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Cables and Connectors
ISDN BRI interface specifications
MultiVoice Gateway for the MAX— User’s Guide
Preliminary November 23, 1998
D-19
E1/PRI WAN ports
Table D-18 lists the pins on RJ48C sockets on the MultiVoice Gateway used for E1/PRI WAN
interface. Only pins 1, 2, 4, and 5 are used. The remaining pins are not connected.
Note:
E1/PRI models are also equipped with BNC connectors.
ISDN BRI interface specifications
This section provides the specifications for the MultiVoice Gateway unit’s ISDN BRI
interface.
Warning:
To reduce the risk of fire, communication cable conductors must be 26 AWG or
larger.
Attention:
Afin de reduire les risques d'incendie, les fils conducteurs du cable de communica-
tion doivent etre d'un calibre minimum de 26 AWG (American Wire Gauge), c’est-a-dire d'un
minimum de 0,404 mm.
Warnung:
Um Feuerrisiken zu reduzieren, müssen die Kommunikationskabel-Anschlüße 26
AWG oder größer sein.
For the Net/BRI module
The Net/BRI module (MX-SL-8BRIN) connects to the WAN through a network termination
(NT1) device. You must install a cable from the NT1 that ends in a 100
Ω
termination. The
maximum distance between the NT1 and its termination is 3280 feet (1000 m). You can install
the Net/BRI module anywhere along the length of the cable. Use only cable specifically
constructed for ISDN BRI interfaces.
Note:
In Belgium, install 10 m of cable between the Net/BRI module and the NT1.
Significant data errors can result from use of shorter cables.
Table D-18.Transmit and Receive pins
MultiVoice Gateway E1/PRI
interface
RJ48C DTE
Receive (input) pair, Tip (T1)
Receive (input) pair, Ring (R1)
Position 2
Position 1
Transmit (output) pair, Tip (T)
Transmit (output) pair, Ring (R)
Position 5
Position 4