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Interoperation Configuration Guide

AR Router

This document provides cases for connecting AR enterprise routers to devices of other vendors.
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The Integrated Services Digital Network (ISDN) evolves from the Integrated Digital Network (IDN), provides end-to-end digital connections, and supports a wide range of services, including voice, high-speed fax, video phone, intelligent telegraph, and teletext services.

A BRI interface is an ISDN interface, and supports two data channels and one signaling channel. The data channel (channel B) with the bandwidth of 64 kbit/s can carry voice or data services, and the signaling channel (channel D) with the bandwidth of 16 kbit/s transmits signaling of the ISDN. That is, the bandwidth of a BRI interface is 144 kbit/s (sum of bandwidths of two data channels and one signaling channel).

A BRA trunk is a digital circuit trunk that supports calls over a maximum of two channels. A BRA trunk group implements voice communication between PBX users and inter-office users.

Updated: 2019-05-17

Document ID: EDOC1100034005

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