Hi,
Does kamailio support PRACK method ? Any configuration change is needed?It appears
Kamailio does not like the PRAK when increasing Cseq. Here is the call flow:
A send INVITE --> Kamailio --> proxy the packet to BB send 180 Ringing -->
Kamailio -> proxy the packet to AA send PRAK (increase Cseq) --> Kamailio -->
proxy the packet to BB send 200 OK --> Kamailio -> proxy the packet to AKamailio
re-send 180 Ringing to A
Thanks,AS