proceed-to-transmit signal

proceed-to-transmit signal

[prə′sēd tə tranz′mit ‚sig·nəl]

(communications)

Signal returned from a distant manual switchboard over the backward signaling path, in response to a calling signal, to indicate that the teleprinter of the distant operator is connected to the circuit.

McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.