Isdn Bri Interface Overview; Isdn Bri Features Supported By The Ar1200; Configuring An Isdn Bri Interface - Huawei AR1200 series Configuration Manual

Huawei AR1200 Series Enterprise Routers
Configuration Guide - Interface Management

11.1 ISDN BRI Interface Overview

This section describes the principles of ISDN BRI interfaces.
The Integrated Services Digital Network (ISDN) 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.
ISDN physical interfaces are classified into two types: Basic Rate Interface (BRI) and Primary
Rate Interface (PRI).
Both BRI and PRI interfaces contain data channels (B channels) and signaling channels (D
channels). B channels transmit data (IP/IPX packets) of upper-layer applications, and D channels
transmit all ISDN signaling packets.
A BRI interface contains two 64 kbit/s B channels and one 16 kbit/s D channel, and the interface
bandwidth is 2B + D. The two B channels (B1 channel and B2 channel) can be used
independently or be bundled by using the MP technique to provide a maximum transmission
rate of 128 kbit/s.
PRI interfaces are classified into CE1/PRI interfaces and CT1/PRI interfaces.
For the configuration of a CE1/PRI interface, see
For the configuration of a CT1/PRI interface, see

11.2 ISDN BRI Features Supported by the AR1200

This section describes the ISDN BRI interface features supported by the AR1200.
ISDN BRI interfaces have the following characteristics:
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11.3 Configuring an ISDN BRI Interface

This section describes how to configure an ISDN BRI interface.
Applicable Environment
Use this configuration task to set the following parameters:
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Issue 01 (2012-04-20)
NOTE
Comply with the S/T interface standard.
Use PPP and FR as link layer protocols.
Use IP as the network-layer protocol.
MTU of an ISDN BRI interface
Description of an ISDN BRI interface that facilitates identification, maintenance, and
configuration of the interface
Link layer protocol type of the ISDN BRI interface
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11 ISDN BRI Interface Configuration
6 CE1/PRI Interface Configuration.
7 CT1/PRI Interface Configuration.
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