Title :
Carrier Current Pulsing over Toll Telephone Circuits
Author_Institution :
Automatic Electric Co., Chicago, Ill.
fDate :
7/1/1949 12:00:00 AM
Abstract :
Recently developed multichannel carrier telephone systems, where calls are extended through automatic switching equipment, are described, together with performance data and application in commercial telephone service. Connections are established and dial pulses extended, utilizing the carriers associated with the various voice transmission channels.
Keywords :
Frequency; Intelligent networks; Pipelines; Senior members; Speech; Spine; Switching circuits; Telephony; Wire; Writing;
Journal_Title :
Proceedings of the IRE
DOI :
10.1109/JRPROC.1949.234617
