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FAQ

  • Is my Self-Care Password the same as my SIP Password?

  • How many simultaneous fax calls can I send/receive?

  • How do I dial out of your Service?

  • What is ECM and why do I need it?

  • Can I place voice calls using T38Fax?

  • Are international calls supported?

  • Does T38Fax.com store my Faxes?

  • Does T38Fax.com support DTMF?

  • Typical Use Case Scenarios

  • How do I contact Support?

  • How does T.38 Work?

  • Using T.38 versus G.711 Pass-through

  • Can I use a non-fax modem with T38Fax?

  • T38Fax IP Addresses and Port Usage

T38Fax Incorporated