Fax Over IP
Making phone calls over the Internet (Voice over Internet Protocol, or VoIP) has become increasingly popular. Compressing fax signals is different than compressing voice signals, so a new standard (T.38) has been created for this. If the VoIP adapter and gateway are T.38 compliant, most fax machines can simply be plugged into the VoIP adapter instead of a regular phone line.
- Fax machine → VoIP adapter → VoIP gateway → Phone line → Fax machine (or vice versa)
As with regular faxes, only one fax can be sent or received at a time. Depending on the specific method/implementation (see below), advantages of using the internet can include
- No extra telephone line required for the fax
- Paperless communication, integrated with email
- Reduction in phone costs




