Nortel DMS-100 Series Maintenance Manual page 57

SWACT-back
If an SMS does not receive a gain-acknowledged message from the CC, the
original active SMS unit initiates a SWACT-back. During a SWACT-back,
the original active SMS unit attempts to regain activity. If successful, the
inactive unit is set SysB and returns to service. The active unit remains in
service. The system maintains stable calls from the original active unit over
the SWACT-back. The system drops all new calls made after the SWACT.
The system drops all new calls made before the SWACT-back. If a
SWACT-back is not successful, both SMS units before are SysB and return
to service.
Note 1: After a SWACT-back, the system does not initialize operational
measurements (OM) and peg counts again.
Note 2: The system does not support this feature during SMS or CC
overload.
The SWACT-back is available for the following manual SWACT commands:
SWACT
SWACT TST
SWACT NOW
SWACT ALL
SWACT FORCE
TST REx NOW
BSY UNIT unit_no
where
unit_no is the number of the active unit
BSY ACTIVE
Note: A SWACT-back is available for a REx test that the REx scheduler
initiated. Refer to Routine exercise test for more information actions
between this feature on how this feature and REx tests.
DMS-100 Family SMS Maintenance Manual XPM10 and up
Maintenance overview 1-41