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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Is anybody else having trouble with T38 -> g711 gateway with either v1.6 or latest master? Initially I thought my problems might have been limited to calls bridging to mod_freetdm (i.e. T38 in -> PRI out), but today I was able to reproduce the problem using SIP only.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I entered a Jira on the issue yesterday, but was hoping that more eyeballs on the problem might reveal something.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='text-indent:.5in'><a href="https://freeswitch.org/jira/browse/FS-9008">https://freeswitch.org/jira/browse/FS-9008</a><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Not sure if everyone can read Jira tickets, so here's the gist of what I can see happening:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='margin-left:.5in'>- FS1 txfax to FS2 <o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'>- FS2 sets the following parameters, then bridges call to FS3 <o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'>** fax_enable_t38_request=true <o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'>** execute_on_answer=t38_gateway self <o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'>- FS3 answers, then calls rxfax <o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'>- bidirectional g711 between FS1/FS2 and FS2/FS3 <o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'>- FS1 sends T38 reinvite to FS2 <o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'>- FS2 responds 100 Trying <o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'>- FS2 starts sending T38 packets to FS1 (unexpected), while still sending g711 to FS3 (expected) <o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'>- 39 seconds later FS2 sends BYE to FS1, but using a new CSeq/branch not seen elsewhere in either leg (?) <o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'>- FS2 finally responds to T38 request from FS1, but with 486 Busy Here instead of 200 OK <o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'>- FS2 sends repeated BYE to FS1 (e.g. at 1,2,4 seconds) <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks!<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Dave.<o:p></o:p></p></div></body></html>