[SR-Users] Re: No ACK from Kamailio

Hey Arseniy, I had a similar thing so I tweaked the default config a little. Here is the kemi python bit I use. if KSR.rr.loose_route() > 0: if KSR.is_method_in("B"): # do accounting ... KSR.setflag(FLT_ACC) # ... even if the transaction fails KSR.setflag(FLT_ACCFAILED) elif KSR.is_NOTIFY(): # Add Record-Route for in-dialog NOTIFY as per RFC 6665. KSR.rr.record_route() self.ksr_route_relay(msg) else: if KSR.is_ACK(): if KSR.tm.t_check_trans() > 0: # no loose-route, but stateful ACK # must be an ACK after a 487 # or e.g. 404 from upstream server self.ksr_route_relay(msg) else: self.ksr_route_dispatch(msg) # Goes to my dispatcher logic return -255 KSR.sl.sl_send_reply(404, "No request here") return -255 I use dispatcher to route between destinations and use double rr params as I sit behind NAT and have private endpoints I route to. https://www.kamailio.org/docs/modules/devel/modules/rr.html#rr.p.enable_dou… I also describe the rr params as well as depending on direction (to do NAT traversal.) So from PBX to Customer - KSR.rr.record_route_preset("PUB_IP" + ";r2=on", "PRIV_IP" + ";r2=on") And from Customer to PBX - KSR.rr.record_route_preset("PRIV_IP" + ";r2=on", "PUB_IP" + ";r2=on") Hope this helps you get it working. John. On Thu, 2 May 2024 at 12:48, Arseniy Moskvich via sr-users < sr-users(a)lists.kamailio.org&gt; wrote: