ZyXEL Communications ISG50 User Manual

 Chapter 28 Voice Interfaces

ISG50 User’s Guide

Use this screen to configure ISDN BRI interface settings on the ISG50. Click Configuration > PBX 
> Voice Interfaces > BRI to view the screen as shown next.

Configuration > PBX > Voice Interfaces > BRI

Each field is described in the following table.

Configuration > PBX > Voice Interfaces > BRI

BRI Configuration 
port

Specify the BRI port to configure.

TEI

This Terminal Endpoint Identifier is used to uniquely identify each TE device. Select 
Dynamic to automatically request an ID when the ISG50 is connected to the network. 
Or select Fixed and enter a number (0-63) provided from your telephone company.

Note: You must configure the same TEI on the ISG50 and its connected BRI device.

ISUP

Specify the signalling method the ISG50 accepts to receive a callee’s number through a 
specified BRI port.

en-bloc: The ISG50 expects to receive a complete callee’s number at one time.

overlap-receiving: The ISG50 expects to receive digits of a callee’s number one-by-
one.

Tx Volume Level

Select the volume level transmitted from the ISG50. -6 is the lowest, and 6 is the 
loudest. 

Rx Volume Level

Select the volume level transmitted to the ISG50. -6 is the lowest, and 6 is the loudest. 

Outgoing Calling 
Party Number 
Settings

Use this section to configure your outgoing calling party numbers.