Report: Speech processing application standards

The usefulness of voice store and forward products and services depends on the compatibility and interoperability of different systems. This document describes a voice store and forwarding standard that guarantees the compatibility of AT&T products. Current AT&T voice store and forward (VSF) products share common algorithms, and procedures for speech coding, silence detection, and channel compression, based on 16 kilobits per second (kb/s) sub-band speech coding applications. The AT&T VSF standard includes the following components: