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[Freeswitch-users] Question about fax tone detection


 
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msc at freeswitch.org
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PostPosted: Mon Oct 12, 2009 1:12 pm    Post subject: [Freeswitch-users] Question about fax tone detection Reply with quote

On Mon, Oct 12, 2009 at 4:01 AM, homqua <ngay01042005@gmail.com (ngay01042005@gmail.com)> wrote:
Quote:

Hi,
I have implemented the solution for tone detection in wiki, and also answer
the channel before detecting the tone:
<condition field="destination_number" expression="^(055138419992)$">
   <action application="answer"/>
   <action application="tone_detect" data="fax 1100 r +15000 transfer fax
XML default"/>


<extension name="fax">
     <condition field="destination_number" expression="^fax$">
       <action application="answer" />
       <action application="sleep" data="1000"/>
       <action application="rxfax"
data="/usr/local/freeswitch/storage/fax/${caller_id_number}-${strftime(%Y-%m-%d-%H-%M-%S)}.tiff"/>
   <action application="set" data="fax_mode=recv"/>
       <action application="hangup"/>
     </condition>
   </extension>


But FS cannot recognize the tone, and therefore cannot move to fax
extension.  Below are the error in FS:

2009-10-12 10:57:16.702287 [NOTICE] switch_channel.c:602 New Channel
sofia/external/anonymous@anonymous.invalid
[c431f0a3-9231-4724-ba39-9e4ef7edfca2]
2009-10-12 10:57:16.703413 [INFO] mod_dialplan_xml.c:315 Processing
Anonymous->055138419992 in context public
2009-10-12 10:57:16.719288 [NOTICE] switch_ivr.c:1349 Transfer
sofia/external/anonymous@anonymous.invalid to XML[055138419992@default]
2009-10-12 10:57:16.719288 [INFO] mod_dialplan_xml.c:315 Processing
Anonymous->055138419992 in context default
2009-10-12 10:57:16.722289 [NOTICE] mod_dptools.c:649 Channel
[sofia/external/anonymous@anonymous.invalid] has been answered
2009-10-12 10:57:16.722289 [NOTICE] mod_dptools.c:1324 Enabling tone
detection 'fax' '1100'
2009-10-12 10:57:16.723302 [NOTICE] switch_core_state_machine.c:179 Hangup
sofia/external/anonymous@anonymous.invalid [CS_EXECUTE] [NORMAL_CLEARING]
2009-10-12 10:57:16.740285 [NOTICE] switch_core_session.c:1086 Session 1
(sofia/external/anonymous@anonymous.invalid) Ended
2009-10-12 10:57:16.740285 [NOTICE] switch_core_session.c:1088 Close Channel
sofia/external/anonymous@anonymous.invalid [CS_DESTROY]

And the trace for SIP messages:  http://pastebin.com/m4e47e7d9

If anyone has any idea, tell me please.
Thanks.

I think the trouble here is that you don't have anything else in the dialplan after the tone_detect. The tone_detect app is non-block, which means that it doesn't sit there and wait for a tone. If you want the dialplan to sit and wait then do a sleep app after your tone_detect. The other question I would have is this: what happens if the incoming call is not a fax? What do you want to do then?

-MC
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mcampbellsmith at gmai...
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PostPosted: Mon Oct 12, 2009 9:42 pm    Post subject: [Freeswitch-users] Question about fax tone detection Reply with quote

This is what I have in my dialplan and the fax is detected
beautifully. Note that in my case, extension 1000 will ring for a
second or two before the fax is detected. So in your example, the fax
does not have time to be detected, the dialplan exists and the call is
hungup.

When the fax is detected, the call is transferred to the receivefax
extension in context features. The extension 1000 does not have to be
answered for the transfer to occur.

