Procedure 5-70: Clear "inc. VT" conditions/alarms
Overview
Before you begin
Prior to performing this procedure:
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Refer to Before you begin and Required equipment in this chapter.
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Refer to Laser safety and Electrostatic discharge in Chapter 1, Safety.
Steps
Complete the following steps to clear an inc. VT alarm.
1 |
From the WaveStar® CIT System View, click the Alarm List button and locate the inc. VT alarm in the resulting alarm list. | ||||||
2 |
Determine the alarm level(s) for the active inc. VT alarm(s). Clear the alarms in order of severity. | ||||||
3 |
Refer to the Probable Cause column in the alarm list, determine the affected circuit pack, and note the corresponding AID. | ||||||
4 |
Note the source address of the VT alarm/condition reported (for example, m1-1-1-1-1). Based on the circuit layout or other office records, determine the other shelf where that time slot is supposed to be originated (cross-connected to a DS1 termination). | ||||||
5 |
Log in to the originating shelf. Reference: Procedure 6-2: Connect Personal Computer (PC) and establish WaveStar® CIT session | ||||||
6 |
From the System View, select the View → Cross-Connections. | ||||||
7 |
Are there incomplete or incorrect cross-connections?
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8 |
From the System View, select Configuration → Cross-Connections to access the Cross-Connection Wizard and perform the required provisioning. | ||||||
9 |
From the System View, click the Alarm List button and click Refresh. | ||||||
10 |
Is the inc. VT alarm still present?
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11 |
One at a time, log in to every shelf where pass-through cross-connections exist for the service (for example, m1-1-1-1-1 to m2-1-1-1-1 for VT1.5). Select the View → Cross-Connections command from the System View at each shelf to determine if the time slot identified in Step 4 is cross-connected as specified in circuit layout or other office records. | ||||||
12 |
At any shelves with missing cross-connections, select Configuration → Cross-Connections to access the Cross-Connection Wizard and provision the correct pass-through cross-connection (for example, m1-1-1-1-1 to m2-1-1-1-1 for VT1.5). | ||||||
13 |
From the System View, click the Alarm List button and click Refresh. | ||||||
14 |
Is the inc. VT alarm still present?
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15 |
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) | ||||||
16 |
From the System View, click the Alarm List button and click Refresh. | ||||||
17 |
Is the inc. VT alarm still present?
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18 |
Is the OLIU circuit pack equipped with pluggable transmission modules?
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19 |
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 local pluggable transmission module. Reference: Procedure 6-5: Replace pluggable transmission module | ||||||
20 |
From the System View, click the Alarm List button and click Refresh. | ||||||
21 |
Is the inc. VT alarm still present?
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22 |
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 terminating OCN OLIU circuit pack. Reference: End of steps |
