Chapter 3-Video Protocols and Resolution Configuration for CP Conferencing

*It is recommend to set the endpoint to Motion to ensure the transmission of the higher frame rates of 25fps/30fps to the RMX.

‡MXP 990/3000 endpoints transmit 576x448 pixels. Other MXP endpoints may transmit other resolutions eg. CIF.

Content

Sharing and receiving Content is supported.

Bandwidth allocated to the Content channel during Content sharing may cause the video resolution to be decreased as from w448p to w288p.

When Content sharing stops and the full bandwidth becomes available, video resumes at the previous w448p resolution.

For more information see "H.239” on page 4-2.

Packet Loss Compensation

If there is Packet Loss in the network and Dynamic Bandwidth Allocation (DBA) is activated, allocating bandwidth for Lost Packet Recovery, video resolution decreases from w448p

to w288p.

When Packet Loss ceases and DBA no longer needs to allocate bandwidth for Lost Packet Recovery, the full bandwidth becomes available and video resumes at the previous w448p resolution.

For more information see "Packet Loss Compensation (LPR and DBA)” on page 4-50.

Enabling Support of the w448p Resolution

w448p resolution support for Tandberg endpoints requires setting of the following entities:

•Tandberg endpoint

•RMX flags

•RMX Conference Profile

RMX System Flag Settings

•The System Flag USE_INTERMEDIATE_SD_ RESOLUTION must be manually added to system.cfg with its value set to YES.

•The value of the PAL_NTSC_VIDEO_OUTPUT System Flag must be set to PAL.

If the System Flag is not defined as PAL, and if the current speaker is sending NTSC video stream, the frame rate will decrease to 15fps. Setting the flag to PAL will ensure that a frame rate of 25fps is maintained.

For more information about modifying System Flags, see "Modifying System Flags” on page 22-1.

SIP and ISDN endpoints

The System Flag only affects endpoints that support SD resolution and for which the RMX would have selected a transmission frame rate of 15 fps. Higher resolution endpoints are not affected by this flag.

All SIP and ISDN endpoints (not only Tandberg MXP) are connected as if they are Tandberg MXP causing the RMX to select w448p, because endpoint-type information from these endpoints is not guaranteed during capabilities exchange.

For flag changes (including deletion) to take effect, the RMX must be reset. For more information, see the "Resetting the RMX” on page 21-69.

Polycom, Inc.

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Polycom DOC2702A Content, Packet Loss Compensation, Enabling Support of the w448p Resolution, RMX System Flag Settings
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DOC2702A, RMX 1500 specifications

The Polycom RMX 1500, also known by its model number DOC2702A, is a significant player in the realm of video conferencing technology. Designed to enhance collaboration across various platforms, this versatile solution caters to the communication needs of medium to large enterprises, providing high-quality video, voice, and content sharing experiences.

One of the primary features of the RMX 1500 is its unparalleled scalability. The system supports up to 150 simultaneous video endpoints, allowing organizations to expand their video conferencing capabilities as needed. This flexibility makes it an ideal solution for growing businesses that require robust communication tools. The RMX 1500 can also handle a variety of video resolutions, from standard definition to HD, ensuring that users can enjoy clear and crisp visuals during their meetings.

The Polycom RMX 1500 utilizes advanced technologies such as the Polycom RealPresence technology, which significantly enhances video quality and reliability. This technology incorporates features like Adaptive Bandwidth Management, which optimizes video streams based on available bandwidth, thus ensuring a seamless experience even in less-than-ideal network conditions. This ensures that users can engage in meetings without interruptions or quality degradation, regardless of their location.

Another notable characteristic of the RMX 1500 is its robust interoperability with a wide range of video conferencing systems and protocols. This means that businesses can easily connect with partners, clients, and colleagues using different systems, reducing the barriers to effective communication. The RMX 1500 supports various codecs and standards, including H.323 and SIP, making it a versatile choice for organizations that work with multiple platforms.

Furthermore, the RMX 1500 is equipped with tools for content sharing, allowing participants to share presentations, documents, and other materials during meetings. This promotes interactive discussions and enhances collaboration among team members. In addition, the system features an intuitive user interface, making it easy for users to schedule meetings, manage participants, and control audio and video settings.

The product also places a strong emphasis on security, providing encryption options for video and audio streams to protect sensitive information shared during conferences. This commitment to security is essential for organizations that need to meet compliance standards and safeguard intellectual property.

In summary, the Polycom RMX 1500 (DOC2702A) is a powerful video conferencing solution that combines flexibility, scalability, and high-quality performance. With its advanced technologies, interoperability, content sharing capabilities, and emphasis on security, it serves as an invaluable tool for enhancing communication and collaboration in today’s fast-paced business environment.
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