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<pre>This is in fact the exact problem. We use local channels when sending out faxes.
Thanks for your quick reply.
On Tue, Dec 1, 2020 at 6:23 PM Steve Sether <<a href="http://lists.digium.com/mailman/listinfo/asterisk-dev">ssether at usinternet.com</a>> wrote:
><i> I'm having a lot of trouble getting PJSIP to send a fax via T.38 in
</i>><i> Asterisk 16.14.1.
</i>><i>
</i>><i> From the pcap, I see the call being made, it connects, RTP goes in both
</i>><i> directions, the far-end requests a re-invite using t.38, Asterisk sends
</i>><i> an OK, the OK is acked, and the far ends starts sending t.38 packets,
</i>><i> asterisk stops sending RTP.
</i>><i>
</i>><i> Then Asterisk basically sends nothing else. No T.38 packets are sent by
</i>><i> Asterisk, No SIP, nothing. The far end eventually gives up sending
</i>><i> t.38, and sends a bye, ending the call.
</i>><i>
</i>
Do you have a Local channel in the mix? If so then there is a known
issue[1] which is being worked on.
[1] <a href="https://issues.asterisk.org/jira/browse/ASTERISK-29035">https://issues.asterisk.org/jira/browse/ASTERISK-29035</a>
--
Joshua C. Colp
Asterisk Technical Lead
Sangoma Technologies
Check us out at <a class="moz-txt-link-abbreviated" href="http://www.sangoma.com">www.sangoma.com</a> and <a class="moz-txt-link-abbreviated" href="http://www.asterisk.org">www.asterisk.org</a></pre>
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