Title :
The 81-a exchange trunk carrier system ¿ Repeaters and regulation
Author :
Gilmore, E. A. ; Griffith, C. G.
Author_Institution :
Lenkurt Electric Company, Inc., San Carlos, Calif.
Abstract :
A block diagram of the 81-A 24-channel exchange carrier system shown in Fig. 1 indicates the basic system parameters. It is designed for a maximum length of 15 miles and powered by the 48-volt office battery. The frequency allocation is shown in Fig. 2.
Keywords :
Equalizers; Regulators; Repeaters; Surge protection; Surges; Thermistors; Transistors;
Journal_Title :
American Institute of Electrical Engineers, Part I: Communication and Electronics, Transactions of the
DOI :
10.1109/TCE.1962.6373165
