My mcu(Cluster) 3.5.2 was behind NAT hosted on AWS . SIP call not working because in sdp C line was sending local ip . Please find the below SDP. How we can fix this
o=- 2033931423 1704759831 IN IP4 10.0.1.63.
c=IN IP4 10.0.1.63.
m=audio 12192 RTP/AVP 0 101.
SIP room in kamailio is registering with private IP of the MCU, which is where sip call is not getting in initiated.
when MCU on direct pubic ip there is no issues.