AUDIO CIRCUIT BOARD FOR A MODULAR DIGITAL VOICE PROCESSING SYSTEM

摘要

An audio circuit module or card for digital voice processing system wherein voice processing functions are run in software. The audio card includes a time division multiplexer (TDM) chip that communicates with a TDM bus, a processor connected to the TDM chip and in interface. the audio card has ports that are in communication with telephone lines through which different modes of operation are achievable.