Avaya IP500, Installation Manual

Page: 391 / 442

Installing IP500/IP500 V2 Page 391
15-601042 Issue 28c (19 August 2013) IP Office 9.0
System Components: Physical Ports
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 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.
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