DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-1786TONE-BD (Tone-Clock Circuit Pack)
9
cabinet this is carrier E. There is no "preferred" tone clock for
the PPN, regardless of reliability options.
■ status system—Verify the Tone-Clock circuit pack switched to the
other Tone-Clock circuit pack or check the LEDs. The yellow LED of
the new Standby Tone-Clock circuit pack should be off (provided
maintenance is not running on it) and the yellow LED of the active
Tone-Clock circuit pack should be blinking.
■ If the interchange was not successful, the standby Tone-Clock
circuit pack may be defective. In particular, if the error message
"must use override" is displayed, fix the standby Tone-Clock circuit
pack before attempting to replace the active one.
3. If the Tone-Clock circuit pack to be replaced is in the PPN, it is
recommended, but not required, that the SPE carrier containing it be
locked in standby mode by executing an interchange if necessary, and
locking the SPE-Select switches. This protects you from disrupting service
in case of inadvertent errors in replacing the circuit pack. See "Repairing
SPE Components" in Chapter 5, ‘‘Alarms, Errors, and Troubleshooting’’
.
NOTE:
If the SPE-Select switches are locked, be sure to release them at the
conclusion of the replacement procedure.
4. Pull out the defective Tone-Clock circuit pack. No calls should be affected.
If this is a TN2182 circuit pack, some ETR-PTs may be in use and removal
of the pack will affect some individual users. It may be less disruptive to
busyout the standby TN2182 before removing it.
5. Insert a new Tone-Clock circuit pack of the appropriate code in the same
slot where the defective Tone-Clock circuit pack was removed.
6. Test the new Tone-Clock circuit pack via the
test tone-clock UUC long
command to make sure it is functioning properly. If the Tone-Clock circuit
pack is being replaced due to loss of c locks, the Clock Health Inquiry
(#46) will still report a failure, proceed with the next step.
