Yealink VC400 Administrator's Manual page 101

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 VC400/VC120 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
Enables or disables the STUN
(Simple Traversal of UDP over NATs)
Active
feature on the system.
Default: Disabled
Configures the IP address or the
domain name of the STUN (Simple
STUN Server
Traversal of UDP over NATs) server.
Default: Blank
Configures the port of the STUN
(Simple Traversal of UDP over NATs)
STUN Port
server.
Default: 3478
Configures the NAT traversal type.
You can configure it for the SIP
account or SIP IP call separately.

NAT Traversal


Default: Disabled
Description
Disabled
STUN
StaticNat
Configuring Network
Configuration Method
Remote Control
Web User Interface
Remote Control
Web User Interface
Remote Control
Web User Interface
Remote Control
Web User Interface
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