Patent ID: 7280593

Claim:
A method of synchronizing a reconstruction of analog modem signals at a remote bridging device, comprising the steps of: receiving, at a first bridging device, a first analog signal; generating, at said first bridging device, by a first analog-to-digital converter, a first digital data signal from said first analog signal, wherein: said first analog-to-digital converter is synchronized by a first sample clock signal; and, said first digital data signal comprises a first sample synchronization signal and first digital information bits, said first sample synchronization signal comprising a digital marker representing sample timing information; transmitting, from said first bridging device, said first digital data signal; receiving, at a second bridging device, said first digital data signal from said first bridging device via a transmission medium: detecting said first sample synchronization signal by said second bridging device; generating, at said second bridging device, a first reconstruction clock signal based on said first sample synchronization signal; converting, at said second bridging device, by a second digital-to-analog converter, said first digital data signal to a reconstruction of said first analog signal, wherein said second digital-to-analog converter is synchronized by said first reconstruction clock signal; receiving, at said second bridging device, a second analog signal; converting, at said second bridging device, by a second analog-to-digital converter, said second analog signal to a second digital data signal, wherein said second analog-to-digital converter is synchronized by said first reconstruction clock signal; transmitting, from said second bridging device, said second digital data signal via said transmission medium; receiving, at said first bridging device, said second digital data signal; and, converting, at said first bridging device, by a first digital-to-analog converter, said first digital data signal to a reconstruction of said second analog signal, wherein said first digital-to-analog converter is synchronized by said first sample clock signal.