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Installing and Operating Passport ARN Routers
ISDN BRI S/T 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 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-9
Table C-9.
Pin Assignment
C-12
lists the ISDN interface pin assignments.
ISDN BRI S/T Interface Pin Assignments
Pin No.
1
2
12345678
3
4
5
6
7
8
Signal
Not used
Not used
Tx+ (Transmit to wire)
Rx+ (Receive from wire)
Rx- (Receive from wire)
Tx- (Transmit to wire)
Not used
Not used
114200-E Rev 00
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