Demand test descriptions and error codes - Avaya Support

e. Error Type 513: the active SNC determines that there is a problem communicating with the
standby SNC via the connecting serial chel.
If the switch node carrier is administered with duplicate SNCs:
1. If the standby SNC (the one with its yellow LED off) has this error, escalate the
problem. (status switch-node also shows the active and standby SNCs.)
2. If the system originally had duplicate SNCs and the standby SNC was removed and
never replaced and the active SNC has not been reset after the standby SNC was
removed, this error will occur.
If you do not intend to replace the SNC:
a. Remove the standby SNC from circuit pack administration using
change circuit-pack.
b. If the problem persists, replace the active SNC circuit pack. Otherwise, insert an
SNC circuit pack.
3. Use display errors to check the error log. If SNIs in the switch node carrier also
have problems communicating with the active SNC (i.e., error code 257 is logged
against SNI-BD), then replace the active SNC.
4. Replace the standby SNC circuit pack.
5. Retry test board. Use display errors to check the error log. If this error is still in
the error log, replace the active SNC.
If the switch node carrier is administered with only one SNC:
● If step 2 above does not apply, replace the SNC.
f. Error Type 769: the standby SNC determined that there is a problem communicating with
the active SNC through the connecting serial chel.
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 display errors 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
that verify correct operation of the reference links. Replace the SNC circuit pack.
852 Maintenance Alarms for Communication Manager, Media Gateways and Servers