Bell telephone magazine (1922) (14569184079)

Identifier: belltelephonemag23amerrich (find matches)
Title: Bell telephone magazine
Year: 1922 (1920s)
Authors: American Telephone and Telegraph Company American Telephone and Telegraph Company. Information Dept
Subjects: Telephone
Publisher: (New York, American Telephone and Telegraph Co., etc.)
Contributing Library: Prelinger Library
Digitizing Sponsor: Internet Archive



Text Appearing Before Image:
again on perforatedtape, thus enabling this process to berepeated. The Signal Corps plan foran Army Command and Administra-tive Network takes advantage of thislatter facility. In brief, this plan provides that so-called Signal Centers be set up invarious cities throughout the UnitedStates, connected with each other bya network of private line teletype-writer circuits. Military establish-ments or units within the area cov-ered by each Center would have 1944 ^ Review of Army and Navy Communication Facilities 17 access to It by private line teletype-writer, Twx, or commercial telegraph—depending on the character andvolume of the traffic. To visualize the process, assumefor a moment that one Army unitwants to get a message to another that its destination is reached via an-other Signal Center in a distant city.This tape is simply inserted into theautomatic transmitter connected by aprivate-line circuit with that Center,and in a few moments the messageappears at the latter point, again on
Text Appearing After Image:
U. S. ARMY SIGNAL CORPS PHOTO VVacs receiving and sending Army messages with automatic equipment in a War Department Signal Center. This photograph illustrates the relay method of handling teletypewriter messages by means of perforated tape and that both are equipped with tele-typewriters. The sending point tele-types the message to its Signal Cen-ter. There the message comes off thereceiving machine in the form ofperforated tape plus the typing itself.An attendant examines the tape, not-ing from the address on the message perforated tape. The attendant atthat point, noting its destination, in-serts it in a transmitter connected,either by direct circuit or TWX, withthe teletypewriter machine at theterminating point. Those familiar with teletypewriteroperation will quickly recognize that i8 Bell Telephone Magazine SPRING this service is not as fast as eitherprivate line teletypewriter service orTwx. The point is that, to care foradministrative communications of thetype being considered