To call through, an authentication code is needed. Authorized phone numbers can be stored in a list of trusted callers. After entering the PIN and the required destination number of the call setup is performed automatically.

 

This module is default in the T300/T500, when accidentally deleted from the system you can download the module here.

 

 

After installing the module, update the module to the latest version using the automatic update procedure:

Go to: Configuration - Server - updates - Press "Search now"

 

 

 

 

Download the module V.177