Polycom WEBCOMMANDER 8 - Manual (Page 242)

MGC WebCommander User’s Guide
7-32
• 4CIF
• Encryption
• FECC (H.320 and H.323)
Limitations
• In Continuous Presence conferences - Software and Quad View modes
are disabled
• H.239 is not supported in:
— ISDN (H.320) calls
— H.320 Cascading conferences
— MIH Cascading conferences
— Simple cascading conferences
— T.120 conferences
— Double Gateway configurations
Using this feature the People video stream and the Content video stream are
treated differently by the endpoints.
Polycom Visual Concert PC
Polycom Visual Concert enables the sending of two separate video streams:
video and data. Typically, the video stream is transmitted in the standard
H.263 resolution in high frame rate while the data video stream is transmitted
in a higher resolution but lower frame rate.
Polycom Visual Concert can be enabled for Video Switching conferences for
both H.320 and H.323 participants.
The Visual Concert feature is available with Polycom's ViewStation PC
endpoints. In order to activate this option, the Polycom Visual Concert PC
application must be installed on the same computer deployed as the data
source. This computer is connected via the LAN to the ViewStation endpoint
that will broadcast the data to all conference participants. The data stream
may be received by both ViewStation and View Station FX endpoints.
• The H.239 standard is enabled/disabled in the system.cfg file. For For more
information see the MGC Manager documentation
• The H.239 protocol is not supported by the SIP standard