I have configured VaxTele SIP server on my local server.Listen IP and Domain/Realm for the server is 10.0.0.107 and Listen Port 5060.
Then i created a user 1020 in the server having same password.
These configuration working good with xLite application but when i tried to test with VoIP SIP sdk getting error 503 DNS server error.
I have tried all these options.
1.One instance
2.Seperate Port say 5065
3.Adding proxy details the remove it.
4. Adding/Removing phoneCfg.AdditionalDnsServer = "8.8.8.8";
5. Adding/Removing phoneCfg.RtpStartPort = 44018;
6. Adding/Removing phoneCfg.ActiveNetworkInterface = "Local Area Connection-IPV4";
But still no luck.