{"product_id":"the-telephone-system-of-the-british-post-office-a-practical-handbook-classic-reprint","title":"The Telephone System of the British Post Office: A Practical Handbook (Classic Reprint)","description":"Excerpt from The Telephone System of the British Post Office: A Practical Handbook\u003cbr\u003e\u003cbr\u003eThe primary Object Of the articles was to describe in detail the trunk system; but it was considered desirable to give some account of first principles, and accordingly the transmission of speech, transmitters, receivers, and, in fact, telephone stations generally, were brie?y described. The writer is aware that much of this has been described times without number, but his experience as a teacher leads him to believe that the inclusion of this matter will render the book useful to a larger circle of readers.\u003cbr\u003e\u003cbr\u003eThe first eight chapters may be said to be introductory to the subject of telephony generally. The permanent current systems nextly receive attention, and their various classes of switch sections. After this follow special switches, such as transfer boards, record table switch sections, etc.\u003cbr\u003e\u003cbr\u003eAbout the Publisher\u003cbr\u003e\u003cbr\u003eForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com\u003cbr\u003e\u003cbr\u003eThis 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.","brand":"Forgotten Books","offers":[{"title":"Hardback","offer_id":39296211288109,"sku":"9780331442908","price":16.13,"currency_code":"GBP","in_stock":true},{"title":"Paperback","offer_id":39794295308333,"sku":"9781331667186","price":10.28,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0262\/2357\/5085\/files\/9780331442908.jpg?v=1729166868","url":"https:\/\/www.thegreatbritishbookshop.co.uk\/products\/the-telephone-system-of-the-british-post-office-a-practical-handbook-classic-reprint","provider":"The Great British Bookshop","version":"1.0","type":"link"}