[GreenKeys] device for reshaping TTY signal

[Joe Herdler]

Hi again,
Did Teletype make a device that would be placed in a local loop, and provide a on/off signal to another loop, say for going to outside plant? So one would plug one side into the local loop with all of the accessories, then a pristine signal would be presented to another, separate loop current supply and then on out the door to the next town?
What would that device, if it existed, be called?
Thank you as always,
Joe



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