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Chapter 4-Video Protocols and Resolution Configuration for CP Conferencing
Polycom, Inc. 4-13
Additional Video Resolutions
The following higher video quality resolutions are available:
• CIF 352 x 288 pixels at 50 fps.
• WCIF 512 x 288 pixels at 50 fps.
• WSD 848 x 480 pixels at 50 fps.
• W4CIF 1024 x 576 pixels at 30 fps.
• HD 720p 1280 x 720 pixels at 30fps
Additional Intermediate Video Resolutions
Two higher quality, intermediate video resolutions replace the transmission of CIF (352 x
288 pixels) or SIF (352 x 240 pixels) resolutions to endpoints that have capabilities between:
• CIF (352 x 288 pixels) and 4CIF (704 x 576 pixels) – the resolution transmitted to these
endpoints is 432 x 336 pixels.
• SIF (352 x 240 pixels) and 4SIF (704 x 480 pixels) – the resolution transmitted to these
endpoints is 480 x 352 pixels.
• The frame rates (depending on the endpoint’s capability) for both intermediate
resolutions are 25 or 30 fps.
Microsoft RTV Video Protocol Support in CP Conferences
Microsoft RTV (Real Time Video) protocol provides high quality video conferencing capability
to Microsoft OC (Office Communicator) Client endpoints at resolutions up to HD720p30.
Interoperability between Polycom HDX and OCS endpoints is improved.
Guidelines
•The RTV protocol is supported:
— In SIP networking environments only
— In CP mode only
• OCS (Wave 13) and Lync Server (Wave 14) clients are supported.
• RTV is supported in Basic Cascade mode.
• RTV is the default protocol for OCS endpoints and Lync Server clients connecting to a
conference.
• RTV participants are supported in recorded conferences.
• RTV participant encryption is supported using the SRTP protocol.
• Video Preview is not supported for RTV endpoints.
• Custom Slides in IVR Services are not supported for RTV endpoints.