Yealink VC400 Administrator's Manual page 106

Administrator's Guide for Yealink Video Conferencing Systems
Enter the keep alive interval in the Keep Alive Interval field.
2.
Click Confirm to accept the change.
3.
Rport
Rport in RFC 3581, allows a client to request that the server sends the response back to the
source port from which the request came. Rport feature depends on support from a SIP server.
The rport parameter on the system is described below:
Parameter
RPort
To configure rport feature for SIP account via web user interface:
Click on Account->SIP Account.
1.
90
Description
Enables or disables NAT Rport
feature. You can configure it for the
SIP account or SIP IP call separately.
Default: Enabled
Configuration Method
Web User Interface