AT&T MERLIN LEGEND Release 4.0 Feature Reference page 132

Feature Reference
Other Multiline Telephones
To arrange a conference call using a multiline telephone, press the Conf button
after receiving a call or dialing the first outside number or extension. The green
LED next to the button used to make the call flashes to indicate that the person
is on hold for the conference. (An outside participant hears Music On Hold if it is
programmed, and an inside participant hears nothing.) Then select another line
button, dial the next number, and press the Conf button again. Pressing the
Conf button a second time connects all participants (including you).
To add another person, press the Conf button again. The green LEDs next to
the line buttons flash, but the participants can converse. Then select a line or
dial a number, and press the Conf button again. Repeat the process for other
conference participants. Up to two outside lines and three extensions (including
you) can be in the conference. You can converse privately with each participant
before pressing the Conf button to join other participants.
Calls to busy numbers cannot be added to a conference. An originator who
reaches a busy number can press any of the line buttons associated with the
conference call to disconnect the call to the busy number before continuing to
add participants.
To selectively drop a participant, press the Drop button followed by the line
button for the participant to be dropped. To leave the conference call
temporarily without disconnecting the call, press the Hold button. To rejoin a
held conference call, press any line button representing a conference
participant. To end the conference, hang up; all participants are disconnected.
Drop buttons are automatically assigned to Line 6 on MDC 9000 and MDW
9000 telephones.
Single-Line Telephones
To arrange a conference call using a single-line telephone, press and release
the Recall or Flash button or switchhook after receiving a call or dialing the first
outside number or extension. The participant automatically goes on hold (an
outside participant hears Music On Hold if it is programmed, and an inside
participant hears nothing). Then dial the other number and press and release
the Recall or Flash button or switchhook again. All participants are connected
on the conference call.
A total of three participants can be included on a conference call originated
from a single-line telephone. You can converse privately with each participant
before pressing and releasing the Recall or Flash button or the switchhook to
join other participants.
Calls to busy numbers cannot be added to a conference. If you reach a busy
number, you can press and release the Recall or Flash button or switchhook to
drop the outside line.
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Conference