sip-alg-detector.3cx.com

  1. sip-alg-detector.3cx.com - is there a US alternative?

    When we run the firewall check (that does not lie...), we always get the following result: resolving 'stun2.3cx.com'... done resolving 'stun3.3cx.com'... done resolving 'sip-alg-detector.3cx.com'... done testing 3CX PhoneSystem 01 SIP Server... failed(How to resolve?) stopping service... done...