Configure Fax Voip Softphone with T38FAX

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T38FAX service allows you to send and receive T.38 faxes. This service provider also offers phone numbers in the United States. To get an account you can register at the T38FAX website.


Configure SIP account



Username (or SIP-ID): the phone number provided by T38FAX

Password: password

SIP Registrar Server: sip.t38fax.com



Configure Outgoing Call Routing



On the General page, in the Dial on Line area, check that the following settings are used:


VOIP Protocol: SIP

Dial on SIP Server: sip.t38fax.com

Username: the phone number provided by T38FAX




Automatic Fax Reception


When configuring your incoming rule, make sure that T.38 support option is selected.




Send or Receive T.38 fax


Make sure that T.38 FAX option is enabled in the main window.