Abstract :
The problems encountered in telephone transmission from delay distortion, crosstalk, noise, signal simulation, etc., take on greater meaning when applied to a high-frequency switching system. The difficulties in operating 2-wire low-frequency circuits into a high-level 4-wire data network are also discussed. These problems are overcome by a variety of methods, which are described. Although the techniques employed are not basically new, their application in a broadband system is essentially unique.
