Our Power-T.38 SIP trunks are officially certified for use with Dialogic SR140. Click below to download Dialogic's official document outlining the specific SR140 configuration settings required to connect to Power-T.38.

Download SR140 Config Guide 





After following the SR140 config guide, the following registry entry should be added on the GFI FaxMaker server under HKLM\Software\GFI Fax & Voice\Faxmaker\config:  

  • Type: String value
  • Name: AppendDomainToClip
  • Value: sip.t38fax.com