Connecting an ISDN BRI trunk

Last Updated : May 26, 2020 |

About this task

In the U.S., you need to connect a separately purchased NT1 device to each ISDN port that you use to connect an ISDN BRI trunk.

Procedure

Connect the trunk to any ISDN port on an MM720, MM721, or MM722 media module.

The following images show the ISDN port location on MM720, MM721, and MM722 media modules.

Figure : 1. MM720 media module ISDN ports




Figure : 2. MM721 media module ISDN ports




Figure : 3. MM722 media module ISDN ports