Polycom® RealPresence Collaboration Server (RMX) 1500/2000/4000 Administrator’s Guide
4-10
Polycom, Inc.
•
Endpoints that do not have at least
H.263
capability can connect to the conference but
cannot share
Content
.
•
This option is not available in
SVC Conferencing Mode
and
CP and SVC Conferencing
Mode
.
H.263 (AVC CP Conferences)
Select this option when most of the endpoints support
H.263
and some endpoints support
H.264
. In such a case, all endpoints will share content using the H.263 protocol, and this
protocol will not change throughout the conference (fixed mode).
Bit rate allocation to the
Content
channel by the RMX is dynamic according to the conference
line rate and
Content Settings
selected for the conference. For more information see "
Content
Sharing Parameters in Content Highest Common (Content Video Switching) Mode”
on page
4-7
.
This option is not available in
SVC Conferencing Mode
and
CP and SVC Conferencing Mode
.
H.264 HD (AVC CP Conferences default)
The
H.264 HD
option should be selected only if most endpoints in the conference support
H.264
to ensure high quality
Content
.
When this protocol option is selected, endpoints must connect at
Content
bit rates above a
minimum as specified by specific
System Flags
to ensure high quality
Content
for all
participants. For more information about
System Flags
see "
Setting the Minimum Content Rate
for Each Content Quality Setting for H.264 HD”
on page
4-10
.
Bit rate allocation to the
Content
channel by the RMX is dynamic according to the conference
line rate and
Content Setting
selected for the conference. For more information see "
Content
Sharing Parameters in Content Highest Common (Content Video Switching) Mode”
on page
4-7
.
Endpoints that do not support
H.264
, or those that do not meet the minimum line rate
threshold for the
Content Setting
along with
ISDN
endpoints, are connected as
Legacy
Endpoints
and receive content through their video channel
If the
Send Content to Legacy
Endpoints
selection is disabled, these endpoints will not receive content.
Guidelines
•
Only endpoints that support
H.264
capability at a resolutions of
HD720p5
or higher will
be able to receive and send
Content
.
•
This option is not available in
SVC Conferencing Mode
and
CP and SVC Conferencing
Mode
.
•
When
H.264 HD
is selected, the
Send Content to Legacy Endpoints
selection is enabled by
default in the
Conference Profile – Video Settings
tab.
•
In
MPM+ Card Configuration Mode
, maximum supported content resolution is HD 720p.
•
Once an endpoint is categorized as a
Legacy Endpoint
and receives the content over the
video channel, it remains in this mode without the ability to upgrade to H.264 HD
content and receive content over the Content channel.
•
The minimum
Content Rate
required for allowing a participant to share
Content
is the
lower valued parameter when comparing the
System Flag
setting
(
Table 4-5
)
and the
content bit rate allocation
derived from the conference line rate (
Table 4-6
)
.
When the flag settings enable an endpoint to share Content at a content rate that is
lower than the conference content rate (
Table 4-6
), the content rate of the entire
conference is reduced to the content rate supported by that endpoint.
Setting the Minimum Content Rate for Each Content Quality Setting for H.264 HD
The following
System Flags
determine the minimum content rate required for endpoints to
share
H.264
high quality content via the
Content
channel.
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