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
