Learn in the textbookInternet Connection Services and Telecommunications Carriers
DefinitionIP telephony (IP電話) is a phone service that converts voice into data and exchanges it over an IP network, a network that carries data using the IP communication protocol.
ExplanationThe internet is one kind of IP network. The technology that turns voice into packets (small chunks of data) and sends and receives them in real time is called VoIP.
AnalogyInstead of chartering a private train for your voice, you put it on a shared bus that also carries other passengers and their luggage.
Memory hookVoIP stands for Voice over IP. Read over as "riding on," and you get voice riding on IP.