Automatic telephony; a comprehensive treatise on automatic and semi-automatic systems (1921)
Smith, Arthur Bessey, b. 1875, Campbell, Wilson Lee · New York : McGraw-Hill · leaf 393
-pecially where district stations are used. A test-distributer switchinstalled at a district station may start or stop the charging of the districtstation storage battery. These switches are also used for supervising alarm circuits, etc. Thetest-distributer trunk, test-distributer switch and… … POWER PLANT, SUPERVISORY AND TESTING EQUIPMENT 369 The wire chief prepares to use a certain test distributer by operatingthe associated test-distributer key; he then operates the test-distrib-uter switch by making two turns of the calling-do vice dial associatedwith his test circuits, thus placing…
Telephone
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