User's Manual

DEFINITY ECS Release 8.2 Maintenance for R8.2csi 555-233-119 Issue 1
April 2000
Maintenance Objects
3-1082TDM-CLK (TDM Bus Clock)
3
f. The Tone-Clock circuit pack may be defective, however it may be a
software failure that can be corrected by testing.
1. Check to see if the board is duplicated (
list cabinet
and
status
port-network
) on the affected port network.
2. If the board is not duplicated, use test tone UUCSS long to resolve
the errors. The long test resets the board and is required to reload
on-board RAM associated with the TN2182’s DSPs. The effect is
that tone detectors are taken out of service momentarily and tones
are removed from the TDM bus for about 10 seconds, meaning that
no dial tone or touch tones are available during this interval. This
will probably not affect calls in progress, but could cause a call
origination to abort or a user not to get dial tone when going off
hook.
3. If all tests pass and the alarm does not resolve, retest with
test tone
UUCSS long clear
.
4. If the test passes, terminate the repair process. If the test fails,
replace the circuit pack at the customer’s convenience.
5. If this error was logged against the standby Tone-Clock, and if the
Aux Data value was 18369, SYNC (Synchronization) maintenance
acts on this error. No corrective action is required. For any other
Aux Data, go to the next step.
6. If the board is duplicated, switch to the standby side (
set tone
).
7. Test the alarmed board (test tone UUCSS long). This resets the
board and is required to reload on-board RAM associated with the
TN2182’s DSPs.
8. If all tests pass and the alarm does not resolve, retest (
test tone
UUCSS long clear
).
9. If the test passes, terminate the repair process. If the test fails,
replace the circuit pack at the customer’s convenience.
g. Tone-Clock circuit pack 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 packs, synchronization
references, and PNCs, may result in clock slip counts.
If error 1281 also is logged for the same Tone-Clock circuit pack, it is
related to this problem, and should be corrected first. Otherwise, continue
with the procedure below.
1. Use
test tone-clock PC
, and examine the results of test #149 to
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 PC long clear
to clear
the errors.