Avaya S8700 Maintenance Manual page 2330

Maintenance-Object Repair Procedures
8. If every test passes and the alarm does not resolve, retest (test
9. If the test passes, terminate the repair process. If the test fails,
g. 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, may result in clock slip counts.
If error 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 UUC, and examine the results of Test #149 to
2. Otherwise, enter the display errors command, and follow corrective
Table 8-624. Error Log Entries for Slip Errors
Circuit Pack Name
DS1 Interface
Expansion Interface
Switch Node Interface
Tone-Clock
UDS1 Interface
DS1C Circuit Pack
3. If 1025 errors persist, see
8-1608 Issue 1 May 2002
tone UUCSS long clear).
replace the circuit pack at the customer's convenience.
see if slip errors are still occurring. 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 UUC long clear to clear the
errors.
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 8-624.
Error Log
Name
DS1-BD
EXP-INTF
SNI-BD
TDM-CLK
UDS1-BD
DS1C-BD
and follow the procedures in
Error Log Entry
for Slips
3073 to 3160
2305
1537
1025
3073 to 3160
3329
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