DocumentCode
1381596
Title
Plug-in units for long lines circuits
Author
Read, P. J.
Author_Institution
Northern Electric Company, Ltd., Ottawa, Ont., Canada
Volume
81
Issue
5
fYear
1962
Firstpage
326
Lastpage
329
Abstract
The extension of dialing, ringing, and supervision ranges in a voice-frequency telephone circuit is achieved by a unit which requires no local ringing generator and has self-contained power supply. Two extension circuits and the necessary power supply, which has an alarm in case of failure, are mounted on a portable plug-in unit.
Keywords
Capacitors; Central office; Circuit faults; Electric potential; Resistors; Transistors; Wiring;
fLanguage
English
Journal_Title
American Institute of Electrical Engineers, Part I: Communication and Electronics, Transactions of the
Publisher
ieee
ISSN
0097-2452
Type
jour
DOI
10.1109/TCE.1962.6373144
Filename
6373144
Link To Document