Date Added: Jan 2012
Conventionally packet switched networks are termed as IP networks having basic characteristics of directing the traffic over the best shortest path, where the application divides the stream into packets at the source and forwards them towards the destination. The transport of voice data as packets over IP based networks is termed as Voice over IP (VoIP). Hence, VoIP can be obtained on any network that is using IP such as the Internet, intranets and local networks in which digitized voice packets are passed over the IP networks. The VoIP networks guarantee to maintain a reliable voice communication in a broadband scenario further enhancing the best cost-benefit relationship.