
RealPresence Collaboration Server (RMX) 800s/Virtual Edition Administrator’s Guide
Polycom®, Inc.
138
●
In non-Cascaded environments:
Content Video Switching mode, Content sharing rate, resolution and frame rate is negotiated
according to the capabilities of highest common capabilities of all endpoints connected to the
conference.
Endpoints which do not support High Profile will not receive content through the Content channel.
●
In Cascaded environments:
Content sharing rate, resolution and frame rate must be pre-defined and endpoints which do not
support these capabilities will not receive content though the Content channel.
For more information see
Sharing Content Using Multiple Content Resolutions Mode
.
SIP BFCP Content Capabilities
SIP Clients supporting BFCP over UDP
,
when connected to conferences on the Collaboration Server, can
share Content with
endpoints supporting the following Content sharing protocols:
●
BFCP/TCP
●
BFCP/UDP
●
H.323/ H.239
Guidelines for Using SIP BFCP Content
For SIP Clients that support both BFCP/TCP and BFCP/UDP:
●
The preferred protocol is BFCP/UDP.
●
When used in Cascading conferences, the Cascade Link must be H.323.
●
BFCP/UDP is supported in both IPv4 and IPv6 addressing modes.
●
SIP BFCP capabilities are by default declared to all endpoints. If, however, the endpoint identity is
hidden by a proxy server, these capabilities will not be declared by the Collaboration Server.
Capabilities declaration is controlled by the
ENABLE_SIP_PPC_FOR_ALL_USER_AGENT
system
flag.
The default value of the
ENABLE_SIP_PPC_FOR_ALL_USER_AGENT
system flag is
YES
resulting in BFCP capability being declared with all vendors’ endpoints unless it is set to
NO
. When
set to NO, the Collaboration Server will declare SIP BFCP capabilities to Polycom and Avaya
endpoints.
●
The
ENABLE_FLOW_CONTROL_REINVITE
System Flag should be set to
NO
when SIP BFCP
is
enabled.
●
If these System Flags don’t exist in the system, they must be manually added. For more information
see
Modifying System Flags
.
●
BFCP capabilities are not supported in Microsoft ICE environment.
BFCP support in dial-out Connections
●
For dial-out connections to SIP Clients, BFCP/UDP protocol can be given priority by adding the
adding the
SIP_BFCP_DIAL_OUT_MODE
system flag to system.cfg and setting its value to UDP.
The Collaboration Server’ s Content sharing determined by the System Flag’s settings and SIP Client
capabilities are summarized in the following table.
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