A signaling method in which one or more discrete frequencies correspond to each desired significant condition of a code . Note 1: The transition from one set of frequencies to the other may be a continuous or a discontinuous change in frequency or in phase . Note 2: Frequency-change signaling may be used in both supervisory signaling and data transmission . ( 188 )
FREQUENCY CHANGE SIGNALING
Meaning of FREQUENCY CHANGE SIGNALING in English
Telecommunication standard terms English vocab. Английский словарь стандартных телекоммуникационных терминов. 2012