Nortel DMS-100 Series Maintenance Manual page 80

1-64 Maintenance overview
Each XPM unit has tables that contain information. The information is
about nodes that each XPM unit connects to and terminals that each XPM
unit uses. The two systems that determine unit table mismatches are as
follows:
Feature AF5678, Node Table Sync Redesign, introduces the following error
handling changes.
Feature AF6966 provides DMS with the ability to detect the removal or
installation of a line circuit in a remote terminal (SLC-96). The feature
allows the Subscriber Carrier Module-1-S (SMS) or Subscriber Carrier
Module-100S Remote (SMSR) to respond to the reception of the unequipped
signaling pattern from the remote terminal. Feature AF6966 notifies the CM
of the event. The CM changes the line state to line module busy (LMB) or
IDL which allows the CM to react to the line equipped message. The CM
changes the line state based on the state of the line indicated in the message.
This feature addresses detection of lines not equipped in a remote terminal
operating in the MODE 1 configuration.
297-8231-550 Standard 09.01 August 1998
Mate unit matching compares the inactive unit tables with the active
unit. Mate unit matching sets the XPM ISTb in case of mismatch. The
active unit sends table mapping information to the inactive unit during
updates. An inactive unit with ISTb condition can be BSY and RTS.
The NODATASYNC option causes a configuration download to the
inactive unit.
Node table audits determine if the XPM information corresponds to data
in the computing module (CM) table PMNODES. To prevent
differences in datafill for the XPM units, the CM maintains all node
information. To clear an ISTb condition on one unit, BSY and RTS the
XPM. For a complete description of the datafill for table PMNODES,
introduced in feature AF5678, refer to the XPM Translations Reference
Manual.
Table Control applications that change inventory tables reject tuples that
cannot be supported when a peripheral does not have the required
resources available.
The node table audit raises an ISTb condition on an XPM that has a node
table mismatch with the CM. Manually BSY and RTS the XPM to clear
the ISTb condition.
A negative acknowledgment from the XPM causes the loading or RTS
process to abort. The negative acknowledgment occurs during the
download of the configuration data table (CDT) node or port information
during a bulk download.
A negative acknowledgment from the XPM raises an ISTb condition on
the XPM. The negative acknowledgment occurs during the download of
the node CDT or port CDT data during a dynamic configuration update.