| Configuring Account Settings | 85
Parameter Description Configuration Method
Local Early Media
Enable or disable the local early
media feature on the device.
• Off—the local system sends
an Open Logical Channel
(OLC) message and receives
the acknowledgement
message of OLC from the
far site. After receiving the
acknowledgement message,
the system may transmit RTP
streams to the far site.
• On—the system sends an
OLC message to the far
site and then transmits
RTP streams to the far site
directly before receiving
the acknowledgement
message of OLC. For some
gatekeepers, you need to
enable this feature to avoid
black screen during a call.
Default: Off.
Web user interface
H.323 Tunneling
The tunneling feature relies on H.225 system-to-system connectivity (via TCP) to pass H.245 messages, and
uses the H.225 communication channel without creating a separate TCP socket connection (per H.323 call)
for media control. H.323 tunneling is supported by the video conferencing system. To use H.323 tunneling,
make ensure the participants in the call enable H.323 tunneling simultaneously. When you log in to the
StarLeaf platform or use an H.323 account, you can configure the H.323 tunneling feature.
Procedure
1. Do one of the following:
• On your web user interface, go to Account > H.323 or Account > VC Platform > Video
Conference Platform > Platform Type > StarLeaf.
• On your VCS, go to More > Setting > Advanced > H.323.
On your VP59, tap Setting > Advanced > H.323.
• On your CTP20, tap Setting > Advanced > H.323.
2. Configure and save the following settings:
Parameter Description Configuration Method
H.323 Tunneling
Enable or disable the system
to send all signaling and media
through the HTTP tunnel.
Default: Disabled.
Web user interface
Endpoint
CTP20
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