This option allows you to enable or disable (default) the Call Conference (3-Way Calling) feature. For example, you may want to enable this feature if the line is going to be used for voice calls.

Navigate to [https://rdm.ooma.com/](https://rdm.ooma.com/devices) and sign into your account.

Click the icon for "Advanced Settings" on the port you need to update.

Note that this feature requires your Ooma AirDial to be on firmware version 7.5.3 or higher to work.

Enabling/Disabling the Call Conference (3-Way Calling) feature