AT&T MERLIN LEGEND Release 4.0 Feature Reference page 540

Feature Reference
Auto Answer
Intercom
Automatic Line
Selection
Automatic Route
Selection
Callback
Caller ID
Calling Restrictions
Call Waiting
Conference
540
System Access/Intercom Buttons
When the Auto Answer Intercom feature is activated, a Hands-Free Unit
(HFU) cannot be used to answer calls on a Shared SA button.
SA buttons (including Shared SA buttons) or ICOM buttons can be
programmed as part of an Automatic Line Selection (ALS) sequence.
You should not interleave different button types (personal line, Pool,
SA, or ICOM); for example, in Hybrid/PBX or Key mode, the sequence
might include all SA or ICOM buttons first, then Pool, then personal line
buttons.
When a call is made on a Shared SA button, the ARS Facility Restriction
Level (FRL) that applies is the level programmed for the telephone with
the button, not the level for the principal extension.
Callback can be used on an SA or ICOM button. When Callback is used
on a Shared SA button, the callback call from the system rings and the
LED next to the button flashes only at the telephone that originated
Callback.
If a user other than the person originating Callback selects a Shared
SA button with a queued callback request and lifts the handset, the
user hears the queuing tone and the green LED on the originator's
telephone goes from flashing to on. If the user hangs up, the green LED
on the originator's telephone goes back to flashing and the system
directs the callback call to the originator. If the user does not hang up,
the system directs the callback call to the user and not to the callback
originator.
Both SA and Shared SA extensions display Caller ID information on
Line 1 of the first screen of the display. This information remains on the
answering extension's display and is cleared from the other extensions.
If another user picks up on the call, that person sees
principal extension user sees the caller information of the person who
picked up; it is displayed on Line 2 of the first screen.
When a call is made on a Shared SA button, the calling restrictions that
apply are those programmed for the extension with the button, not those
for the principal extension.
A telephone is considered busy when all SA or ICOM buttons (except
SA Originate Only or ICOM Originate Only) are in use. The user can
dial the Call Waiting feature code to pick up a waiting call only when an
SA Originate Only, Shared SA, or ICOM Originate Only button is
available.
Calls on SA, Shared SA, or ICOM buttons can be included in a
conference call. If a user involved in a conference call on an SA button
also has a Shared SA button for one of the conference participants, the
call is active at the SA button, not at the Shared SA button.
, and the
In Use