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Chapter 3-Video Protocols and Resolution Configuration for CP Conferencing
Polycom, Inc. 3-23
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:
— On RealPresence Collaboration Server (RMX) 1500/RealPresence Collaboration Server
(RMX) 2000/RealPresence Collaboration Server (RMX) 4000
— With MPMx cards
— 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.
• HD720p30 resolution is supported at bit rates greater than 600 kbps. The following table
summarizes the resolutions supported at the various bit rates.
*
Dependant on the PC’s capability
• System Resource usage is the same as for the H.264 protocol. Table 3-4 summarizes
System Resource usage for each of the supported resolutions.
Table 3-3 RTV - Resolution by Bit Rate
Resolution Bitrate
QCIF Bitrate <180kbps
CIF30 180kbps < Bitrate < 250kbps
VGA (SD30) 250kbps < Bitrate < 600kbps *
HD720p30 600kbps < Bitrate *
Table 3-4 RTV - Resources by Resolution
Resolution HD Video Resources Used
QCIF / CIF30 0.333
VGA (SD30) / W4CIF 0.5
HD720p30 1