Chapter 2-Conference Profiles
Polycom, Inc. 2-5
connect to Continuous Presence conferences at resolutions of 720X576 pixels for
PAL systems and 720X480 pixels for NTSC systems. For more information, see
"Video Resolutions in AVC-based CP Conferencing” on page 3-1.
—High Definition (HD) – HD is an ultra-high quality video resolution that uses he
H.264 and H.264 High Profile video algorithms. Endpoints are able to connect to
conferences at the following resolutions:
•720p (1280 x 720 pixels)
•1080p (1920 x 1080 pixels)
For more information, see "Video Resolutions in AVC-based CP Conferencing” on
page 3-1.
Supplemental Conferencing Features
In addition to Standard Conferencing the following features can be enabled:
•H.239 – Allows compliant endpoints to transmit and receive two simultaneous streams
of conference data to enable Content sharing. H.239 is also supported in cascading
conferences. Both H.263 and H.264 Content sharing protocols are supported. If all
endpoints connected to the conference have H.264 capability, Content is shared using
H.264, otherwise Content is shared using H.263.
For more information, see "Content Sharing” on page 4-1.
•Lecture Mode – The lecturer is seen by all participants in full screen while the lecturer
views all conference participants in the selected video layout.
For more information, see "Lecture Mode” on page 4-38.
•Presentation Mode (CP Conferences only) – When the current speaker’s speech
exceeds a predefined time (30 seconds), the conference layout automatically changes to
full screen, displaying the current speaker as the conference lecturer on all the
participants’ endpoints. During this time the speaker’s endpoint displays the previous
conference layout. When another participant starts talking, the Presentation Mode is
cancelled and the conference returns to its predefined video layout. Presentation mode
is available with Auto Layout and Same Layout.
—If the speaker in a video conference is an Audio Only participant, the Presentation
Mode is disabled for that participant.
—Video forcing works in the same way as in Lecture Mode when Presentation Mode
is activated, that is, forcing is only enabled at the conference level, and it only
applies to the video layout viewed by the lecturer.
•Encryption – Used to enhance media security at conference and participant levels. For
more information, see "Media Encryption” on page 4-27.
•Conference Recording - The Collaboration Server enables audio and video recording of
conferences using Polycom RSSrecording system.
Operator Conferences (CP only Conferences)
Offers additional conference management capabilities to the Collaboration Server users,
enabling them to attend to participants with special requirements and acquire participant
details for billing and statistics. This service is designed usually for large conferences that
require the personal touch. For more information, see Chapter10, “Operator Assistance &
Participant Move” on page10-1