<extension name="Local_1000s">
<condition field="destination_number" expression="^(10[01][0-9])$">
<action application="set" data="dialed_extension=$1"/>
<action application="export" data="dialed_extension=$1"/>
<action application="set" data="ringback=${au-ring}"/>
<action application="tone_detect" data="fax 1100 r +5000
transfer 'receivefax XML features' 1" />
<action application="set" data="hangup_after_bridge=true"/>
<action application="set" data="continue_on_fail=true"/>
<action application="bridge" data="user/${dialed_extension}@${domain}"/>
<action application="answer"/>
<action application="sleep" data="1000"/>
<action application="voicemail" data="default ${domain_name}
${dialed_extension}"/>
</condition>
</extension>

and in the features context I have
<extension name="receivefax">
<condition field="destination_number" expression="^receivefax$">
<action application="answer" />
<action application="playback" data="silence_stream://2000"/>
<action application="rxfax"
data="//usr//local//freeswitch//storage//${caller_id_number}-${uuid}.rxfax.tiff"/>
<action application="system"
data="/usr/local/freeswitch/scripts/emailfax.sh
/usr/local/freeswitch/storage/${caller_id_number}-${uuid}.rxfax.tiff"/>
<action application="hangup"/>
</condition>
</extension>
On Tue, Oct 13, 2009 at 5:00 AM, Michael Collins <msc@freeswitch.org> wrote:
Quote:


On Mon, Oct 12, 2009 at 4:01 AM, homqua <ngay01042005@gmail.com> wrote:
Quote:

Hi,
I have implemented the solution for tone detection in wiki, and also
answer
the channel before detecting the tone:
<condition field="destination_number" expression="^(055138419992)$">
   <action application="answer"/>
   <action application="tone_detect" data="fax 1100 r +15000 transfer fax
XML default"/>


<extension name="fax">
     <condition field="destination_number" expression="^fax$">
       <action application="answer" />
       <action application="sleep" data="1000"/>
       <action application="rxfax"

data="/usr/local/freeswitch/storage/fax/${caller_id_number}-${strftime(%Y-%m-%d-%H-%M-%S)}.tiff"/>
   <action application="set" data="fax_mode=recv"/>
       <action application="hangup"/>
     </condition>
   </extension>


But FS cannot recognize the tone, and therefore cannot move to fax
extension.  Below are the error in FS:

2009-10-12 10:57:16.702287 [NOTICE] switch_channel.c:602 New Channel
sofia/external/anonymous@anonymous.invalid
[c431f0a3-9231-4724-ba39-9e4ef7edfca2]
2009-10-12 10:57:16.703413 [INFO] mod_dialplan_xml.c:315 Processing
Anonymous->055138419992 in context public
2009-10-12 10:57:16.719288 [NOTICE] switch_ivr.c:1349 Transfer
sofia/external/anonymous@anonymous.invalid to XML[055138419992@default]
2009-10-12 10:57:16.719288 [INFO] mod_dialplan_xml.c:315 Processing
Anonymous->055138419992 in context default
2009-10-12 10:57:16.722289 [NOTICE] mod_dptools.c:649 Channel
[sofia/external/anonymous@anonymous.invalid] has been answered
2009-10-12 10:57:16.722289 [NOTICE] mod_dptools.c:1324 Enabling tone
detection 'fax' '1100'
2009-10-12 10:57:16.723302 [NOTICE] switch_core_state_machine.c:179 Hangup
sofia/external/anonymous@anonymous.invalid [CS_EXECUTE] [NORMAL_CLEARING]
2009-10-12 10:57:16.740285 [NOTICE] switch_core_session.c:1086 Session 1
(sofia/external/anonymous@anonymous.invalid) Ended
2009-10-12 10:57:16.740285 [NOTICE] switch_core_session.c:1088 Close
Channel
sofia/external/anonymous@anonymous.invalid [CS_DESTROY]

And the trace for SIP messages:  http://pastebin.com/m4e47e7d9

If anyone has any idea, tell me please.
Thanks.

I think the trouble here is that you don't have anything else in the
dialplan after the tone_detect. The tone_detect app is non-block, which
means that it doesn't sit there and wait for a tone. If you want the
dialplan to sit and wait then do a sleep app after your tone_detect. The
other question I would have is this: what happens if the incoming call is
not a fax? What do you want to do then?

-MC


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