DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-795EXP-INTF (Expansion Interface Circuit Pack)
9
located in the B carrier was really the source of the problem and not
the Expansion Interface circuit pack, then the link(s) will go down
again the next time a Tone-Clock switch to the Tone-Clock in the B
carrier is attempted (probably when the scheduled Tone-Clock
switch occurs).
!
CAUTION:
If, after all the links are restored, you suspect the problem
might have been due to a defective Tone-Clock circuit pack,
switch to this Tone-Clock at an appropriate time. If the
Tone-Clock circuit pack was the cause of the problem and the
same Expansion Interface circuit packs are in place, the same
link(s) will go down again.
a. On a system in which the network containing the suspect
Tone-Clock circuit pack has duplicated Tone-Clock circuit packs
and the network is in-service:
Switch to the Standby Tone-Clock on this network. If the suspect
Tone-Clock circuit pack is defective, link(s) should be restored at
this point. Switching back to the defective Tone-Clock should make
the same link(s) go out-of-service. Such a Tone-Clock is defective
and should be replaced as soon as possible. If switching
Tone-Clocks does not bring up the EPN, then this Tone-Clock is not
the source of the problem. Make sure to switch back to the original
Tone-Clock.
!
CAUTION:
If the defective Tone-Clock circuit pack is left as the Standby
Tone-Clock, then a scheduled Tone-Clock switch will cause
the same link(s) go out-of-service again.
b. On a system in which the EPN containing the suspect Tone-Clock
circuit pack is out-of-service:
Replace the Active Tone-Clock circuit pack on this network. In a
network with duplicated Tone-Clock circuit packs, the Active
Tone-Clock will be the Tone-Clock circuit pack whose yellow LED is
flashing: if both are flashing, it is the one that is blinking slower. If
the link(s) comes up after replacing this Tone-Clock circuit pack,
then this Tone-Clock circuit pack should be replaced as soon as
possible.
!
CAUTION:
If the defective Tone-Clock circuit pack is left as the Standby
Tone-Clock, then a scheduled Tone-Clock switch will cause
the same EPN to go out-of-service again.
