Listed Directory Numbers - Avaya Communication Manager Administrator's Manual

Related topics
See Feature-Related System Parameters
information.

Listed Directory Numbers

Listed Directory Numbers (LDN) has two capabilities that allow outside callers to access your attendant
group, depending on the type of trunk used for the incoming call. You use one capability to allow
attendant group access via incoming DID trunks. You use another capability to allow attendant group
access via incoming CO and FX trunks.
Brief description
The system routes both incoming DID calls and incoming FX and CO calls to an attendant group,
depending on how you administer the trunks.
How the system routes incoming DID trunk
calls to the attendant group
Incoming DID calls route only to an extension. The LDN feature allows you to assign one or more
extensions to an attendant group. The system uses the LDN extension, or extensions, to route calls to an
attendant group.
How the system routes incoming FX and CO
trunk calls to the attendant group
Incoming FX and CO trunks can terminate at an attendant group, although you administer your system to
terminate the calls elsewhere. You can administer the system to terminate an incoming FX or CO trunk to
one of the following:
•
Attendant group
•
Extension (This could be a VDN, an ACD split, a DDC group, a UCD group, a remote access
extension, or any system extension.)
If you decide to terminate the call at the attendant group, the system treats the call as an LDN call.
Considerations
The number of listed directory numbers that you can assign depends on your system's configuration.
Administrator's Guide for Avaya Communication Manager
November 2003
on page 816, Time Before Off-hook Alert for more
Feature Reference
Listed Directory Numbers
1593