AT&T MERLIN LEGEND System Reference Manual page 130

Features
Recall
Signaling
Speed Dial
Station Message Detail
Recording
System Access
Transfer
System Programming
Related Features
A single-line telephone user with a Recall button adds a participant to a
conference call and connects all participants by using the Recall button. In
addition, the Recall button can be used to drop the most recently added
participant or to drop a busy number.
Signaling can be used during a conference.
The Conference button is pressed to enter the Flash special character in a
Personal Speed Dial or System Speed Dial telephone number. The Drop button
is pressed to enter the Stop special character.
When a conference call includes inside and outside participants, records are
generated only for outside participants. When a call is dropped from a
conference call, it is considered a completed call and is sent to the SMDR print
queue.
Calls on Intercom or System Acoess buttons (including Shared System Access
buttons) can be included in a conference call in the Hybrid/PBX mode, if a user
involved in a conference call on a System Access button also has a Shared
System Access button for one of the conference participants, the call is active at
the System Access button and not at the Shared System Access button for the
other participant.
A conference call with three or more participants (including the conference
originator) cannot be transferred. However, if the conference originator has one
person on hold for the conference (the originator pressed the Conference button
after reaching the first person) and after dialing the number for the next
participant decides to transfer the call, he or she can press the Transfer button
to transfer the call instead of conferencing it.
Assign the host system Conference dial code.
Options -> More -> BhndSwitch -> Conference
Assign the host system Drop dial code.
Options -> More -> BhndSwitch -> Drop
H o l d
Conference 2-81