Avaya Communication Manager Administrator's Manual page 338

Managing MultiMedia Calling
Video conferees can see only their local video and one other party. If more than two people are
involved in a video conference, the person who is speaking is the one whose video appears to
other conferees. The speaker's video shows the previous speaker. This changes dynamically
as the speaker changes.
Creating a multi-party video conference
All multimedia conferences must be controlled by a voice telephone. Multimedia conferees may
be added by calling the voice telephone or by having the voice telephone make a multimedia
call to other DVC endpoints. The controller can then conference together individual parties to
create a multimedia conference.
To set up a multimedia conference:
1. Determine who is going to be the conference controller.
2. At the appointed time, the conference controller calls his or her telephone from the
multimedia endpoint by dialing the 1-number extension. Once this call is established, the
controller conferences in other calls as if this were a voice conference. The controller
continues to add conferees in this manner until all conferees have joined, or until the
number of conferees reaches the administered limit.
3. The conference controller may also add voice or multimedia parties to the conference
spontaneously. The controller presses CONFERENCE, makes a voice or multimedia call to
a new party. To make a multimedia call, the controller must originate a call using the
mm-call button or FAC or the mm-multinbr button or FAC. After the new party begins
alerting, the controller may press CONFERENCE to add the party to the existing
conference call on hold.
Coverage
Multimedia calls to a Basic mode complex are subject to the same coverage criteria as voice
calls and follow the coverage path administered for the voice station of the Basic multimedia
mode complex.
If a plain voice station or a Basic mode complex is the covering party, the answering voice
station will receive audio only. If all voice stations in the coverage path have the station screen
Early Answer field set to n and the originator of the multimedia call was not a local Enhanced
mode complex, the answering station will hear hourglass tone.
If an Enhanced mode complex is the covering party, the answering voice station will receive
voice and video. If all voice stations in the coverage path have the station screen Early Answer
field set to n and the originator of the multimedia call was not a local Enhanced mode complex,
the answering station will hear hourglass tone.
Coverage: Multimedia calls and off-net call coverage
If the principal station's coverage path include a remote coverage point, the multimedia call will
cover off-switch as voice only. If the call is unanswered off-switch and proceeds to the next
coverage point on-switch, the multimedia nature of the call is preserved.
338 Administrator Guide for Avaya Communication Manager