Abstract
The introduction of Internet protocol technology into traditional telecommunications networks is changing the nature of speech communication in those networks. As the current switched network infrastructure is augmented by packet networks, the needs of voice users of these hybrid networks must be given due consideration. These users are accustomed to high-quality connections with low distortion in the speech signal and low transmission delay in the speech path. In order for packetized networks to gain widespread acceptance for speech transmission services, it is necessary to maintain this high-quality performance in the evolving networks. We discuss relevant speech transmission performance requirements and the associated activities taking place in regional and international standards bodies.
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