I am trying to implement twilio voice call using SIP.
I am following below blog for voice call. I have created two SIP endpoint and I want to do call between these two endpoints https://www.twilio.com/blog/2017/08/making-phone-calls-using-twilio-sip.html
I am using Linphone and ABTo Android Softphone to test voice call. Setup of endpoints is done in softphones and it registered with twilio: 101@{domain}.sip.us1.twilio.com
& 102@{domain}.sip.us1.twilio.com
While I am going to call from one end point to other end point I am getting default programmable voice and then ringing call and call dismiss after ringing once.
I am getting this warning in twilio Debugger:
Warning - 13254
Dial->Sip: SIP URI DNS does not resolve or resolves to an non-public IP address
Msg "Host name DNS cannot be resolved."
ErrorCode "13254"
invalidAddress "{domain}.sip.us1.twilio"
LogLevel "WARN"
How can I resolve this to do voice call using two sip endpoints?