Operation Manual

472 COMfortel 1400IP/2600IP/3600IP - Firmware V2.2G - Operation and Configuration V03 07/2015

Settings

Providers and PBXs

Configuring the STUN Server

A STUN server provides information on request to subscribers on a private network. This infor-

mation includes the IP address and port outside their private network that is viewed as the

source of their data. This information is entered in the requests, instead of the actual private IP

address/port.

Note: If you encounter problems with unilateral call connections, enabling the

RTP might help.

Important: Each port forwarding constitutes a security risk. For this reason

we recommend you use this functionality as little as possible.

You can configure the STUN server as follows:

• Separately for the provider or PBX

• Using the configuration manager

• Using the telephone

Using the Configuration Manager to Configure the STUN Server

Requirements:

– Set DNS server

1. Open the Settings > Providers & PBXs screen.

2. In the line that contains the provider/PBX, click Configure.

The provider/PBX configuration screen opens.

3. Click on the NAT tab.

4. In the STUN server IP/URL entry field, enter the STUN server. Possible entries:

5. In the STUN server port entry field, enter the port number. Possible entries:

6. Enter a value in the Interval for STUN server query (in minutes) entry field.

Possible entries:

IP address with a range of 0 to 255 (example: 103.103.103.103)

URL (example: www.stunserver.uk)

1 to 65535

1 to 60: A STUN server request is performed every 1 to 60 minutes.