DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Alarms, Errors, and Troubleshooting
5-8Replacing SPE Circuit Packs
5
Replacing Circuit Packs on a Duplicated SPE:
Lock-and-Power-Down
By following the lock-and-power-down procedure, components of a duplicated
SPE can usually be replaced with no disruption of service.
!
WARNING:
In a system with duplicated SPEs, a spontaneous SPE interchange may
occur if the active SPE is not in good health and either an unlocked SPE
completes its reboot and handshake is reestablished, or a locked SPE in
which the Standby Maintenance Monitor (SMM) is running is unlocked.
!
WARNING:
Use the
status spe
command to determine the health of the active SPE and
whether an interchange will occur.
1. Enter
status spe
to verify that the component to be replaced is on the
standby SPE. If it is, go to step 2.
If the component is on the active SPE, initiate a planned SPE interchange
by entering
reset system interchange
. If the interchange fails, there may
be faults on the standby SPE preventing the interchange. You must either
repair the fault on the standby SPE first, or force an interchange by using
reset system interchange health-override
.
!
WARNING:
Forcing an interchange may disrupt service. Arrange to do so at a
time suitable for the customer.
2. Enter
status port-network 1
to check the health of the PPN Tone/Clocks.
The Tone/Clock in the same carrier as the active SPE should have a
service state of “in.” If not, repair it using “TDM-CLK” before proceeding.
3. Lock the active SPE.
After grounding yourself, move the SPE-SELECT switches on both
DUPINT boards, 1 at a time, to the carrier designation of the active SPE.
For example, if the A carrier SPE is currently active, move the switches to
position “A.”
4. Enter status port-network 1 to verify that the active Tone/Clock is in the
same carrier as the active SPE.
If not, repeat the command until this condition is met. If the active
Tone/Clock has not migrated to the active carrier after 1 minute, there is a
Tone/Clock problem. The Tone/Clock problem must be fixed first to avoid
service disruption. See “TDM-CLK” maintenance object.
