Configure Fax Voip Softphone with Callcentric

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callcentric.com is a popular SIP provider in the United States. Callcentric supports both T.38 and audio faxes. This service provider also offers phone numbers in the US/Canada and many other countries. To get an account you can register at the Callcentric website.



Configure SIP account



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

Password: password

SIP Registrar Server: callcentric.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: callcentric.com

Username: the phone number provided by the Callcentric




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.