Nortel DMS-100 Series Maintenance Manual page 81

The system generates a minor alarm when at least one datafilled line on the
remote terminal becomes unequipped. One of the following methods can
clear the minor alarm:
insert a line card
remove the datafill in the computing module for the line card that is
missing
If a line card is inserted, the system will RTS the line within 20 seconds. A
BSY/RTS must be performed on the SLC to update the line state in the XPM
under certain conditions. This function is performed if the line state is LMB
and datafill in the CM for the missing line card is removed. The line state in
the XPM is updated automatically under certain conditions. This function is
performed if the line state is IDL and datafill in the CM for the missing line
card is removed.
Bulk data update
Warm SWACT is enabled and both units of the SMS are in-service. The
inactive unit requests a bulk transfer of critical dynamic data from the active
unit. Critical dynamic data maintains established calls and continues call
processing if a SWACT occurs. This transfer is a bulk data update.
If the inactive unit is out-of-service, the inactive unit requests a bulk data
update when the inactive unit returns to service (RTS).
Bulk data includes RCS status, P-side and C-side port statuses (open/closed)
and call processing data. An example of call processing data is connection
of an exact line circuit to an exact DS-1 channel.
A bulk data update transfers the following information from the active SMS
unit to the inactive unit. This transfer occurs when the inactive unit returns
to service.
RCS status (in-service or busy)
frequency selective ringing (FSR) codes
subscriber states (idle or busy)
A bulk data update brings the inactive unit of the SMS up-to-date with the
active unit.
DMS-100 Family SMS Maintenance Manual XPM10 and up
Maintenance overview 1-65