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Excerpt from The Practical Telephone Handbook and Guide to the Telephonic Exchange IN the following book the writer has endeavoured to produce a manual of moderate size and cost, but thoroughly practical, and detailing, as far as space would allow, the most recent methods of telephonic working. Whilst the requirements of telephone employ have been constantly kept in view, it is fully intended, also, that the book shall be of service as a source of information on telephonic matters to users of the telephone and to the public generally. The text is supplemented by a large number of illustrations. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.