1. In telephony , an audible or visual signal that indicates that no transmission path to the called number is available. Synonym busy tone. 2 . In telephony, an audible or visual signal that indicates that the called number is occupied or otherwise unavailable. ( 188 ) Synonym reorder tone.
BUSY SIGNAL
Meaning of BUSY SIGNAL in English
Telecommunication standard terms English vocab. Английский словарь стандартных телекоммуникационных терминов. 2012