Maintenance-Object Repair Procedures
555-233-143
8-1692
Issue 1 May 2002
TSC-ADM (Administered Temporary
Signaling Connections)
No alarms are generated for Administered Temporary Signaling Connections
(TSC-ADM, also called ADM TSCs).
Administered temporary signaling connections provide a path through ISDN-PRI
networks for supplementary D-channel messages. ISDN-PRI applications such
as the Distributed Communications System (DCS) use temporary signaling
connections to exchange user information across an ISDN-PRI network. What
makes Administered TSCs unique is that these particular TSCs stay active for an
extended period of time, similar to a permanent data connection. These ADM
TSCs are used for DCS features that require Non-Call Associated (NCA) TSCs,
and the ADM TSC provides the logical channel function in a DCS network.
An NCA TSC is a virtual connection established within a D channel without
associating any B-channel connections. The connection provides user-to-user
service by exchanging USER INFORMATION messages without associated
B-channel connections.
An Administered TSC is a special NCA TSC defined for the DCS over the
ISDN-PRI D channel. The ADM TSC has an administratively defined endpoint
and is established for an extended period of time.
There are two types of ADM TSCs:
■
Permanent
These are established by the originating PBX (near-end ADM TSC) or by
the terminating PBX (far-end ADM TSC). Once these ADM TSCs are
established, they remain active.
■
As-Needed
These are established only when needed.
ADM TSC maintenance provides a strategy to verify that a far end can respond to
an ISDN-PRI USER INFORMATION TSC heartbeat message, thereby indicating
that user-user signaling is functioning. In addition, maintenance can retrieve the
status of the ADM TSC’s connection state.
MO’s Name
(in Alarm Log)
Alarm
Level
Initial Command
to Run
Full Name of MO
TSC-ADM
none
none
Administered Temporary Signaling Connections
Summary of Contents for S8700 Series
Page 50: ...Maintenance Architecture 555 233 143 1 26 Issue 1 May 2002 ...
Page 74: ...Initialization and Recovery 555 233 143 3 12 Issue 1 May 2002 ...
Page 186: ...Alarms Errors and Troubleshooting 555 233 143 4 112 Issue 1 May 2002 ...
Page 232: ...Additional Maintenance Procedures 555 233 143 5 46 Issue 1 May 2002 ...
Page 635: ...status psa Issue 1 May 2002 7 379 555 233 143 status psa See status tti on page 7 406 ...
Page 722: ...Maintenance Commands 555 233 143 7 466 Issue 1 May 2002 ...