It is easy to mix the terms VoIP and IP telephony or think that there are different words for the same thing. But, is it really so? No, VoIP and IP telephony are not the same. In simple terms, VoIP is a part of IP telephony. IP stands for Internet Protocol and VoIP stands for Voice over Internet Protocol. IP telephony refers to the digital side of telecommunications, voice communication is then made via VoIP. Your voice is thus passed over the internet and the protocol defines how your voice will then move over a network. One can think of IP telephony as an overall concept and VoIP is in turn a digital means of transport for bringing the telephone call. An IP telephony system can be, for example, an IP PBX that has VoIP. The difference is quite subtle and it is not surprising that it is sometimes mixed together.