Hi Adam,<br><br>The key piece of information is this:<br><font face="courier new, monospace">[NOTICE] switch_core_state_machine.c:226 sofia/external/<a href="tel:18005551234" value="+18005551234" target="_blank">18005551234</a> has executed the last dialplan instruction, hanging up.<br>
</font><br>You&#39;ve enabled &quot;fax detection&quot; on the call but you haven&#39;t told the call to actually do anything. From what you&#39;re doing it seems like you&#39;re wanting to detect a fax and then run the txfax application. But what happens if a fax is not detected? Also, what happens to the call in the interim, i.e. between the time you enable fax detect and the time it actually detects a fax tone? The call needs to do &quot;something&quot; while waiting for a fax tone. You may be better off sending this call to an extension and then having several dialplan actions, like &quot;answer&quot;, &quot;spandsp_start_fax_detect&quot;, and then a &quot;sleep&quot; or &quot;playback&quot; app, or something for the channel to do while it&#39;s waiting for fax tone.<br>
<br>Question: what do you want the call to do if no fax is detected?<br><br>-MC<br><br><div class="gmail_quote">On Fri, Sep 21, 2012 at 10:26 AM, Adam Johnston <span dir="ltr">&lt;<a href="mailto:ajohnston@blimessaging.com" target="_blank">ajohnston@blimessaging.com</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi all,<div><br></div><div>I&#39;ve been trying to use the spandsp_start_fax_detect application (with txfax as the callback) from the originate command but I keep getting a hangup before it completes.</div>
<div><br></div><div>
So far I&#39;ve tried calling the app directly:</div><div><font face="courier new, monospace">originate {ignore_early_media=&#39;true&#39;}sofia/gateway/mygateway/<a href="tel:18005551234" value="+18005551234" target="_blank">18005551234</a> &amp;spandsp_start_fax_detect(&#39;txfax /tmp/myfax.tif 3 ced&#39;)</font></div>

<div><br></div><div>Inline dialplan:</div><div><font face="courier new, monospace">originate {ignore_early_media=&#39;true&#39;}sofia/gateway/mygateway/<a href="tel:18005551234" value="+18005551234" target="_blank">18005551234</a> &#39;spandsp_start_fax_detect:txfax /tmp/myfax.tif 3 ced&#39; inline</font>
</div><div><br></div><div>..plus some other permutations but all end with the same result:</div><div><br></div><div><div><font face="courier new, monospace">[NOTICE] mod_spandsp.c:107 Enabling fax detection &#39;txfax&#39; &#39;/tmp/myfax.tif&#39;</font></div>

<div><font face="courier new, monospace">[DEBUG] switch_core_media_bug.c:456 Attaching BUG to sofia/external/<a href="tel:18005551234" value="+18005551234" target="_blank">18005551234</a></font></div><div><font face="courier new, monospace">[NOTICE] switch_core_state_machine.c:226 sofia/external/<a href="tel:18005551234" value="+18005551234" target="_blank">18005551234</a> has executed the last dialplan instruction, hanging up.</font></div>

</div><div><br></div><div>Am I misunderstanding how spandsp_start_fax_detect works?</div><span class="HOEnZb"><font color="#888888"><div><br></div><div>Adam Johnston<br>
</div>
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