T38Fax was founded in 2002 by people who had been working with fax technology since the early days of the internet — back when sending a facsimile over a packet-switched network seemed genuinely exotic.
As the telecommunications industry shifted from circuit-switched (TDM) phone lines toward SIP and VoIP, we watched what happened to fax. Carrier after carrier — large and small — built next-generation networks that treated fax as a footnote. The standard existed and was well defined. Implementing it correctly took a depth of fax expertise most VoIP providers simply did not have. They’re voice people.
By 2013, we had come to a frustrating but clarifying conclusion: we could not put our hand on our heart and recommend a single SIP trunk provider with a truly credible fax implementation at the core of their network. So we decided to build one ourselves. The result is Power-T.38. See why it’s built differently.