Avaya Communication Manager Administrator's Manual page 353

T.120 Data conferencing is made possible through the Extended Services Module (ESM)
server, which is an adjunct to the Avaya DEFINITY Server. Up to six parties may participate in a
single data conference, and up to 24 parties may use ESM facilities for data collaboration at any
given time.
The following steps add data sharing to a video conference:
1. Set up a multimedia conference.
2. Once a multimedia call is active, any member can initiate data collaboration by pressing the
mm-datacnf button. Or, to use the feature access code to initiate a data conference, press
the Transfer button. A second line-appearance becomes active and you hear dial tone. Dial
the multimedia data conference feature access code. Confirmation tone is heard and the
system automatically reselects the held call appearance of the multimedia conference.
Avaya Communication Manager will select an MLP data rate acceptable to all H.320 DVC
systems in the current call.
If the system does not have sufficient ESM server resources available for all parties
currently in the call, activation of T.120 data sharing will be denied. The mm-datacnf status
lamp will flash denial or the mm-datacnf FAC will produce reorder.
3. Each H.320 DVC system in the conference call is joined to the data conference. On many
DVC systems, the provided GUI may prompt the user with a dialog box, requesting the user
to select a specific conference to join. With MMCH, there should only be one conference
available to select.
4. The user must now use the PC's GUI to begin application sharing. The method for
beginning application sharing or file transfer is different for each H.320 multimedia
application. One of the H.320 DVC systems activates data sharing from the H.320 DVC
vendor provided GUI. See your H.320 DVC system documentation for details.
5. The same H.320 DVC system as in step 4, opens an application, whiteboard, etc. to share
and the image of the application is displayed on all H.320 DVC systems in the conference.
For details on how multiple users may control the shared application, see the vendor
provided documentation for your specific H.320 DVC system.
6. To end the data collaboration session and retain the voice/video conference, the station that
selected the mm-datacnf button or FAC may press the mm-datacnf button or hit transfer
and dial the mm-datacnf deactivation FAC.
Note:
Currently, many endpoints do not respond correctly to ending the data
Note:
collaboration session and retaining voice/video. Some H.320 DVC systems drop
the entire call. Avaya recommends that once T.120 data sharing has been
enabled for a conference, that it remain active for the duration of the conference
call. When all endpoints have dropped from the call, the T.120 resources will be
released.
Enhanced Mode MM Complex
Issue 1 June 2005 353