-12-
many years to come, and I recommend that Magneto exchanges of
suitable capacities be installed and operated until the develop-
ment warrants conversion to the Automatic system.
(32). Any other exchanges that may be required in the future
at the small outlying towns on the Island or in the New Terri-
tories should be of Magneto type. This type is preferable to
0. B. Manual in view of the extremely humid conditions.
Types of Automatic Systems.
276
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(33). There are several types of Automatic Systems on the
market. In the United States two principal systems have been
evolved viz:- the Western Electric Company's "Panel" system
which has been adopted by the American Telegraph and Telephone
Co., in recent years for very large cities, and the "Strowger"
introduced some years ago by the Automatic Electric Coy., of
Chicago. The latter system is in use in a very large number of
In Canada Exchanges both in the United States and in Canada.
the same type of "Strowger" plant is also made by the Northern Electric Coy. of Montreal and a number of exchanges of this
firm's make have been installed. Owing to the very large demend for Automatic equipment in America it is understood that no plant of either of these types will be available for
export abroad for some time to come.
(54).
In England the "Strowger" system, with various minor differences in constructional detail, is mede by three firms viz:- the Automatic Telephone Manufacturing Coy., Liverpool, Siemens Bros. & Coy., Woolwich, and the Peel-Conner Telephone Works Coventry. A180, another system which is operated en- tirely by means of relays, but which so far has only been adopted on small exchanges, is made by the Relay Automatic Telephone Coy., London.
(35). At Antwerp the Western Electric Coy's machine-driven "Rotary" system is made by the Bell Telephone Manufacturing Coy, and at Stockholm
the Ericsson machine-driven system is made
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