Solutions VoIP PitfallsAs with all evolving software and telecommunications technologies, VoIP systems have their pitfalls. This article identifies the most commonly cited drawbacks of VoIP information systems. More ...VoIP HistoryContrary to popular opinion and some vendor claims, Voice over Internet Protocol transmission started in 1973 as a result of the experimental Network Voice Protocol invented for the ARPANET. However, not until 1995 did the first Internet Phone Software – Vocaltec – appear. More ...
 Market Leaders Skype and Vonage have emerged and introduced disruptive technologies. Cisco, Avaya and Nortel have introduced major market strategies to leverage their IP telephony into VoIP services. Other peer to peer groups beyond Skype, such as FlyFone, also challenge the normal and the traditional telephone companies with impressive new technology solutions.
VoIP Glossary

POTS - Plain Old Telephone Systems allowed local area calling, but was only available to the elite, since there was a huge cost involved, considering the equipment and line placement. The POTS network grew, as did its popularity and necessity (for individuals and corporations alike).