Metallic channel unit network

Details Metallic channel unit network Metallic channel unit network

1993-03-22

1995-10-10

Dwyer, James L.

Telephonic communications

Subscriber line or transmission line interface

379413, 379344, 379345, H04M 1900

Patent

active

054577438

ABSTRACT:
A channel unit network for interconnecting a two-wire, bidirectional signal transmitting means with a four-wire digital transmitting means in a communication system to create a precision bidirectional simulated two-wire cable pair over a transmission medium includes tip and ring switch mode drivers, a signal processing circuit, a decoupling circuit, and tip and ring balance amplifiers. The decoupling circuit is used for splitting off "voice band" frequency signals from incoming tip and ring "DC band" signals from the two-wire means. The signal processing circuit performs both analog-to-digital conversions and digital-to-analog conversions.

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