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DEFINITY ECS Release 8.2
Administrator’s Guide
555-233-506
Issue 1
April 2000
Features and technical reference
1406ISDN service
20
Malicious Call Trace (MCT)
ISDN calling number identification is sent when MCT notification is activated on
an ISDN trunk.
Multiple Subscriber Number (MSN) - Limited
The ISDN standard MSN feature lets you assign multiple extensions to a single
BRI endpoint. A side effect of supporting the NT interface is the MSN feature
works with BRI endpoints allowing the Channel ID IE to be encoded as
“preferred.” The endpoint must be administered as the far end of an NT-side
ISDN-BRI trunk group. Also, you must use the Uniform Dial Plan (UDP) feature
to assign the desired extensions to the “node” at the far end of the trunk group.
Overlap Sending
You can administer overlap sending on AAR and ARS calls routed over ISDN
trunk groups. This allows you to send and receive digits one digit at a time instead
of enbloc. (With enbloc, digits are not sent until the entire group of digits is
received).
Interactions
■ Australia Malicious Call Trace
A DEFINITY ECS with a BRI connection to the Australian public network
is able to notify the network if a user in a private network invokes the
Malicious Call Trace feature. This works on Australian national
connections.
■ Direct Inward Dialing
Some public network operators may not offer full Direct Inward Dialing
service on BRI trunks, but instead may offer the BRI equivalent, which
typically is called Multiple Subscriber Number (MSN). This is the case if
the public network treats the BRI as an endpoint interface rather than a
trunk group interface.
In such a case, the network only routes up to 10 public numbers to a
particular pair of BRI trunks. Furthermore, the network may not let calls
overflow from one BRI trunk to another.
■ D-Channel Backup
D-Channel Backup is not supported on BRI connections.
■ Distributed Communications System
If both DCS and ISDN features are provided over the same facility with a
DEFINITY ECS, DCS displays generally override ISDN displays.
However, with DEFINITY ECS, the ISDN connected name and number