Modular digital dictation system with plurality of power sources and redundancy circuit which outputs service request signal in a source does not meet predetermined output level

摘要

A modular digital dictation system that can be easily modified to service a variable number of dictation stations and transcription stations. The modular digital dictation station comprises a central station for receiving digitized dictation signals from a network of dictation stations, storing the voice portion of the digitized dictation signals as digitized dictation segments, and routing the digitized dictation segments to a network of transcription stations. The central station includes a plurality of line interface and signal processing cards. The number of line interface and signal processing cards connected to the central station determines how many dictation stations and transcription stations the modular digital dictation station can service. The line interface cards may be removed from or connected to the central station during operations. A redundant power supply is connected to the central station to provide continuous power to the central station. The power supply includes multiple energy sources, each energy source capable of powering the central station.