4000 Router Series Layer 2 - WAN Configuration Guide

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ISDN protocol BRI CT1/PRI CE1/PRI

5ESS Yes

DSS1 Yes Yes Yes

ETSI Yes Yes Yes

NI Yes

NI2 Yes

QSIG Yes Yes

NTT Yes Yes

ANSI, AT&T, ETSI, NI, and NTT do not support network side operation.

You can configure this function only if no call exists on the ISDN interface.

To set the ISDN protocol for an ISDN interface:

Ste

Command

Remarks

1. Enter system view.

system-view N/A

2. Enter ISDN BRI or PRI

interface view.

interface interface-type interface-number N/A

3. Set the ISDN protocol

type.

isdn protocol-type protocol

By default, the ISDN protocol

on a BRI or PRI is DSS1.

Setting the protocol mode for an ISDN interface

Protocol mode for an ISDN interface includes user side mode and network side mode. For two ISDN

devices that communicate with each other, set the two interfaces on each device for the communication

to operate in user side mode and network side mode, respectively.

When a BRI on a BSV card directly connects to an ISDN phone, set the BRI to the network side mode. For

other scenarios, set an ISDN interface to the user side mode.

When you configure this task, follow these guidelines:

• A BRI for data services does not support the network side mode.

• The ANSI, AT&T, ETSI, NI, and NTT protocols supports only the user side mode.

• You can perform this task only if no call exists on the ISDN interface.

To set the protocol mode for an ISDN interface:

Ste

Command

Remarks

1. Enter system view.

system-view N/A

2. Enter ISDN BRI or PRI

interface view.

interface interface-type interface-number N/A

3. Set the protocol mode for

an ISDN interface.

isdn protocol-mode { network | user }

The default is the user side

mode.