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 90
ld switching repeater is no longerused. For the purpose of simplicity as well as of clearness, we will usethe term switching repeater in describing the present form of appa-ratus, which is primarily a repeater which acts as a selector under partof the conditions of use and switches the inter-office… … H04JMS2UI1 RlDLUUd LUOJJ
Telephone
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