User Manual

Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
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assistance from a third-party network server (STUN server) usually located on public
Internet. The IP phone can be configured to act 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.
The NAT traversal and STUN server are configurable on a per-line basis.
Procedure
NAT traversal and STUN server can be configured using the configuration files or locally.
Configuration File
<MAC>.cfg
Configure NAT traversal and
STUN server on the IP phone.
For more information, refer to
Network Address Translation on
page 367.
Local
Web User Interface
Configure NAT traversal and
STUN server on the IP phone.
Navigate to:
http://<phoneIPAddress>/servl
et?p=account-register&q=load
&acc=0
To configure NAT traversal and STUN server via web user interface:
1. Click on Account->Register.
2. Select the desired account from the pull-down list of Account.
3. Select STUN from the pull-down list of NAT.
4. Enter the IP address or the domain name of the STUN server in the STUN Server
field.
5. Click Confirm to accept the change.