Operation Manual

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

Settings

Providers and PBXs

Configuring NAT Keep Alive

The interval for NAT Keep Alive shows how often (in seconds) NAT Keep Alive packets are sent

to maintain the NAT mapping in the firewall.

You can configure NAT Keep Alive as follows:

• Separately for the provider or PBX

• Using the telephone

• Using the configuration manager

Using the Configuration Manager to Configure NAT Keep Alive

1. Open the Settings > Providers & PBXs screen.

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

3. Select the tab NAT.

4. Under NAT keep alive select or clear the NAT keep alive check box.

5. Click on NAT keep alive interval (s) and then enter a value in the entry field. Possible

entries:

Note: Some providers lock accounts if the NAT keep alive interval is too

short. As a rule, this is reported with error message 503 during SIP regis-

tration. If this problem occurs, we recommend you reduce the value (e.g. to

180).

Further steps:

– Save your settings before you leave the screen.

Using the Telephone to Configure NAT Keep Alive

1. Tap on Apps > Settings > Providers & PBXs.

2. Tap on the name of the provider/PBX.

Enables NAT Keep Alive.

Disables NAT Keep Alive. (No further action is required.)

1 to 255: NAT Keep Alive packets are sent every 1 to 255 seconds.