What is VoIP?

'VoIP' is the acronym for ‘Voice over Internet Protocol’. In plain English, this simply means a phone call conducted over the internet through a microphone and speaker or headset.  This can be revolutionary for those who often engage in what can be prohibitively expensive overseas calls – VoIP services such as Skype are usually free to other VoIP users, the only cost being the amount you already pay to access the internet.