Polycom, Inc.
19-1
19
Gateway Calls
The RealPresence Collaboration Server (RMX) 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 RMX 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 RMX. 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 RMX.
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 Profil
e.
•
H.239 Content
•
FECC - IP participants only as FECC is not supported by the ISDN protocol.
•
Recording. 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
.
•
Forwarding of all
DTMF
codes sent by participants in the
Gateway Session
to all
PSTN
and
ISDN
participants. This is enabled by adding the
ALWAYS_FORWARD_DTMF_IN_GW_SESSION_TO_ISDN
System Flag
to
system.cfg
and setting its value to
YES
.
Gateway calls are supported in AVC Conferencing Mode only.
Содержание RealPresence 2000
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