Nortel DMS 100 Series Maintenance Manual page 55

Dynamic data update
A dynamic data update occurs continuously. Data that changes in the active
unit is updated in the inactive unit. The following information is in dynamic
data updates:
• AMC state (InSv or BSY)
• FSR codes
• subscriber states
• channel reassignment
• port states
• PCM30 link information
When the bulk transfer of critical data is complete, communication continues
between the units. Information can continue to flow from the active unit to the
inactive unit. This condition is an ongoing data update. As this data changes,
the inactive unit is updated. The inactive unit maintains the capability to take
over call processing from the mate if a SWACT occurs.
The following table lists critical dynamic data transferred to the inactive unit.
The active unit sends this data to the mate of the active unit. The active units
sends this data first in bulk. The active unit continues to send this data as data
in the active unit change.
Table 2-16 Critical dynamic data
Dynamic data
Call data
Terminal status
Port status
PCM30 maintenance
For dynamic data, the inactive unit can take over call processing from the mate
of the inactive unit. The inactive unit can take over call processing while the
inactive unit retains many of the established calls.
The node and terminal table information is loaded to the RSC-M as static data.
DMS-100 Family Remote Switching Center Multi-Access Maintenance Manual XPM11 and up
Maintenance overview 2-39
Condition for change
The system establishes or disconnects
Terminal (line or trunk) is put into or
taken OOS
A P- or C-side port change in state
(open or close) is requested.
Maintenance or data synchronization
reporting over PCM30 links is enabled
or disabled.