DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4
June 1999
Maintenance Object Repair Procedures
9-1495STBY-SPE (Standby SPE Maintenance)
9
■The standby SPE is inaccessible to the active SPE and active G3-MT
login.
■No SPE-in terc hang e is p ossi ble.
■Handshake is down and mem ory shadowing is off.
!WARNING:
Transition the system into the lock mode with extreme care. Always move the switches into the position d esignating the active SPE c arrie r. Swi tchi ng to a faulted standby can cause a total service outage.
The locked state is intended for temporary use to prevent interc hanges during
maintenance sessions. Alarms are raised if the sw itches are left out of the AUTO
posi tion f or an exten ded leng th of time ( SPE-SEL).
To lock t he SPEs, f irst d ete rmine whic h is a ctiv e:
■The active Duplication Interfac e’s yellow LED will be lit.
■status spe reports active/standb y status of each SPE.
Making sure you are grounded , move the switches one at a time
to the letter
designating the ac tive carrier. Wait a few seconds, then verify that the l ock took
effect:
■The red LED labeled OVERRIDE on both Duplication Interface ci rcuit
packs should be lit.
■status spe displays spe-a locked in the SPE SELECTED field if the A
SPE is locked active. This verifies that internal software is aware of the lock
state. The screen will also indicate that hand shake is down, memory
shad owing is o ff and the s tand by is not re fresh ed. The sta ndb y SPE is
technically not in service while locked, and its SOH can vary.
To unloc k the a cti ve SPE, mo ve b oth SPE-SEL ECT swit che s bac k to A UTO.
System softw are wi ll aut omat ical ly try to b ring the s tand by SPE in to ful l ser vice ,
by establishing hand shake, refreshing memory, and raising the standb y’s SOH if
appropriate.
!CAUTION:
When exiting the locked state, a spontaneous SPE interchange is possible if active SPE SOH is not functional. Always check first with status spe (unless the interchange is desired ).
After exiting the locked state, make sure the standby returns fully t o service (SOH
functional). When the system is in the locked state, all al arms against the standby
SPE (ST B Y-SPE), (except the WARNING alarm raised in the busyout state), are
automatically cleared b y the system.