Avaya 03-300430 User Manual

f. Error Type 769: this Error Type corresponds to FAIL code 8 of the Stratum-3 Clock Alarm 

Query test (#649): either reference B failed or the CI card B failed.

g. Error Type 1025: this Error Type corresponds to FAIL code 16 of the Stratum-3 Clock Alarm 

Query test (#649): every power supplied failed.

A Minor alarm results if the Stratum-3 clock can still provide timing to the switch; otherwise, 
a Major alarm will be raised because the Stratum-3 clock is not providing timing and the 
switch is referencing the local oscillator on the TN780 Tone-Clock circuit pack. If only the 
active TN780 Tone-Clock circuit pack is faulty, the standby TN780 Tone-Clock circuit pack 
becomes active and remains synchronized to the Stratum-3 clock. When the system 
switches to the standby Tone-Clock circuit pack, the alarm is resolved, and a TDM-CLK 
alarm is raised to indicate a possible problem on the TN780 Tone-Clock circuit pack.

If the alarm is MINOR:

1. Look for a red LED on either or both TOC cards. 

2. If there is a red LED, replace the card. If there is no red LED, use the Stratum-3 Wiring 

Guide, and check that the wiring installation is correct. 

3. After replacing the card or correctly rewiring the installation, clear the alarm by issuing 

disable synchronization-switch, followed by enable 
synchronization-switch. The latter procedure causes synchronization software to 

switch back to using the Stratum-3 clock again. 

4. Wait 2 minutes and run status synchronization. 
5. If Maintenance Name on the status screen shows “STRAT-3,” the problem is resolved.

CAUTION:

The disable synchronization-switch command followed by enable 
synchronization-switch may cause slip alarms. The circuit packs that can 

experience slips and the associated error log entry for slips are listed in 

DS1 Interface

DS1-BD

3073 to 3160

Expansion Interface

EXP-INTF

2305

Switch Node Interface

SNI-BD

1537

Tone-Clock

TDM-CLK

1025

UDS1 Interface

UDS1-BD

3073 to 3160