VoIP Phone ADSL NBN Telephone Systems VoIP Phone, ADSL, NBN. If you’ve never heard of Voice over Internet Protocol (VoIP Telephone Service), get ready to change the way you think about long-distance telephone calls. Voice over IP (VoIP Services, ADSL, NBN) is a method for taking analog phone signals and turning them into digital data that can be transmitted over … Continue reading VoIP Phone ADSL NBN