T38Fax is a T.38 Fax over IP (FoIP) service provider. We offer PSTN termination and origination (fax sending and receiving) over SIP trunks that have been optimized to offer extremely reliable faxing over WAN and LAN connections . Take advantage of our 30-day free trial, connect any T.38-capable device to our network and experience reliable fax send & receive with no wires, and no strings attached!