Avaya 03-300430 Benutzerhandbuch

f. Error Type 769: the standby SNC determined that there is a problem communicating with 

the active SNC through the connecting serial channel.

1. If the active SNC (yellow LED is on) has this error, escalate the problem. (The status 

switch-node command also shows the active and standby SNCs.)

2. Use display errors to check the error log. If more than one SNI in the switch node 

carrier has problems communicating with the active SNC (that is, Error Type 257 is 
logged against SNI-BD), then replace the active SNC.

3. If a single SNI has SNI-BD error 257, replace the SNI circuit pack.

4. Replace the standby SNC circuit pack.

5. Retry test board. 

Use 

 to check the error log

. If this error is still in the 

error log, replace the active SNC.

g. Error Type 1025: the firmware detects problems with the various hardware circuit monitors 

(for example, loss of reference monitor) that verify correct operation of the reference links.

1. Replace the SNC circuit pack.

h. Error Type 1281: the firmware detects problems with the interface used to track the status 

of both SNCs when there are duplicated SNCs in a switch node carrier. When this error 
occurs, software may have incorrect information from SNC firmware for which SNC is 
active. Therefore, the yellow LEDs on the SNCs must be checked in the following repair 
procedure and status switch-node should not be used when this Error Type occurs.
If the switch node carrier has duplicate SNCs:

1. Replace the SNC that does not have its yellow LED lit.

2. Retry test board. 

Use 

display errors to check the error log. If the error is still in the 

error log, replace the SNC that has its yellow LED lit.

If the switch node carrier has only one SNC, replace the SNC.

i. Error Type 1537: loss of signal from the SNC on-board Stratum-3 oscillator detected by the 

firmware.

1. Replace the SNC circuit pack.

j. Error Type 1793: firmware detects failure of the phase-locked loop, inability to lock, or 

failure of the clock drivers and the problem is on-board.

1. Replace the SNC circuit pack.

2. If the error persists, follow normal escalation procedures.

k. Error Type 2049: firmware detects problems with the microcontroller used for Timing 

Priority Number processing.

1. Replace the SNC circuit pack.