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 d efective, however it may be a
software failure that can be correc ted 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 dup licated, 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 servic e momentarily and tones
are removed from the TDM bus for about 10 seco nds, meaning that
no dial tone or touch tones are availab le during this interval. This
will probably not affec t calls in progress, b ut could cause a c all
origination to abort or a user not to g et 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 p rocess. If the test fails,
replace the circuit p ack at the customer’s c onvenience.
5. If this error was logged ag ainst the standby Tone-Clock, and if the
Aux Data value was 18369, SYNC (Synchronization) maintenance
acts on this error. No corrective ac tion is required. For any other
Aux Data, go to the next step.
6. If the board is dup licated, switch to the stan dby side (set tone).
7. Test the alarmed board (test tone UUCSS long). This resets the
board and is required to reload on-board RAM associa ted with the
TN2182’s DSPs.
8. If all tests pass and the alarm d oes not resolve, retest (test tone
UUCSS long clear).
9. If the test passes, terminate the repair p rocess. If the test fails,
replace the circuit p ack at the customer’s c onvenience.
g. Tone-Clock circuit pack on-b oard maintenance has d etected one or more
clock slips
, timing differences b etween its internal reference source and
the synchronization signal p rovided by the master Tone-Clock. Although
no clock slip errors are exp ected during normal operation, both manu al
and automatic interchang es of Tone-Clock circuit packs, sync hronization
references, and PNCs, may result in clock sli p counts.
If error 1281 also is logged for the same Tone-Clock circuit pack, it is
related to this problem, and should be c orrected first. Otherwise, c ontinue
with the procedure bel ow.
1. Use test tone-clock PC, and examine the results of test #149 to
see if slip errors are still occurrin g. 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 c lear
the errors.