This page gives you the basics:
http://wiki.freeswitch.org/wiki/Mod_spandsp#spandsp_start_fax_detect

Something like this could work:

<extension name="fax detect">
  <condition field="destination_number" expression="^fax_detect$">
    <action application="answer"/>
    <action application="spandsp_start_fax_detect" data="transfer '1111 XML default' 4"/>
    <action application="transfer" data="2222 XML default"/>
  </condition>
</extension>

Try it out and don't forget the standard disclaimer...

-MC

On Sun, Feb 3, 2013 at 8:30 PM, George Assaad <gassaad@emassembly.com> wrote:
Hello,
I have one DID that I would like to detect the tone
1-  if fax goes to extension 1111.
2- If it is is not fax then t goes to extension 2222
How do that using   spandsp_start_fax_detect  ?

I am looking for the Inbound dialplan
Thanks in advance,

George

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