User Guide

DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si
555-230-123
Issue 1
April 1997
Maintenance Object Repair Procedures
Page 10-1415TDM-CLK (TDM Bus Clock)
10
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 agains 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.
6.If the problem is still not cleared, and the Tone-Clock circuit pack
reported in the error log has not been replaced up to now, replace
it. See
How to Replace the Tone-Clock Circuit Pack in the TONE-BD
section.