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National Telephone Network Transmission Planning in the American Telephone and Telegraph Company

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2 Author(s)
F. Andrews ; Bell Telephone Labs., Holmdel, N. J. ; R. Hatch

The transmission plan associated with the toll switching plan used by the American Telephone and Telegraph Company has evolved and will continue to change to take advantage of new technology in providing better transmission quality and new service capabilities. This paper describes the present network plan and quality controls that are applied. An indication is given of future trends that will affect transmission planning.

Published in:

IEEE Transactions on Communication Technology  (Volume:19 ,  Issue: 3 )