Avaya Definity SI, Руководство по обслуживанию, Страница: 2512 / 2968

Maintenance Object Repair Procedures
555-233-123 10-1726 Issue 4 May 2002
i. The tone-clock circuit pack in the master port network was unable to detect
the incoming synchronization signal, but the other tone-clock was able to
detect the references. If the aux data is 0, the problem is with the signal on
the primary. If the aux data is 1, the problem is with the signal on the
secondary. The system should switch clocks in this situation.
1. If this error is against a PPN clock board and the system is using a
Stratum 3 clock, check the cabling that brings the stratum 3 signal to
this clock board.
2. Replace the current standby Tone-Clock circuit pack. See How to
Replace the Tone-Clock Circuit Pack in the TONE-BD section.
j. The indicated active Tone-Clock circuit pack, which is on a port network
that does not contain the system synchronization reference (a slave
Tone-Clock), has detected a loss of timing signal from its EXP-INTF
synchronization source.
1. Enter display errors and display alarms, and follow the associated
repair procedures for EXP-INTF, TDM-CLK, and TONE-BD error log
entries that have on-board alarms.
2. If the 2305 errors persist, follow the repair procedures for EXP-INTF
error log entries 257, 769, or 770, or any errors logged against
SNI-BD, SNC-BD, or FIBER-LK.
3. If the 2305 errors persist:
a. For Port Networks with more than one Tone-Clock circuit
pack, execute the command test synchronization r 10, and
check to see if new 2305 errors against TDM-CLK were
reported. If not, execute reset PNC interchange and then test
synchronization r 10 again, and recheck for new 2305 errors
against TDM-CLK
b. For Port Networks with a single Tone-Clock circuit pack,
execute the command test synchronization r 10, and check to
see if new 2305 errors were reported.
If no new instances of the 2305 errors were logged for either test,
then enter test tone-clock UUC long clear to clear the TDM-CLK
errors and the procedure is complete.
4. For Port Networks with more than one Tone-Clock circuit pack,
interchange Tone-Clocks with the set tone-clock UUC, then run
test synchronization r 10, and check to see if new 2305 errors are
reported against the new active Tone-Clock circuit pack. If not,
replace the standby Tone-Clock circuit pack. See How to Replace
the Tone-Clock Circuit Pack in the TONE-BD section. If this clears
the error, the problem has been resolved.
5. Replace the EI circuit pack for the active PNC. In the direct-connect
case, use the list fibers command to identify which active EI
connects with the PPN.