@jeder@aetios If the printer has fax built in and an analog phone connection you need some sort of device (Cisco ATA's or a fritzbox can do this) which connects to the EPVPN SIP network (over ip) and then has an analog phone connector to connect the multifunction to. Tho if you are using a fritzbox it has a virtual fax built in. I guess there's also linux software available which can do this over SIP
@jeder@aetios We are using EPVPN instead of an actual phone network/provider because it's free. It's just a private "network" where people can connect to.
@jeder@aetios Seems like it could work if you want to use a real fax. If you just want to play around with EPVPN and virtual faxes you can look into Hylafax (software) which seems to be able to do the trick on Linux