by: Djai Tanji
Sending faxes using VoIP system is still limited because its voice codecs does not match and is not designed for fax transmission. The fax sound basically cannot fit in the Voice over Internet Protocol channel. People in VoIP are trying to make a solution by defining a substitute IP-based resolution for sending fax-over-IP called T.38 protocol. Another potential remedy to conquer this limitation is to turn the fax system into a message switching system that does not require a real-time info transmission like sending a fax as a remote printout or email attachment. The end system can thoroughly buffer the incoming data via fax before printing or displaying the fax image.