Once a new printer or fax machine has been installed, follow this simple procedure to check if everything works

1. Send a fax to 0800820302 (SWISSCOM auto responder)
2. The fax is successfully sent if the led indicating data transfer is on
3. Once the fax is received by the auto responder, it will send it back.

If the fax is sent back and received correctly, the installation is functional.