ZyXEL Communications ISG50 User Manual

Chapter 30 Outbound Trunk Group

ISG50 User’s Guide

Each field is described in the following table.

Outbound Line Management > Outbound Trunk Group

SIP Trunk / Trust 
Peer / FXO / BRI 
Settings

These headings divide the screen into sections based on the type of outside line you have 
configured:

•

SIP Trunk - refers to a connection from the ISG50 to a SIP server at your VoIP 

service provider.

•

Trust Peer - refers to a connection to another SIP server (for example another 

ISG50) that has configured your ISG50 as a trusted peer.

•

FXO - refers to a connection from the ISG50 to the PSTN (your local telephone 

company) via the FXO port on the ISG50.

•

BRI - refers to a connection from the ISG50 to the basic rate ISDN trunk line via the 

BRI port on the ISG50.

Add

Click this to create a new entry. Select an entry and click Add to create a new entry after 
the selected entry.

Edit

Double-click an entry or select it and click Edit to modify it. 

Auto Attendant

Select an entry and click Auto Attendant to assign an auto attendant to the outbound 
line group.

Remove

To remove an entry, select it and click Remove. The ISG50 confirms you want to remove 
it before doing so.

Trunk Name

This field displays the name of an outbound line trunk.

Description

This field displays the description for an outbound line trunk.