Application of pulse-code modulation to speech transmission in civil networks
R.O. Carter · Electronics and Power · 1964
Pulse-code modulation is attractive on account of the inherent stability, of itstransmission characteristics, its resistance to the effects of crosstalk and noise,and the comparative ease with which high-speed data facilities can be provided.The author outlines the principles of the system and describes a practicalinstallation now working in the United States.