Originally Posted by bulrush
I have a fax/printer machine. I also have VOIP phone service, that is, phone that goes over the internet. When I had a regular land line my fax worked. No that I have VOIP my fax doesn't work.
I have an HP all-in-one fax/scanner/inkjet printer. Are there special settings on my fax I have to do? It seems like it doesn't even get a dial tone when faxing, even though the fax is hooked to the phone line box. (There's a special model that the phone hooks to before going out the wall on a cable.)
Oh, this is for Comcast. I could call them but I hear their service is awful.
The reason is Bandwidth. The Digital phone provider giving you Voice over Internet Protocol (VoIP) limits the bandwidth (BW) to just the minimum for their optimization requirements. You can call the provider and get more BW but in most cases they want you to add a second line (Because their business case then justify's the BW being paid for that way), or will charge a small additional fee for the wider bw, for your fax machine. Some other systems can experience this same problem like DVR's or Sat Boxes that need to reach back to the programing center via phone for On Demand services such as PPV or programing updates. The Service provider can increase the VoIP Box BW sometimes over the internet or have you access the device and enter a code to open the other channel. Either way reach out to your VoIP provider and discuss it with their technical staff.