Method and device for confirming correct connection between data

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364200, 371 24, 371 30, 371 67, H04M 156, H04B 350

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042464420

ABSTRACT:
In a system of transceivers which can automatically operate either in calling or called modes, the identification codes of the calling and called transceivers are transmitted back and forth between them and compared in a manner which tends to minimize erroneous connections and to confirm only correct connections prior to starting the actual transmission of data between the transceivers.

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E. W. Anderson, "Data Transmission Facilities for Industrial Customers", Reprinted from Telephony, Data Communications, 9/21/67, p. 4.

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