Transmission design of intertoll telephone trunks

journal article
Published by Institute of Electrical and Electronics Engineers (IEEE) in Transactions of the American Institute of Electrical Engineers, Part I: Communication and Electronics

Vol. 72 (5) , 670-676
https://doi.org/10.1109/tce.1953.6371943

Abstract

FOUR papers have already discussed such features of the nation-wide toll switching plan as the fundamental plant layout, numbering plan, toll switching, and automatic accounting equipments.1¿4 The present paper is intended to round out this coverage of the plan with a further discussion of the transmission features.

Keywords

DELAY
SWITCHING CIRCUITS
STANDARDS
CROSSTALK
SWITCHES
NOISE
JOINING PROCESSES

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