Combined use of private and commercial telephones on Louisville and Nashville; 100-line systems is installed at Radnor Yard, with similar facilities elsewhere; railroad owned system includes 12 automatic telephone exchanges, 9 manual switchboards, and long distance trunks; 2859 circuit mi are expected to be in service by end of 1955. (See also Ry Age v 138 n 15 Apr 11 1955 p 50-1, 60)
Private telephone system pays
Ry Signaling Communications
Railway Signaling and Communications ; 48 , n 5
1955
3 pages
Aufsatz (Zeitschrift)
Englisch
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