IMS / VoLTE Mobile Networks RFCs & Standards SDM Voice over IP

ENUM – DNS based Call Routing

Using DNS to resolve E.164 phone numbers to routable SIP URIs

Australian Telco RFCs & Standards Voice over IP

Numbering Systems in Australia: E.164 vs 0-NDC-SN

Description of E.164 and 0-NDC-SN numbering used in Australia