VoIP

Overview of Voice-over-IP

1. Introduction:
The term “Voice-over-IP” is one of the buzzwords of today’s IT industry and as well as of Telecommunication industry. The reason for its popularity can be viewed as its lucrative market potential and its versatility of application. The applications of VoIP ranges from personal phone-to-phone, PC-to-phone, PC-to-PC calls to corporate applications like Call Center, toll free numbers and many others. In this paper we will be defining VoIP, look at the causes for its evolution, and see how it actually works, i.e. analyzing the nuts and bolts of VoIP.

2. What is VoIP?
Voice-over-IP (VoIP) implementations enable users to carry voice traffic (for example, telephone calls and faxes) over an IP network. [VoIP 2003] Because of its superior cost/benefit, VoIP provides a competitive threat to providers of traditional telephone services. But in terms of quality of service (QoS), VoIP cannot yet be the substitute to the traditional telephone s...