The RURI of an end-to-end ACK should always be equal to the remote dialog target, i.e. in this case the Contact URI in the 200 OK.
If the RURI of the ACK is not equal to the remote target, it's not a properly formed ACK. And certainly, it should not point to the OpenSIPS proxy itself. There's no reasonable way to work around it: the UA in question needs to be fixed. -- Alex Balashov | Principal | Evariste Systems LLC 303 Perimeter Center North, Suite 300 Atlanta, GA 30346 United States Tel: +1-800-250-5920 (toll-free) / +1-678-954-0671 (direct) Web: http://www.evaristesys.com/, http://www.csrpswitch.com/ Sent from my BlackBerry. Original Message From: Schneur Rosenberg Sent: Tuesday, February 2, 2016 13:22 To: OpenSIPS users mailling list Reply To: OpenSIPS users mailling list Subject: [OpenSIPS-Users] ACK not forwarding _______________________________________________ Users mailing list Users@lists.opensips.org http://lists.opensips.org/cgi-bin/mailman/listinfo/users