Nortel Networks Passport ARN Routers - Manual (Page 135)

ARN Technical Specifications
114200-E Rev 00 C-11
ISDN BRI U Interface
The ARN supports the BRI standard for ISDN using an optional ISDN/BRI
adapter module. The integrated ISDN BRI functionality allows you to connect
directly to the ISDN network, through a U interface, as opposed to connecting
over a terminal adapter. This solution reduces equipment costs and simplifies
connection to an ISDN switch.
The BRI implementation supports two dial service applications: dial-on-demand
and dial backup. Configuring Dial Services describes these services and how to
configure them for connection to an ISDN network.
Table C-8 lists the ISDN interface pin assignments.
Table C-8. ISDN BRI U Interface Pin Assignments
Pin Assignment Pin No. Signal
1 Not used
2 Not used
3 Not used
4 TIP
5 RING
6 No used
7 Not used
8 Not used
1 2 3 4 5 6 7 8