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Communication Manager Maintenance-Object Repair Procedures
2172 Maintenance Procedures for Avaya Communication Manager 3.0, Media Gateways and Servers
Notes:
a. Error Type 1: problem with the primary DS1 reference. It is cleared when the primary
reference is restored. The following steps should give an indication of the source of the
problem:
1. Check if the primary DS1 interface circuit pack is inserted in the carrier using list
configuration board location.
2. Check the connection of the cable supplying the external timing source to the primary
DS1 interface circuit pack.
3. Test the primary DS1 interface circuit pack using test board location long. Check
the Error Log for DS1-BD errors and refer to the DS1-BD (DS1 Interface Circuit Pack)
Maintenance documentation to resolve any errors associated with the primary DS1
interface circuit pack. If no errors are listed in the Error Log for the primary DS1 interface
circuit pack, continue with the following steps.
4. Test the active Tone-Clock circuit pack in the master port network using test tone/
clock location long. Check the Error Log for TDM-CLK errors and verify that TDM
Bus Clock Test #148 passes successfully. If Test #148 fails with an Error Code 2 through
32, refer to TDM-CLK (TDM Bus Clock)
on page 2252 to resolve the problem. If not,
continue with the following steps.
5. Execute disable synchronization-switch and the enable
synchronization-switch. These two commands (when executed together) switch
the system synchronization reference to the primary DS1 interface circuit pack. Check
the Error Log and execute the status synchronization command to verify that the
primary DS1 interface circuit pack is still the system synchronization reference. If the
primary DS1 interface circuit pack is not the system synchronization reference, continue
with the following step.
b. *Error Type 18: Synchronization Maintenance has been disabled using disable
synchronization-switch. Execute enable synchronization-switch to enable
Synchronization Maintenance reference switching and to resolve this alarm.
c. Error Type 257: problem with the secondary DS1 reference. It is cleared when the
secondary reference is restored. Refer to note (a) to resolve this error substituting
secondary for primary in the preceding resolution steps.
d. Error Type 513: the Tone-Clock circuit pack is providing the timing source for the system.
The primary and secondary (if administered) are not providing a valid timing signal.
Investigate errors 1 and 257 to resolve this error.
e. Error Type 769: excessive switching of system synchronization references has occurred.
When this error occurs, synchronization is disabled and the Tone-Clock circuit pack (in the
master port network) becomes the synchronization reference for the system. Execute the
following steps to resolve this error:
1. Check for timing loops and resolve any loops that exist.
2. Test the active Tone-Clock circuit pack in the master port network using test tone/
clock location long. Check the Error Log for TDM-CLK errors and verify that TDM