After running FreeSWITCH for a couple of years for our office voice phone system, I trying to get incoming FAX to work.

I followed the recommendation in the wiki, and set up a DID number this way:

  <extension name="inbound_fax">

    <condition field="destination_number" expression="^(my_fax)$" require-nested="false">

      <condition field="${cond(${caller_id_name} == ${caller_id_number} ?true:false)" expression="^true$">

        <action application="set" data="effective_caller_id_name=${cidlookup(${caller_id_number})}"/>

        <anti-action application="playback" data="silence_stream://2000"/>

      </condition>

      <action application="set" data="fax_enable_t38_request=true"/>

      <action application="set" data="fax_enable_t38=true"/>

      <action application="rxfax" data="/tmp/FAX-${uuid}.tif"/>

      <action application="hangup"/>

    </condition>

  </extension>

I attempted to send a fax from an ordinary fax machine connected to a POTS AT&T line. The freeswitch.log file is not very helpful, it just says the fax was not successful. But I think I may have a clue from the behavior.

When rxfax starts, I hear what sounds like the normal FAX answer tone, and my FAX stops sending the CNG tone. But the answer tone (is it the CED?) just keeps going. After a long time, I hear a brief lower pitched tone, then it goes back to the answer tone, until my fax machine gives up and hangs up.

There doesn't seem to be a description for this symptom in the wiki documentation.

My provider is Flowroute. I'm using FreeSWITCH Version 1.2.7.

-- 

Steve

On Fri, Aug 2, 2013 at 9:42 PM, Steve Underwood <steveu@coppice.org> wrote:

You seem to be making a mountain out of a mole hill. Unless you have
some very specific need for HylaFAX, just install FreeSwitch and let it
FAX for you. 

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