Title :
Switchboards and signaling facilities of the teletypewriter exchange system
Author :
Knowlton, A.D. ; Singer, F.J. ; Locke, G.A.
Author_Institution :
Bell Tel. Labs., Inc., New York, N. Y.
Abstract :
The development of a nationwide teletypewriter transmission system in the United States required the design of switchboards and signaling facilities adapted to this special service. The 2 types of switchboard now in use are described in this paper, and the operation of the circuit by means of which connections are established between the various subscribers and supervised by the operators is explained.
Journal_Title :
Electrical Engineering
DOI :
10.1109/EE.1936.6540296
