For more reliable operation, the fax machine is connected to the analog IPP telephone network. It is installed in the printer room (019). Its number is
+49 89 3299 4002
The multi function printer in the secretariat can also send faxes and is programmed to send the same number, while actually its number is 4003.
VoIP fax
In principle there is the option to install virtual faxes, even a separate one for everyone in the cluster. However, this option has not been explored yet and it might simply be unnecessary. If you want to know more, ask Gebert.