Avaya Communication Manager Administrator's Manual page 354

Managing MultiMedia Calling
Joining a multimedia conference after T.120 data sharing has been enabled.
If a multimedia conference with T.120 data sharing is already active and it is desired to
conference in a new video endpoint, the new video endpoint can be conferenced into the
existing call. The new endpoint will be allowed into the data conference if there exists sufficient
ESM server resources for the new endpoint. The new endpoint will get voice/video and data
sharing if the new endpoint supports the data rate chosen by the system when T.120 data
collaboration was activated. If the endpoint does not support the pre-existing data rate, the new
endpoint will only receive voice and video.
Activating HOLD while on a T.120 data collaboration conference.
If an Enhanced multimedia complex is active on a multimedia call and the call has activated
T.120 data collaboration, the user should be receiving voice/video and data. If the station places
this existing call on hold, audio and video will be disconnected for the current call. The data
collaboration portion of the call will remain intact and unaffected. While this T.120 data
conference is on hold, the user will only be allowed to receive audio on all other call
appearances. Thus a user is limited to one call appearance that has T.120 data collaboration
active.
Single server or switch data collaboration.
When all parties involved in data collaboration conference are located on the same physical
Avaya DEFINITY Server or media server, there is no restriction on the type of user. The parties
may be any combination of Enhanced multimedia complexes, Basic multimedia complexes or
stand-alone H.320 DVC systems.
Multi-switch data collaboration.
When all parties involved in data collaboration conference are not located on the same physical
Avaya media server, the parties located on the Avaya server hosting the data conference (i.e.
the server that activated mm-datacnf) may be any combination of Enhanced multimedia
complexes, Basic multimedia complexes or stand-alone H.320 DVC systems.
Note:
All parties on remote servers must not be Enhanced multimedia complexes. They
Note:
must be Basic multimedia complexes or stand-alone H.320 DVC systems.
Prior to originating or receiving a multimedia mode call, the mm-basic feature button or feature
access code can be used to dynamically change an Enhanced mode complex into a Basic
mode complex and back again.
Voice station audio vs. H.320 DVC system audio
When an Enhanced mode complex originates or receives a voice or multimedia call, the call is
originated with the station handset or answered with the station handset. The audio path will be
through the handset. If the user's H.320 DVC system has speakers and a microphone, the user
may wish to use the H.320 DVC system for audio in much the same manner as a built-in or
separate telephone speakerphone. The user can move the station's audio to the H.320 DVC
system by selecting an mm-pcaudio feature button on the voice station. There is no feature
access code for this function.
354 Administrator Guide for Avaya Communication Manager