AT&T MERLIN LEGEND System Reference Manual page 238

Features
Feature Interactions
Auto Answer All
Auto Dial
Barge-In
Any of the multiline and single-line telephones that are compatible with the
system can be used as calling group member positions.
Any of the following telephones assigned as a DLC can be used as a calling
group supervisor's console:
MLX-20L™ telephones with or without a DSS
MLX-28D™ telephones with or without a DSS
BIS-22 with a display
61S-34 with or without a display
MERLIN II System Display Console with built-in DSS
Labels can be assigned to calling groups to identify the name of the group,
such as sales, service, or claims, on display telephones.
The system does not prevent users who are not members of a calling group
from using the Available and Unavailable programmed buttons or feature
codes. Call Management System (CMS) agents who may not be calling
group members can use these same codes to log in and out of the CMS.
The published number for a calling group can be a DID number.
Calling group members with analog multiline telephones can use Auto Answer
All when an answering machine is connected to their telephones. When the
feature is activated, all incoming calls ringing on the group member's telephone
(both calls for the calling group and calls to the group member's own
extension), are answered automatically by the answering machine.
The Call-ln-Queue Alarm button is assigned on a multiline telephone by
programming an inside Auto Dial button with the calling group's extension
number.
When a DSS adjunct is not available, Auto Dial buttons programmed with each
calling group member's extension are used by the calling group supervisor to
monitor group member availability.
Barge-In can be used for calling group members, but the member's extension
must be used instead of the calling group extension. If a user tries to use Barge-
In after dialing the calling group extension number and waiting in the queue, the
feature has no effect.
If a person uses Barge-In to reach another user who is waiting in a calling group
queue, the call is removed from the queue and both people and the delay
announcement, if programmed, are connected. If a person uses Barge-In for the
delay announcement extension and the device is playing a message to a caller,
the call is removed from the queue and both people and the delay
announcement are connected.
Group Calling 2-189