Publisher's Synopsis
Excerpt from Telephony, Vol. 5 of 6: A Manual of the Design, Construction, and Operation of Telephone Exchanges; The Substation
It now proposed to examine what appears to be the best current practice in the construction of sub-stations, and the lines along which development. Seems likely to take place. The history of the telephone and the theory of the interconvertibility of sound and electricity will only be touched upon collaterally in so far as it may be wise to the development of the subject.
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