Lucent Technologies Definity Enterprise Communication Server 8.2 User Manual

Issue 1

April 2000

Managing trunks 

362

Administering trunks for listed directory numbers 

As an example, we’ll administer trunk group 5 for both types of answer detection. 

To administer trunk group 5 for answer supervision from the network:

1. In the 

Trunk Group

 screen for group 5, type 

 in the Receive Answer 

Supervision field.

2. Press 

ENTER

 to save your change.

Now let’s administer answer supervision by timeout. We’ll set the timer to 15 
seconds. To administer trunk group 5 for answer supervision by timeout:

1. In the 

Trunk Group

 screen for group 5, type 

 in the Answer Supervision 

Timeout field.

2. Press 

ENTER

 to save your change.

Refer to 

‘‘Answer detection’’ on page 1141

 for detailed information about this 

feature.

Listed directory numbers (LDN) are the phone numbers given for an organization 
in public telephone directories. You can administer DEFINITY ECS so that calls 
to different listed directory numbers go to the same attendant group. How you 
administer your system for LDN calls depends on whether the calls are coming in 
over DID and tie trunks or over CO and FX trunks.

As an example, let’s say that one attendant group answers calls for 3 different 
businesses, each with its own listed directory number:

■

Company A — 855-2020

■

Company B — 855-1000

■

Company C — 855-1111

DID trunks and some tie trunks transmit part or all of the dialed digit string to the 
switch. If you want these calls to different numbers to go to one attendant group, 
you must identify those numbers for the switch on the Listed Directory Numbers 
screen.