Avaya IP500 V2 Operations Instructions download pdf (Page 392)

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Installing IP500/IP500 V2 Page 392

15-601042 Issue 28g (11 October 2013)IP Office 9.0

10.15.4 BRI Port (So)

The BRI ports found on the front of the So8 module are BRI So interface ports for connect to ISDN terminal devices. For

IP Office 4.2+, IP500 BRI trunk daughter cards can be switched from To to So mode. IP400 BRI trunk cards can only be

used as To connections .

IP Office

Wire

ISDN Terminal

RJ45

BRI

RJ45

–

White/Orange

–

Orange/White

Rx-A

White/Green

Tx-B

Blue/White

Tx-A

White/Blue

Rx-B

Green/White

–

White/Brown

–

Brown/White

· Terminating Resistors

100ohm Terminating resistors are required across the transmit and receive wire pairs at each end of the S-bus.

· The IP Office So8 module BRI ports include integral 100ohm terminating resistors.

· For IP Office 4.2+, individual ports of an IP500 BRI daughter card can be switched to So mode. This is done by

setting the Line Sub-Type to S-Bus in the IP Office configuration. In this case terminating resistors must be

added at the IP Office end in addition to those at the other end of the S-bus connection.

· Addition of the necessary termination at the IP Office end can be done using an IP500 BRI So Converter Cable

(700458649). This short (25cm/10") cable includes both the necessary terminating resistors and the cable

cross-over.

· Many ISDN terminal devices includes terminating resistors. If this is not the case, 100ohm (+/-5%) resistors must

be connected across the receive wire pair and the transmit wire pair in the junction box immediately before the

last ISDN terminal on the S-bus.

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