Deploying Avaya IP Office™ Platform IP500 V2
Page 350
15-601042 Issue 30j (18 May 2015)
IP Office™ Platform 9.1
Comments on this document? [email protected]
13.13.4 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.
IP Office
Wire
ISDN Terminal
RJ45
Pin
BRI
PIN
RJ45
1
–
White/Orange
1
2
–
Orange/White
2
3
Rx-A
White/Green
3
4
Tx-B
Blue/White
4
5
Tx-A
White/Blue
5
6
Rx-B
Green/White
6
7
–
White/Brown
7
8
–
Brown/White
8
·
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.