How Much Do You Know About The Voice Over Internet Protocol (VoIP)?Do You Know Everything About The IP Telephony ?Pros and Cons of IP Telephony or Voice Over Internet Protocol (VoIP)What is meant by Internet Protocol Telephony?What do you understand by the term IP Telephony? What Is Voice Over IP And How It Works ? VoIP is a technique for turning analogue audio signals into digital data that can be transferred over the internet.VoIP has the ability to completely revolutionise the way the worlds phone systems works.Voice over IP telephony as it is known, can be a viable and cost effective option to the Plain Old Telephone System (POTS).