Hi, I would like to use this thread to ask further about this appication. Up to now I used execute_on_tone_detect, and tried changing it to spandsp_start_fax_detect. When a call arrives to a registered extension, it works like a charm. However, I have a few dedicated fax extensions which has no phone registered, thus they arrive directly to voicemail. When this happens, I get a console message "Max Tones Reached!" and no fax is detected. Any idea what I am doing wrong? I am running version 1.6.9. Thanks! __Yehavi: 2016-07-13 10:15 GMT+03:00 Gonzalo Gasca Meza <gascagonzalo@gmail.com>:

This worked:

<action application="spandsp_start_fax_detect" data="transfer 'fax' 10 ced"/>

From documentation:

Uses the spandsp code to detect fax tones which should be more reliable than using tone_detect. By default, the application detects CNG tones (sending side) tone_type can be set to "ced" to detect CED tones (receiving side).

https://wiki.freeswitch.org/wiki/Mod_spandsp#Controlling_the_app

On Tue, Jul 12, 2016 at 11:41 PM, Gonzalo Gasca Meza < gascagonzalo@gmail.com> wrote:

...

Hi all,

I'm configuring FS 1.7 to perform a dialout. If a fax is detected, I would like transfer call to an specific extension/application. I tried example in FreeSwitch cookbook, but doesn't seem to detect the FAX. http://pastebin.com/0F6M1DSe

Topology:

Freeswitch --> SIP Provider -- PSTN ---> Fax machine

Only when I try from CLI invoking spandsp_start_fax_detect it works:

originate {ignore_early_media='true',fax_enable_t38=true,fax_verbose=true,fax_use_ecm=false,fax_enable_t38_request=false}sofia/gateway/twilio/ +18884732963 'spandsp_start_fax_detect:txfax /tmp/txfax-sample.tiff 10 ced,sleep:10000' inline

These are the logs using Freeswitch Cookbook sample:

http://pastebin.com/0F6M1DSe

I have tried the following combinations without success:

<action application="export" data="execute_on_fax_detect='execute_extension fax'"/>

<action application="spandsp_start_fax_detect" data="txfax '/tmp/txfax-sample.tiff 10 ced'"/>

<action application="spandsp_start_fax_detect" data="transfer 'fax XML default' 2"/>

<action application="spandsp_start_fax_detect" data="transfer '9179 XML default' 2"/>

This is my config http://pastebin.com/6Awmxk14

<extension name="telephonist">

<condition field="destination_number" expression="^handle_calls$">

<action application="answer"/>

<action application="log" data="INFO handle_calls application match"/>

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

<action application="set" data="transfer_ringback=${us-ring}"/>

<action application="export" data="execute_on_fax_detect='execute_extension fax'"/>

<action application="playback" data="silence_stream://20000"/>

<action application="hangup"/>

</condition>

</extension>

<extension name="fax_handler">

<condition field="destination_number" expression="^fax$">

<action application="log" data="INFO FAX detected"/>

<action application="txfax" data="/tmp/txfax-sample.tiff 10 ced"/>

<action application="log" data="INFO FAX completed"/>

<action application="hangup"/>

</condition>

</extension>

<extension name="fax_receive">

<condition field="destination_number" expression="^9178$">

<action application="answer" />

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

<action application="rxfax" data="$${temp_dir}/rxfax.tif"/>

<action application="hangup"/>

</condition>

</extension>

<extension name="fax_transmit">

<condition field="destination_number" expression="^9179$">

<action application="txfax" data="$${temp_dir}/txfax-sample.tiff"/>

<action application="hangup"/>

</condition>

</extension>

Thanks

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