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RMX 2000 Administrator's Guide Version 7.6.1 - Polycom

RMX 2000 Administrator's Guide Version 7.6.1 - Polycom

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<strong>Polycom</strong> <strong>RMX</strong> 1500/<strong>2000</strong>/4000 Administrator’s <strong>Guide</strong><br />

Possible values: AUTO, G711A, G711U, G722<br />

Default: G711A<br />

Controlling Resource Allocations for Lync Clients Using the RTV Video Protocol<br />

The number of resources used by the system to connect a Lync client with RTV is<br />

determined according to the conference line rate and the Maximum video resolution set in<br />

the Conference Profile.<br />

In versions 7.6 and earlier, when conferences are set to line rates above 600 kbps, the <strong>RMX</strong><br />

could allocate up to three video resources to Lync clients connecting using the RTV video<br />

protocol.<br />

From version <strong>7.6.1</strong>, the system flag MAX_RTV_RESOLUTION enables you to override the<br />

<strong>RMX</strong> resolution selection and limit it to a lower resolution. Resource usage can then be<br />

minimized the 1 or 1.5 video resources per call instead of 3 resources, depending on the<br />

selected resolution.<br />

Possible flag values are: AUTO (default), QCIF, CIF, VGA or HD720.<br />

For example, if the flag is set to VGA, conference line rate is 1024Kbps, and the Profile<br />

Maximum Resolution is set to Auto, the system will limit the Lync RTV client to a resolution<br />

of VGA instead of HD720p and will consume only 1.5 video resources instead of 3<br />

resources.<br />

When set to AUTO (default), the system uses the default resolution matrix based on the<br />

conference line rate.<br />

To change the default flag setting, add the MAX_RTV_RESOLUTION flag to the System<br />

Configuration flags and set its value. For information, see the <strong>RMX</strong> 1500/<strong>2000</strong>/4000<br />

Administrator’s <strong>Guide</strong>, "Manually Adding and Deleting System Flags” on page 21-16.<br />

The following table summarizes the <strong>RMX</strong> resources allocated to a Lync Client based on the<br />

MAX_RTV_RESOLUTION flag setting, the connection line rate and the video resolution.<br />

Table H-3 Selected video resolution based on flag setting and conference line rate and core<br />

processor<br />

Maximum<br />

Resolution<br />

Value<br />

Line Rate<br />

Selected Video Resolution Per Core Processor<br />

Quad Dual Single<br />

AUTO > 600 kbps HD720p 30fps VGA 30fps VGA 15fps<br />

250 kbps - 600 kbps VGA 30fps VGA 30fps VGA 15fps<br />

180 kbps - 249 kbps CIF CIF CIF<br />

64 kbps - 179 kbps QCIF QCIF QCIF<br />

HD720p > 600 kbps HD720p 30fps HD720p 13fps VGA 15fps<br />

250 kbps - 600 kbps VGA 30fps VGA 30fps VGA 15fps<br />

180 kbps - 249 kbps CIF CIF CIF<br />

64 kbps - 179 kbps QCIF QCIF QCIF<br />

H-46 <strong>Polycom</strong>, Inc.

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