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Line-scanning processes in a magnetic-drum-controlled electronic telephone exchange

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2 Author(s)

In an electronic telephone exchange shortly to be installed at Highgate Wood, and using the time-division-multiplex principle, a magnetic drum is used to generate cyclic waveforms which are used to control the testing of subscribers' lines and also the transmission of informationbetween the drum store and other sections of the exchange. The problem of non-synchronous operation and widely differing time scales between the drum and the speech multiplex are discussed.

Published in:

Proceedings of the IEE - Part B: Electronic and Communication Engineering  (Volume:107 ,  Issue: 20 )