DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-724DUP-CHL (Duplication Interface)
9
Replacing Duplication Channel Components
The SPE Duplication Channel consists of a Duplication Interface circuit pack
(DUPINT) in the active SPE, a DUPINT in the standby SPE, and an
interconnecting cable. The following sections contain step-by-step procedures
for replacing each of these components. DUPINT replacement must be done on
the standby SPE to prevent loss of service.
If replacement of standby DUPINT circuit pack does not repair the Duplication
Channel, replace the DUPINT circuit pack on the active SPE. If replacement of
both of these circuit packs does not repair the Duplication Channel, replace the
interconnecting cable.
Replacing the STANDBY Duplication Interface
(DUPINT) Circuit Pack
This procedure is used after a
test duplication-interface long
displays a failure
for at least one of the tests that indict the standby DUPINT. The procedure to
interchange the active DUPINT to the standby mode also uses this procedure.
1. Use the
busyout spe-standby
command to lower the standby State of
Health to
partially functional
to prevent an unwanted interchange during
replacement and testing of the standby DUPINT.
2. Manually lock the active SPE. by moving the SPE select switches located
on the front of the DUPINT circuit packs to positions where they are both
selecting the current active SPE.
3. Whenever locking the SPE,
always
verify that the active PPN Tone/Clock is
in the active SPE carrier
before
doing any repair activity on the standby
SPE carrier such as powering down. Enter
status port-network 1
to
check which clock is active. Remove power from the standby SPE carrier
by pulling the power cords located on both sides of the carrier.
Power
must be removed from the standby carrier in order for the replacement
DUPINT to initialize properly.
4. Set the SPE-select switch on the new DUPINT circuit pack to the same
position as the circuit pack you are going to replace. Then remove and
replace the defective circuit pack.
!
CAUTION:
The new standby DUPINT must have its SPE Select switch set to lock
the currently active carrier. The switch should be in the same
position as the removed circuit pack.
5. Apply power to the standby SPE carrier.
