Title :
Historical perspectives on the US telephone loop
Author :
Hawley, George T.
Author_Institution :
DSC Commun. Corp., Petaluma, CA, USA
fDate :
3/1/1991 12:00:00 AM
Abstract :
Past activities that have produced the telephone loop design prevailing in most parts of the world today are reviewed. The discussion covers the technology on which the early subscriber loops were based, the introduction of electronics, the structure of the loop, central office power systems, and loop testing.<>
Keywords :
history; subscriber loops; USA; central office power systems; electronics; history; loop testing; subscriber loops; telephone loop design; Batteries; Cables; Central office; Copper; Crosstalk; Electrons; Helium; Investments; Telephony; Wire;
Journal_Title :
Communications Magazine, IEEE
