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Softswitches & IP-PBXes

This section contains a listing of all Softswitches & IP-PBX systems that have been certified by T38Fax.com, as well as a configuration guide for each associated platform.

  • 3CX Setup Guide for Power-T.38 SIP Trunks

  • Asterisk Design Guide

  • FusionPBX

  • FreeSWITCH

  • FreePBX

  • NetSapiens

  • Digium Switchvox

  • Telinta

  • Grandstream: UCM6510 Series IP-PBX

  • Grandstream: UCM6200 Series IP-PBX

  • Grandstream: UCM6100 Series IP-PBX

  • FreePBX - PJSIP - Registration Auth

  • FreePBX - PJSIP - IP Auth

  • FreePBX - chan_sip - Registration Auth

  • FreePBX - chan_sip - IP Auth

  • Asterisk

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