DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4
June 1999
Maintenance Object Repair Procedures
9-1787TONE-BD (Tone-Clock Circuit Pack)
9
7. To verify that the new Tone-Clock circuit pa ck can generate c locks for the
system, switch to the new Tone-Clock with set tone-clock UUC override,
and execute test tone-clock UUC. (In a PPN, th e SPE-Sel ect s witc hes
must be in the auto position.)
!CAUTION:
If the new Tone-Clock circuit pack is not ab le to generate system
clocks, this proc edure becomes de structive. The system will detect a
loss of clock and recover accordingly.
In this case if the Tone-Clock circuit pac k being replac ed is in the
PPN the system will perform a reset system 2 (cold 2 rest art)
automatically. If the Tone-Clock circuit pack b eing replaced is in an
EPN, the system will reset the EPN (EPN cold restart). After either
type of restart, the faulty Tone-Clock circuit pac k will be in standb y
mode.
If the new Tone-Clock circuit pack is able to generate system clocks,
there will be no system disruption.
8. Place several phone calls.
9. After replacing a Tone-Clock circuit p ack in an SPE, if the SPE lock
switches were set during the p rocedure, they should b e released.
Additionally, after repairs in an EPN, the set tone-clock UUC command
should be used if req uired to make the preferred Tone-Clock circui t pack
active.