Good morning, bump... Any help on this? I just git pull: FreeSWITCH Version 1.6.14+git~20170209T234209Z~de2936af46~64bit (git de2936a 2017-02-09 23:42:09Z 64bit) Still have the issue where FS rejects the call when the reinvite occurs from the far end for T38. below is dump of dialplan/modspan/fslog: http://pastebin.com/1UeKkjnK here is the call flow: <PSTN> ->> T7000 Softswitch ->> FS Call comes from PSTN to T7000 which then passed G711 call to FS; when T7000 detects fax; it reinvites towards FS; which then FS sends back 488. =\ thank you for your help andy... On Wednesday, February 1, 2017 1:39 AM, "andymurray439@yahoo.com" <andymurray439@yahoo.com> wrote: Good evening, I noticed Bryan's thread on "BEHAVIOR CHANGE (YES PAY ATTENTION TO THIS IFYOU USE FAXING)" but still having issues. I'm running FreeSWITCH Version 1.6.14+git~20170130T165359Z~e9cb966d18~64bit (git e9cb966 2017-01-30 16:53:59Z 64bit) When a G711 call comes in and then the reinvite occurs from the calling side for T38; FS sends back a "488 Not Acceptable Here" I have set this in vars.xml per the suggestion: <X-PRE-PROCESS cmd="set" data="fax_enable_t38=true"/> Below is the pastebin of the siptrace: http://pastebin.com/hjnhEqym Below is the dialplan for it: <action application="answer" /> <action application="playback" data="silence_stream://2000"/> <action application="set" data="fax_enable_t38=true"/> <action application="rxfax" data="/tmp/FAX-${uuid}.tif"/> <action application="hangup"/> Am I missing anything else to just make this work? Thanks! andy....