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RMX 2000 Administrator's Guide - Polycom Support

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Chapter 2-Additional Conferencing Information<br />

2-16<br />

Table 2-5 H.239 Content Options (Continued)<br />

Field Description<br />

Content<br />

Protocol<br />

7 Click OK.<br />

Sending Content to Legacy Endpoints<br />

H.263 – Content is shared using H.263 even if some<br />

endpoints have H.264 capability.<br />

Up to H.264 – H.264 is the default Content sharing<br />

algorithm.<br />

When selected:<br />

• Content is shared using H.264 if all endpoints have<br />

H.264 capability.<br />

• Content is shared using H.263 if all endpoints do not<br />

have H.264 capability.<br />

• Endpoints that do not have at least H.263 capability<br />

can connect to the conference but cannot share<br />

Content.<br />

The <strong>RMX</strong> can be configured to send Content to H.323/SIP/ISDN<br />

endpoints that do not support H.239 Content (legacy endpoints) over the<br />

video (people) channel, allowing the participants using the legacy<br />

endpoints to view the Content as the other conference participants.<br />

<strong>Guide</strong>lines for Sending Content to Legacy Endpoints<br />

• This option is enabled only in MPM+ Card Configuration Mode and<br />

Resource Allocation Mode is set to Flexible Mode.<br />

• This option is valid when sending Content as a separate stream is<br />

enabled in the System Configuration and the flag: ENABLE_H239 is set<br />

to YES.<br />

• One additional SD (3CIF) video resource is allocated to the<br />

conference when Content is sent to legacy endpoints. The allocation<br />

is done only when a legacy endpoint is connected to the conference<br />

and a Content session is initiated and transmitted via the video<br />

channel.<br />

Once the resource is allocated, it remains allocated to the conference<br />

until the conference ends.

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