Australia Malicious Call Trace (MCT)

Communication Manager with a BRI connection to the Australian public network can notify the network if a user in a private network invokes the MCT feature. This service works on Australian national connections.

Direct Inward Dialing (DID)

Some public network operators may not offer full DID service on BRI trunks, but instead may offer the BRI equivalent, which typically is called 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. 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 server, DCS displays generally override ISDN displays. However, with Communication Manager, the ISDN connected name and number can override the DCS called name and number if the Display Connected Name/Number for ISDN DCS Calls field is y on the Feature-Related System Parameters screen.

BRI trunks support DCS if using a BX.25 link to transport the DCS messages. DCS+, also known as DCS Over ISDN D-Channel, according to the AT&T protocol, is not supported on BRI trunks.

Facility Test Calls

Neither BRI or PRI trunks support Facility Test Calls.

France VN4 Protocol

The France national VN4 protocol is supported on BRI trunks as ETSI.

Generalized Route Selection

BRI trunks are capable of carrying 56Kbps or 64Kbps data calls. The link coding that restricts certain PRI trunks to 56Kbps only does not apply to BRI trunks.

German 1TR6 Protocol

The German national 1TR6 protocol is not supported over BRI trunks.

Message Sequence Tracer

ISDN-BRI trunks support Message Sequence Tracer. However, certain filtering capabilities available for PRI trunks are not available. You cannot filter BRI trunk messages based on incoming/outgoing calling/called number.

Network Access - Public (LEC/AT&T/Other Carriers)

Public network access using BRI trunks is available but only in those countries that support point-to-point BRI connections. In the U.S., BRI access is offered only by the Local Exchange Carriers and not by Interexchange Carriers.

Network Access - Private Premises Based

Full support for private-network connections using BRI trunks is available.

Non-Facility Associated Signaling

Non-Facility Associated Signaling is not supported on BRI connections.

Temporary Signaling Connections

Communication Manager does not support Temporary Signaling Connections according to the AT&T protocol on BRI trunk interfaces. Only the QSIG NCA TSC protocol is supported on these interfaces

Wideband Switching (NxDS0)

Communication Manager does not support wideband switching on BRI connections.