Nortel Meridian Meridian 1 Implementation Manual page 133

Drop all conferees
The chairperson can drop all conferees from the conference, except the
chairperson, by dialing *90. The MICB does not issue an
announcement to the conferees before disconnecting. After the system
disconnects the conferees, the MICB card issues an announcement to
the chairperson indicating that there are no conferees on the
conference. The announcement is followed by 60 seconds of music.
The conference remains active, so conferees can dial in again.
Drop last dialed conferee
The chairperson can drop the last conferee to join the conference
through dial-out by dialing *91. The chairperson can drop the last
conferee to dial in by dialing *92. These commands are not repeatable
(that is, the chairperson can drop the last conferee to dial in, but not the
second-to-last to dial in). If the chairperson is the last to dial into the
conference, the MICB card cannot execute the *92 command.
Conference duration expansion
The chairperson can expand the duration of a conference by 15
minutes by dialing *98. If the expansion is successful, the chairperson
receives the voice message, "Your meeting duration has been
expanded." If the duration expansion is not successful, because there
are not enough resources, such as ports or DNs, the chairperson
receives the message, "Your meeting duration has not been expanded."
The maximum conference duration, including all chairperson
expansions, is 12 hours. The MICB card does not permit conference
duration expansion to a conference scheduled to end within three
minutes of the expansion request.
Chairperson command summary
Table 31 lists conference commands that the chairperson can execute
on the telephone set while a conference is in progress.
Table 31
Chairperson commands (Part 1 of 2)
Chairperson Command
*0<DN>#
*0#
*2<GN>#
*4
*7
Meridian Integrated Conference Bridge
Description
Dial out to a DN (called party directory number, which is not a conference
participant).
Dial out to the assistant DN.
Group call-out, where GN is the group number to call.
Lock or unlock the conference.
Volume control.
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Service Implementation Guide