BRI Port (So)

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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
BRI	RJ45	BRI	Wire	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.

© 2009 AVAYA
15-601042 Issue 20.i.-
10:13, 18 November 2009
(bri_port_s0.htm)

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Last Modified: 10/03/2008