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DEFINITY ECS Release 8.2
Administrator’s Guide
555-233-506
Issue 1
April 2000
Features and technical reference
1407ISDN service
20
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. Specifically,
it is not possible to 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 such as AT&T.
■ 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
DEFINITY ECS 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