AT&T MERLIN LEGEND Release 4.0 Feature Reference page 135

Feature Reference
Display
Forced Account
Code Entry
Forward and
Follow Me
Group Calling
Headset Options
Hold
As with any other call, the dialed digits appear on Line 1 of the display
as you set up a conference call. On MLX telephones, Line 1 of the
display shows the number of conference participants. In addition, the
MLX telephone display prompts you each time you press the Conf
button. The display also prompts you to drop a conference participant
after you press the Drop button; then it shows the updated conference
information on Line 1 and on Line 2 shows which line or extension was
dropped.
Beginning with Release 1.1, if the system is not in Hybrid/PBX mode or
you have no available SA or ICOM button, the prompt
appears on Line 2 of the display. After the system selects an SA or
ICOM button line or the originator selects a line, Line 2 displays the
prompt . After dialing a number or selecting another line, the
prompt on Line 1 changes to show call-handling information, such as
dialed digits. Then press Conf to connect all parties. The prompt on
Line 2 is replaced by the date and time, while Line 1 displays the
number of parties active on the call.
You must enter a separate account code for each outside call you add
to the conference.
Under certain circumstances, when calls received on a personal line
are forwarded to an outside telephone number, a person joining the call
is considered the conference originator and the forwarded call can be
conferenced. The person joining the call must share the personal line
and the trunk selected to forward the call and must join the in-progress
call by pressing the personal line button. If the person who joined the
call hangs up, all participants on the conference call are disconnected.
Calls waiting in the calling group queue or ringing at a calling group
member's extension cannot be added to a conference call. A user must
be connected to a calling group member before the call can be added
to the conference.
Headset Auto Answer is disabled and must be activated manually while
an MLX telephone user with a headset is setting up a conference.
The conference originator receives the Hold Reminder tone when the
conference is on hold for more than one minute as a result of using the
Hold button or adding other participants. If Direct-Line Console (DLC)
Operator Automatic Hold is programmed and used by a DLC operator
setting up a conference, the entire conference goes on hold.
Both sides of an inside call cannot be put on hold. Therefore, if the user
presses the Hold button while waiting on hold for a conference initiated
by another user (an inside call) or if the user presses the Conf button
while waiting on hold on an inside call, all participants are
disconnected.
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Conference