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 129
tical sidewhere cables lead to the lineswitch board frames. From the banks ofthe lineswitches the trunks run to first selectors or to secondary line-switches. The lineswitches are mounted on the usual frames, but occupy bothsides of them. The connectors are mounted on shelves much like… … Fiu. 94.—Connector trunk shelf, power panel and bank terminals. back side (Fig. 93) carries the condensers. Five or six shelves are builtinto a frame. The battery bus bars are connected vertically. Anenlarged view of the bank terminal boards, fuses and relays is shown inFig. 94. Local Secondary…
Telephone
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