Patent ID: 6504866
Filing Date: 2003-01-07
Classification: H04L

Abstract:
A data communication system for reducing conversion distortion between locations that convert analog telephone signals to digital telephone signals according to different digital conversion standards, the data communication system comprising:a first telephone switch that receives a telephone call carrying an analog modulated data signal from a modem coupled to a caller's computer, the first switch including a converter that digitally converts the analog modulated data signal to a first digitized data signal according to a first digital conversion standard; a processor that receives the first digitized data signal, the processor being programmed to: determine whether the telephone call is directed to a location that utilizes a digital conversion standard that is different from the first digital conversion standard, and if so, to: (a) convert the first digitized data signal back to the analog modulated data signal; (b) demodulate the recovered analog modulated data signal to produce an original data signal; (c) modulate the original data signal to produce a second analog modulated data signal; (d) convert the second analog modulated data signal to a second digitized data signal according to the other digital conversion standard prior to transmission of the data signal to a receiver of the telephone call.