faxing

  1. Connexium Partner

    Solved Does 3cx officially supports ECM for inbound faxes?

    Hello, I know how people cringe when someone mentions faxing and VOIP on this forum. There is also a million thread about it. But there is one question I cannot seem to find the official answer to, either on this forum or with Google. (No, i'm not trying Bing!) Q: Does 3CX officially supports...

  2. SIP RE-INVITE - T.38 Issues

    I'm using t38fax.com to terminate faxes (using T.38 not G.711) using an HT812 (Grandstream), SPA112 (Cisco) and FSP 2.4 (Software T.38 Fax integration for Microsoft Fax Services). They all work perfectly when connecting to their server (sip.t38fax.com) directly. However if I put 3cx in the mix...
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