Nortel DMS 100 Series Maintenance Manual page 77

Figure 2-13 REX state machine actions
Start
Test the inactive unit
(INSV tests only)
PM600 log is output
that identifies the REX
failure reason
A
SysB the inactive unit
after recovery failure
Note 1: Pre-SWACT audit failed .
Note 2: SWACT failed.
Note 3: Post-SWACT audit failed.
DMS-100 Family Remote Switching Center Multi-Access Maintenance Manual XPM11 and up
SysB the inactive unit
SWACT back
to originally
active unit
SWACT
passes
Perform a recovery
warm SWACT
Maintenance overview 2-61
RTS the inactive unit
(out-of-service tests only)
Wait for superframe and
data synchronization to
occur
Initiate a pre-SWACT audit
(Refer to
to determine if a SWACT
note 1)
must be requested
(Refer to
Initiate a warm SWACT
note 2)
(Refer to
Initiate post-SWACT
note 3)
audit of new active unit
SysB the new inactive
unit
RTS and SysB the new
inactive unit
Wait for superframe and
data synchronization to
occur
Perform INSV
diagnostics (TST) on the
newly active unit
Perform INSV
A
diagnostics (TST) on the
new inactive unit
Indicates process failed
Indicates process passed
Finish