<p>I have been trying to get this working with an HT-502, Asterisk 1.4.31, and Gafachi but no luck so far.</p>
<p>The VSP should send a re-invite for the T.38 media change on detection of the fax tone. </p>
<p>I'm using canreinvite=yes on the trunk and canreinvite=no on the HT-502 extension. Also have t38pt_udptl=yes in sip.conf and T.38 Auto & Fax Detection Callee in the HT line settings.</p>
<p><blockquote type="cite">On May 18, 2010 5:16 AM, "Jonas Kellens" <<a href="mailto:jonas.kellens@telenet.be" target="_blank">jonas.kellens@telenet.be</a>> wrote:<br><br>
<div text="#000000" bgcolor="#ffffff">
<font face="Helvetica, Arial, sans-serif">Hello list,<br>
<br>
I read on <a href="http://voip-info.org" target="_blank">voip-info.org</a> that Asterisk 1.4 support T38 passthrough.<br>
So I guess this means that I can have a Grandstream HT503 with T38
support and an analogue faxmachine on the other side of my Asterisk and
a T38-account with a ITSP on the other side of my Asterisk machine,
right ?!<br>
<br>
The fax coming from the faxmachine passes the HT503 to my Asterisk and
my Asterisk sends the fax to the ITSP which places it on the PSTN.<br>
<br>
What do I place in the dialplan ??<br>
<br>
The only dialplan I find is :<br>
<br>
/etc/asterisk/extensions.conf:<br>
[from-sip]<br>
exten => 200,1,Dial(SIP/${EXTEN}|300)<br>
exten => 201,1,Dial(SIP/${EXTEN}|300) <br>
<br>
on <a href="http://www.voip-info.org/wiki/view/Asterisk+T.38" target="_blank">http://www.voip-info.org/wiki/view/Asterisk+T.38</a><br>
<br>
But I don't understand how this little dialplan can make my fax go from
the HT503 to my ITSP... I understand I need to use the
Dial()-command... ?!<br>
<br>
<br>
Kind regards,<br>
<br>
Jonas.<br>
</font>
</div>
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