The differences between IPT, Internet Telephony, and VoIP April 22, 2009Posted by HubTechInsider in Definitions, Telecommunications.
Tags: networking, Telecommunications, VoIP
People use several IP-realted terms interchangeably. However, according to the International Telecommunications Union (ITU; http://www.itu.int), there are distinctions between the following terms:
* IPT – The transmission of voice, fax, and related services over a packet-switched IP-based network. Internet telephony and VoIP are specific subsets of IPT.
* Internet Telephony – Telephony in which the principal transmission network is the public internet. Internet telephony is commonly referred to as Voice over the Net, Internet phone, and net telephony, with appropriate modifications to refer to fax as well, such as Internet Fax.
* VoIP – IPT in which the principal transmission network or networks are private, managed IP-based networks.
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