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Installing and Operating BayStack ARN/DC Routers
C-8
116273-B Rev 00
ISDN BRI S/T Interface
The ARN/DC supports the BRI standard for ISDN using an optional ISDN/BRI
adapter module. The integrated ISDN BRI functionality allows you to connect to
the ISDN network over a terminal adapter through an S/T interface.
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-6
lists the ISDN interface pin assignments.
Table C-6. ISDN BRI S/T Interface Pin Assignments
Pin Assignment Pin No. Signal
1 Not used
2 Not used
3 Tx+ (Transmit to wire)
4 Rx+ (Receive from wire)
5 Rx- (Receive from wire)
6 Tx- (Transmit to wire)
7 Not used
8 Not used
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