Instant Fax ATA
Monster Technology
Jun-14th, 2018 7:33

Use of the Instant Fax ATA system requires you to purchase a proprietary ATA from Monster VoIP. 


Setup and management of your Instant Fax ATA is completed through your Setup or Support team.


Although it is possible to send faxes through any SIP ATA that is registered to the PBX using T.38 or G711 pass-through, these methods do not always satisfy the heavy fax user. This is a reflection of the fact that fax machines are especially vulnerable to latency and jitter. As a result, network problems that may not impede a regular voice call often interrupt a fax transmission and result in a dropped call.


The Store-and-Forward ATA solution allows faxes to be buffered before being transmitted to an analog fax machine.

  • For Inbound (DID) calls, faxes are received in the Monster VoIP data center (where last mile latency and jitter issues are not a concern) by a Store-and-Forward fax server and then transmitted to the ATA using a file transfer protocol that is not susceptible to latency and jitter concerns. Once they are received by the ATA, they are relayed to a local fax machine that is connected to the ATA with standard RJ-11 cabling.
  • For Outbound (Termination) calls, faxes from a local fax machine are intercepted and stored by the ATA and then transferred to a Store-and-Forward fax server in the Monster VoIP data center using a file transfer protocol that is not susceptible to latency and jitter concerns. From the fax server, they are relayed to the PSTN using high-bandwidth SIP connections.

Please refer images below for Fax Appliance:


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