Yealink VC400 Administrator's Manual page 168

Administrator's Guide for Yealink Video Conferencing Systems
The SIP IP call by proxy parameters on the system are described below:
Parameter
SIP IP Call by
Proxy
To configure the SIP IP call by proxy via web user interface:
Click on Setting->Call Features.
1.
Select the desired value from the pull-down list of SIP IP Call by Proxy.
2.
Click Confirm to accept the change.
3.
152
Description
Configures the SIP IP call by proxy.
Off—when dialing the URI of

the far site, the system actually
uses SIP IP address to establish
a connection.
On—when dialing the URI of

the far site, the system uses SIP
account to establish a
connection. The outbound
proxy server should be
configured to resolve
hostname before dialing.
Default: Off
Configuration Method
Web User Interface