Yealink VC400, Administrator'S Manual

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Administrator’s Guide for Yealink Video Conferencing Systems
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4.
Select the desired video codec from the
Enable Codecs
column, and click or to
adjust the priority of the selected video codecs.
5.
Click
Confirm
to accept the change.
Call Protocol
The system supports SIP and H.323 protocols for incoming and outgoing calls. H.323 is
commonly used to communicate to other video conferencing system. SIP is commonly used to
communicate with other VoIP devices. The default call protocol on the system is Auto. The
system preferentially uses the H.323 protocol to place calls. If there is no available H.323
account on the system, the system will switch to the SIP protocol for placing calls. You can
specify the desired protocol for the system to place calls. Ensure the remote system supports
the same protocol.
The call protocol parameter on the system is described below:
Parameter Description Configuration Method
Call Protocol
Specifies the desired call protocol
for placing calls.

Auto
—the system
automatically uses the
available call protocol.

SIP
—the system uses the SIP
Remote Control
Web User Interface