Nortel Circuit Card 311 Reference page 374

374 NT6D70 SILC Line card
An NT6D70 SILC card can reside in a Media Gateway or Media Gateway
Expansion. A maximum of four NT6D70 SILC cards are supported in a
Media Gateway and Media Gateway Expansion.
ISDN BRI
ISDN BRI consists of two 64Kb/s Bearer (B) channels and one 16Kb/s Data
(D) channel. The BRI interface is referred to as a 2B+D connection as well
as a Digital Subscriber Loop (DSL).
B-channels transmit user voice and data information at high speeds, while
D-channels are packet-switched links that carry call set-up, signaling and
other user data across the network.
One single DSL can carry two simultaneous voice or data conversations to
the same or to different locations. In either case, the D-channel can also
be used for packet communication to a third location simultaneously. The
two B-channels can also be combined to transmit data at uncompressed
speeds of up to 128 Kbps.
A wide range of devices and telephone numbers can be associated with
a single DSL to offer equipment flexibility and reduce line, wiring, and
installation costs.
Communication Server (CS) 1000 Release 1.1 and later supports ISDN
Basic Rate Interface (BRI).
ISDN BRI consists of two 64Kb/s Bearer (B) channels and one 16Kb/s Data
(D) channel. The BRI interface is referred to as a 2B+D connection as well
as a Digital Subscriber Loop (DSL).
B-channels transmit user voice and data information at high speeds, while
D-channels are packet-switched links that carry call set-up, signaling and
other user data across the network.
One single DSL can carry two simultaneous voice or data conversations to
the same or to different locations. In either case, the D-channel can also
be used for packet communications to a third location simultaneously. The
two B-channels can also be combined to transmit data at uncompressed
speeds of up to 128 Kb/s.
A wide range of devices and telephone numbers can be associated with
a single DSL to offer equipment flexibility and reduce line, wiring, and
installation costs.
Copyright © 2003-2008, Nortel Networks
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Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008