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41-001343-02 REV04 – 05.2014 4-31
Configuring STUN and TURN Servers Using the Aastra Web UI
Use the following procedure to configure STUN and TURN servers in your network using the Aastra Web UI.
Note:
The NAT IP configuration parameter takes precedence over the STUN and TURN parameters.
Aastra Web UI
1. Click on Advanced Settings->Network->Advanced Network Settings.
Configure STUN on the IP Phone
2. In the “STUN Server” field, enter the IP address and/or qualified domain name of the STUN server in your network. You can enter up to 2 val-
ues separated by a comma. The first value is the primary and the second value is the backup. For example:
10.50.103.12, stunbackup.aastra.com.
The STUN configuration is only used for media (RTP traffic) that goes through the server - not for signaling. (For signaling, you need to enable
Rport if the NAT device does not recognized SIP).
The STUN configuration applies globally to each phone.
If you configure both STUN and TURN on the phone, it discovers what type of NAT device is between the phone and the public network. If
the NAT device is full cone, restricted cone, or port restricted cone, the phone uses STUN. If the NAT device is symmetric, the phone uses
TURN. If you configure STUN only, the phone uses STUN without the NAT discovery process.
Notes:
• The NAT IP configuration parameter takes precedence over the STUN parameters.
• STUN does not work if the NAT device is symmetric.
3. In the “STUN Port” field, enter the port number of the STUN server. You can enter up to 2 values separated by a comma. The first value is the
primary and the second value is the backup. For example:
3478,3479
Default is 3478. Range of values are 0 to 65535.
4. Click Save Settings to save your changes.
Configure TURN on the IP Phone