near-end and then the far-end pluggable transmission module.

Reference:

Procedure 6-5: Replace pluggable transmission module

From the System View, click the Alarm List button and click Refresh.

Is the section DCC channel failed alarm still present?

NOTICE Service-disruption hazard

Disconnecting cables and/or replacing circuit packs may disrupt service.

Before taking action, determine the extent of service disruption caused by disconnecting cables or replacing a circuit pack. Then, perform the action(s) deemed appropriate in light of the traffic being carried and the nature of the failure.

Replace the near-end and then the far-end OLIU circuit pack.

Reference:

• Procedure 6-3: Replace high-speed main OLIU circuit pack

• Procedure 6-4: Replace low-speed function unit OLIU circuit pack

From the System View, click the Alarm List button and click Refresh.

If the section DCC channel failed alarm is still present, contact your next level of support.

End of steps