Update, manually modifying the To-Domain in ACK has fixed this, I saved the
key value pair Call-ID/To-Domain of 200OK from CISCO and for corresponding
ACK with same Call-ID modified the $td
same problem appeared in BYE for the call, again same fix by modifying the
To-Domain for the same Call-iD in
Yeah sure, attached here is the trace from the CISCO logs. Not in pcap
format.
Also this is the flow of the call.
+---+ +--+ +--+
|Provider |+> +Kamailio +-->+CISCO IAD |
+---+ +--+ +-+
Is the UAC in this case a 2543 endpoint by chance? Can you send a complete SIP trace of the entire setup?