Technical data

ARN/DC Technical Specifications
116273-B Rev 00
C-7
ISDN BRI U 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
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-5
lists the ISDN interface pin assignments.
Table C-5. ISDN BRI U Interface Pin Assignments
Pin Assignment Pin No. Signal
1 Not used
2 Not used
3 Not used
4 TIP
5RING
6 Not used
7 Not used
8 Not used
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