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 chec k the LEDs. The yellow LED of
the new Standby Tone-Clock circuit pac k should be off (provided
maintenance is not running on it) and the yellow LED of the active
Tone-Clock circuit pack should b e blinking.
■If the interchange was not succ essful, the standby Tone-Clock
circuit pack may b e defective. In parti cular, if the error message
"must use override" is displayed, fix the stand by Tone-Clock circuit
pack before attemp ting to replace the activ e one.
3. If the Tone-Clock circuit pack to be replaced is in the PPN, it is
reco mmend ed, b ut no t requ ired , that t he SPE ca rrier cont aining it b e
locked in standb y mode by executing an interchange if necessary, and
lock ing t he SPE-Sele ct sw itch es. Thi s prot ects you fro m dis rupt ing s ervic e
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 replac ement procedure.
4. Pull out the defective Tone-Clock circuit pac k. No calls should be affec ted.
If this is a TN2182 circuit pack, some ETR-PTs may be in use and removal
of the pack will affect some ind ividual users. It may be less d isruptive to
busyout the standby TN2182 b efore removing it.
5. Insert a new Tone-Clock circuit pack of the ap propriate cod e in the same
slot where the defective Tone-Clock circuit p ack was removed.
6. Test the new Tone-Clock circuit p ack via the test tone-clock UUC long
command to make sure it is functi oning properly. If the Tone-Clock circuit
pack is being replaced due to loss of c locks, the Clock Health Inq uiry
(#46) will still report a failure, proc eed with the next step.