ZyXEL Communications ISG50 User Manual

 Chapter 30 Outbound Trunk Group

ISG50 User’s Guide

Available 
Interface

For DDI/DID, AA, and Direct, this list displays the available slots and ports on the 
ISG50. Click one slot and port and then click the Right icon if you want to add it to this 
outbound group.   

Used Interface

For DDI/DID, AA, and Direct, this list displays the ports currently configured for this 
outbound line group. Click one port and click the Left icon if you want to remove it from 
the outbound group.

If you configure more than one interfaces in this outbound line group, the ISG50 check 
and pick one of them available for an outgoing call.

Number

This field displays for MSN. There the MSN number the interface is to use.

Used Interface

This field displays for MSN. Select the BRI port and the MSN number the interface is to 
use.

DDI/DID Mapping 
Setting

Use this section to configure your DDI mapping table.

DDI/DID Mask

Enter a number (0~20) to identify the extension mapping digits from right to left, so a 
DDI mask of 2 applied to the incoming ISDN number 555-123456 would identify the 
numbers 56. 

Add

Click this to add a new entry to the local net list.

Remove

Click this to delete the selected item(s) in this list.

#

This field is a sequential value, and it is not associated with a specific entry.

DDI/DID Number

This is the DDI number.

Extension 
Number

This is the DDI number’s associated extension number.

Outgoing Calling 
Party Number

Prefix

Enter a number to add in the beginning of the outgoing caller’s numbers using this trunk 
line. This field can be 0-20 digits in length.

Calling Party 
Number

Use this section to set your outgoing calling party numbers. These are what the callee 
sees when the ISG50 sends a call out through this BRI trunk.

DDI/DID or Directory Number (If not match DDI) - Select this to have calls going 
out through this BRI trunk use the DDI/DID if the outgoing call matches it or the number 
defined in the Directory Number field if the outgoing call does not match the DDI/DID.

Directory Number - Select this to have calls going out through this BRI trunk use the 
number defined in the Directory Number field.

DDI/DID or User Define Number (If not match DDI) - Select this to have calls going 
out through this BRI trunk use the DDI/DID if the outgoing call matches it or another 
number that you specify if the outgoing call does not match the DDI/DID. Enter the 
number in the field. This field can be 3-20 digits in length.

User Define - Select this to have calls going out through this BRI trunk use a number 
that you specify. Enter the number in the field. This field can be 3-20 digits in length.

Extension - Select this to have calls going out through this BRI trunk use the caller’s 
extension number.

Hide Calling Party 
Number 

Select this to not have your calling party number display on the callee’s caller ID. This 
option only applies to calls going out through this BRI trunk that do not match the DDI/
DID.

OK

Click OK to save your customized settings and exit this screen.

Cancel

Click Cancel to exit this screen without saving.

BRI Trunk Add/Edit (continued)