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Polycom®, Inc. 606
Gateway Calls
The RealPresence Collaboration Server (RMX) 1500/2000/4000 can be used as a gateway that provides
connectivity across different physical networks and translates multiple protocols for point-to-point rich media
communications.
The Collaboration Server supports the widest range of video and audio algorithms. It allows sites with
different frame rates, connection speeds, audio algorithms, video resolutions and network protocols to
transparently connect with one another. It also enables multipoint conference creation from an endpoint.
A special conference acting as a Gateway Session is created on the Collaboration Server. It includes one
dial-in connection of the endpoint initiating the Gateway Session and one or several dial-out connections to
endpoints. It provides connectivity between the various protocols: H.323, SIP, ISDN and PSTN.
To enable the gateway functionality a special Gateway Profile is defined on the Collaboration Server.
Gateway Functionality
The following features and capabilities are supported in gateway calls:
● Gateway Sessions are in CP Mode only.
If Video Switching is selected in the Profile assigned to the Gateway Session, the system ignores this
setting and will run the Gateway Session in CP mode.
From Version 7.2, Gathering phase is not supported in gateway calls, even if it is defined in the
Profile assigned to the Gateway Profile.
● Sharing Content using H.239 protocol
● FECC.
Note: Only IP participants can use FECC as it is not supported by the ISDN protocol.
● Recording.
Note: The Recording Link is not considered as a participant and therefore, the gateway session will
automatically end when only one of the participants remains connected in addition to the recording
link. The video of the Recording Link is not included in the display of the video of the gateway call.
● Forwarding of DTMF codes from the Gateway Session to a conference running on another gateway,
MCU or DMA. This enables the participant to enter the required conference and/or chairperson
password when connecting to another conference.
DTMF forwarding is enabled when there are only two participants connected to the Gateway Session.
• Gateway calls are supported with AVC calls only.
• Gateway calls, ISDN Connections and Video Switching conferences are not supported with
RealPresence Collaboration Server (RMX) 1800.