AT&T RIM BlackBerry Bold MDC 9000 - Manual (Page 17)

Conference
Note: With DEFINITY G1 and G3 and System 75 you can have a conference call
which includes up to five people (including yourself); with DEFINITY G2 and
System 85, you can have a conference call which includes three people (including
yourself).
To add another person to
a call 1 Press Conf [dial tone]
Present call is put on hold
2 Dial number of other person to be added to call
3 When other person answers, press Conf
Note: You can privately discuss the call with the
newly added person at this time; if there is no
answer or if the line is busy, press
Conf twice to
return to original party.
All parties are now connected to the call
To drop the last person
added to the conference
call 1 Press the (unlabeled) Drop button
Drop
To disconnect from a
normal call, or to drop
the last person added to a
conference call 1 Press the (unlabeled) Drop button. (The Drop
button is located in the lower right corner of the LCD
display.)
Hold
To put a call on hold 1 Press Hold
LCD display icon winks for the line that is on
hold
2 You may place handset in base; the call remains
on hold
or
you can press another line button to answer another
call; the first call remains on hold
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