“Extension” - is the extension of the telephone line (PBX) or the Centrex system. It works as an association and allows calling to certain telephone sets without the necessity of dialing the telephone number, but only by dialing a short combination of digits, reaching the desired subscriber.
To use Switzernet, nothing is more simple: you just need a highspeed Internet connection, ADSL or cable, and one of our handsets. Plug it to Internet and that