An Architecture for a Next Generation VoIP Transmission System

1.1 Abstract Packetized speech transmission systems implemented with Voice over IP are gaining momentum against the traditional circuit switched systems despite the fact that packet switched VoIP is two to three times less efficient then its circuit switched counter part. At the time same time it is supporting just a rather bad “toll” quality. We believe that it is time to for a new architecture developed from the scratch. An architecture that includes an Internet enabled speech codec and its transport system. This architecture manages the perceptual service quality while using the available transmission resources to its best. The transmission of speech is managed and controlled in respect to its speech quality, month-to-ear delay, bit-rate, frame-rate, and loss robustness. Beside the architecture, we describe the requirements for the Internet speech codec and its transport protocol and present the description of an interface between speech codec and transport protocol.