Program transmission over type n carrier telephone

WITH THE ADVENT of the type N carrier telephone system¹ about 3 years ago providing high-speed temperature-stable economical telephone circuits over the shorter cable network, it became very desirable to adapt the type N system to the transmission of both Schedule A and C programs. The flexibility of the proposed arrangements, the economics envisioned, and the increasing difficulties of meeting requirements such as high speed of propagation for the sound channel of television circuits with voice-frequency loaded cable were all factors contributing to the decision to provide program transmission over type N carrier.