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 130
group. Since eachsection has ten outgoing trunks, the group has 100 trunks. There areten sections of first selectors (lettered A to J) in each bay. Since thereare ten selectors in a section, the bay has 100 first selectors. The distribution provides ten trunks from each secondary lineswitchgroup… … Fig. 95.—Secondary lineswitches installed. to bay No. 2, etc. Within the section of lineswitches the ten trunks aredistributed to all the selector sections in the given bay. Thus the firsttrunk goes to a selector in section A, the second trunk to a selector insection B, etc. The above method…
Telephone
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