Polycom 2000/4000 Benutzerhandbuch

Chapter 2-Additional Conferencing Information

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The RMX can be configured to send Content to H.323/SIP/ISDN 
endpoints that do not support H.239 Content (legacy endpoints) over the 

video (people) channel, allowing the participants using the legacy 

endpoints to view the Content as the other conference participants. 

•

This option is enabled only in MPM+ Card Configuration Mode and 

Resource Allocation Mode is set to Flexible Mode.

•

This option is valid when sending Content as a separate stream is 

enabled in the System Configuration and the flag: ENABLE_H239 is set 

to YES. 

•

One additional SD (3CIF) video resource is allocated to the 

conference when Content is sent to legacy endpoints. The allocation 

is done only when a legacy endpoint is connected to the conference 

and a Content session is initiated and transmitted via the video 
channel. 

Once the resource is allocated, it remains allocated to the conference 

until the conference ends. 

H.263 – Content is shared using H.263 even if some 
endpoints have H.264 capability.
Up to H.264 – H.264 is the default Content sharing 
algorithm.
When selected:

•

Content is shared using H.264 if all endpoints have 
H.264 capability.

•

Content is shared using H.263 if all endpoints do not 
have H.264 capability.

•

Endpoints that do not have at least H.263 capability 
can connect to the conference but cannot share 
Content.