Yealink VC800 Administrator's Guide

Configuring Network
61
port number that the NAT has allocated for the UDP connections to remote parties. The
protocol requires assistance from a third-party network server (STUN server) usually located on
public Internet. The IP phone can be configured to work as a STUN client, to send exploratory
STUN messages to the STUN server. The STUN server uses those messages to determine the
public IP address and port used, and then informs the client. For more information, refer to
RFC3489.
Capturing packets after you enable the STUN feature, you can find that the VC800 video
conferencing system sends Binding Request to the STUN server, and then mapped IP address
and port is placed in the Binding Response: Binding Success Response MAPPED-ADDRESS:
59.61.92.59:19232.
STUN feature parameters on the system are described below:
Parameter
Description
Configuration Method
Active
Enables or disables the STUN
(Simple Traversal of UDP over NATs)
feature on the system.
Default: Disabled
Remote Control
Web User Interface
STUN Server
Configures the IP address or the
domain name of the STUN (Simple
Traversal of UDP over NATs) server.
Default: Blank
Remote Control
Web User Interface
STUN Port
Configures the port of the STUN
(Simple Traversal of UDP over NATs)
server.
Default: 3478
Remote Control
Web User Interface
NAT Traversal
Configures the NAT traversal type.
You can configure it for the SIP
account or SIP IP call separately.
Web User Interface

Yealink VC800 Specifications

General

Brand	Yealink
Model	VC800
Category	Conference System
Language	English