Install xul-ext-tbdialout by entering the following commands in the terminal:
sudo apt update sudo apt install xul-ext-tbdialout
Description:
facilitates clicking the phone numbers in the address book
Allows a user to click to dial in the address book. . This package does not provide or prefer any particular phone technology. It simply invokes the handler configured for tel or sip URIs. The handler could be a softphone in the local desktop or some process or script that sends the chosen number to a PBX for controlling a desk phone.
Homepage: http://www.oak-wood.co.uk/oss/tbdialout
Version: 1.7.2-2
Section: universe/mail