Nortel-networks Circuit Card Instrukcja Użytkownika Strona 379

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Przeglądanie stron 378
Page 379 of 906
Circuit Card Description and Installation
384
NT6D70 SILC Line card
Contents
This section contains information on the following topics:
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 379
Physical description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 380
Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 380
Introduction
The S/T Interface Line card (SILC) (NT6D70AA –48V North America,
NT6D70 BA –40 V International) provides eight S/T four-wire full-duplex
interfaces to connect ISDN BRI-compatible terminals over Digital Subscriber
Loops (DSLs) to the System. A description of the ISDN BRI feature is
contained in ISDN Basic Rate Interface: Installation and Configuration
(553-3001-218).
You can install this card in any IPE slot.
Note: A maximum of four NT6D70 SILC cards are supported in an
MG 1000S. A maximum of four NT6D70 SILC cards are supported in
an MG 1000S 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).
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