when using jitsi and srtp i get  SIP/2.0 488 Not Acceptable here
tried few other sip clients and all return the same error
 
the only thing I noticed is that although fs is set tosrtp
at line 510 freeswitch send sip invite with
m=audio 17672 RTP/AVP 96 9 0 8 103 3 101 13
instead of
m=audio 17672 RTP/SAVP 96 9 0 8 103 3 101 13

https://pastebin.freeswitch.org/24346

https://www.dropbox.com/sh/hho493y2g9qykpq/AACvUjG9iT3oEvJvSg2KcatAa?dl=0

 

Kind Regards Chris