We have installed Kamailio-5.0 in Debian-8, Configured P, I & S-CSCF servers and running successfully...
and we are able to make SIP calls(Video&Audio) successfully...
Now we are trying to install on Ubuntu 16.04(Kamailio-5.0) and configured P-CSCF, I-CSCF and S-CSCF severs also...
P-CSCF server working fine...
While running I-CSCF and S-CSCF servers we are below error and exiting...