Hello,

OpenSIPS shouldn't respond with the ACk - that should originate from the caller side and OpenSIPS should relay it.
Please post the full SIP trace for your call.

Best Regards,

Vlad Paiu
OpenSIPS Developer
http://www.opensips-solutions.com

On 20.03.2015 16:13, Stuart Mills, Invosys wrote:

Hi,

I’m currently experiencing an issue when using OpenSIPS and FreeSWITCH within the same network.

Calls arrive at the OpenSIPS border, then I use the dispatcher module to send to one of 3 FreeSWITCH instances.

On a bad call it seems like 200OK is being sent back from FreeSWITCH on calls that will drop, it tries time and time again until giving up after 30 seconds, but OpenSIPS isn’t responding with the ACK. The IP addresses in the trace I’ve got look good, all internal NAT addresses so I’m not sure how it could be missing this packet.

Have any one experienced this using a similar setup? I can post the opensips.cfg file if necessary.

Regards,

*Stuart Mills*

Senior Network Engineer

*Invosys Ltd.*

Direct. 0161 444 7403

Web. www.invosys.com <http://www.invosys.com/>


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