Voice Over Internet protocol (Major)

Introduction
This s/w is designed to provide support for voice communications using Internet protocol over internet at low cost with high quality of service. This is called VOIP. The feasibility of carrying voice and call signaling messages over Internet has already been demonstrated but delivering high quality commercial products and establishing public services has just begin. VOIP can be defined as the ability to make telephone calls over the IP-based data n/ws with a suitable Qos at low cost. Voice communications will certainly remain a basic form of interaction for all of us. The PSTN simply can not be replaced in a short period. The immediate Goal of VOIP service providers is to reproduce existing telephone capabilities at low cost and to offer a technically competitive alternative to the PSTN.

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