Digital switching for pabx telephone communication systems

Details Digital switching for pabx telephone communication systems Digital switching for pabx telephone communication systems

H - Electricity

04

Q

344/29

H04Q 3/54 (2006.01)

Patent

CA 1064600

DIGITAL SWITCHING FOR PABX TELEPHONE COMMUNICATION SYSTEMS ABSTRACT OF THE DISCLOSURE Disclosed is a method and apparatus for digitally switching audio signals in a telephone communication system having a plurality of telephone stations with their voice communication channels selectively coupled by way of analog to digital and digital to analog converters through a switch matrix controlled from the output of a stored program controlled computer. The analog audio signals to be inputted to the digital switch matrix are converted to pulse width modulated digital signals, the digitized audio signals outputted from the matrix being reconverted to analog audio signals.

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