A set of signal elements that is used to transmit or represent a function- control character that actuates a control function, such as carriage return, line- feed , letters shift, or figures shift, that is to be performed by communications devices, such as teletypewriters and teleprinters. [ From Weik '89 ]
FUNCTION SIGNAL
Meaning of FUNCTION SIGNAL in English
Telecommunication standard terms English vocab. Английский словарь стандартных телекоммуникационных терминов. 2012