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 340
eding common battery for talking, etc. The banks of the toll selectors are connected to the jacks of tollconnectors, one or more in each 100-line board. These toll connectorshave their banks multipled to the banks of the local connectors, so thatall subscriber lines can be reached. When a… … Fig. 269.—Radial system of exchanges. B. He then dials the call number of the desired telephone, which operatesthe toll selector at B and the toll connector in the 100-line board chosen. Radial or Satellite Exchange System.—The radial or satellite systemof exchanges consists of a central exchange…
Telephone
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
