Demand test descriptions and error codes - Avaya Support

h. Error Type 1025: Processor/Tone-Clock circuit on-board maintenance has detected one or
more clock slips, timing differences between its internal reference source and the
synchronization signal provided by the master Tone-Clock. Although no clock slip errors are
expected during normal operation, both manual and automatic interchanges of Tone-Clock
circuit, synchronization references, and PNCs could result in clock slip counts.
If Error Type 1281 also is logged for the same Tone-Clock circuit, it is related to this problem
and should be corrected first. Otherwise, continue with the following procedure.
1. Use test tone-clock location, and examine the results of Test #149 to see if
slip errors still appear. If no new slip errors are reported, and if these errors are not
causing a TDM-CLK alarm, they may be ignored. Use test tone-clock
location long clear to clear the errors.
2. Otherwise, enter display errors, and follow corrective procedures for any other
TDM-CLK, TONE-BD, SYNC, DS1C-BD, EXP-INTF, SNC-BD, and SNI-BD errors
logged, except for those in Table 261: Error Log Entries for Slip Errors.
Table 261: Error Log Entries for Slip Errors
Circuit Pack Name Error Log Name Error Log Number of Slips
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 3073 to 3160
DS1C Circuit Pack DS1C-BD 3329
3. If Error Type 1025 errors persist, see SYNC (Port Network Synchronization).
i. Error Type 1281: the Processor/Tone-Clock circuit has detected a loss of timing signal from
the system’s synchronization reference. The Processor/Tone-Clock circuit has switched
synchronization references.
1. Resolve any errors logged against the SYNC (Port Network Synchronization) or
STRAT-3 (Stratum-3 Clock) MOs.
2. See SYNC (Port Network Synchronization), if the error is not resolved by step 1.
Error Type 1282: the TN2182 tone-clock was synchronized to a DS1 facility and that the
reference frequency provided by the DS1 drifted beyond a range that could be tracked by
the TN2182. Therefore the TN2182 is no longer synchronized to that DS1 reference. If a
second DS1 is available, the tone-clock may be synchronized to that reference. If no
secondary DS1 reference is available, the tone-clock will run off of its internal clock. This
may result in slips being reported by the tone-clock and every DS1 facility.
968 Maintenance Alarms for Communication Manager, Media Gateways and Servers