In the establishment of a connection or the placement of a call , the time from the receipt by the call originator of a proceed-to-select signal ( dial tone ), until all the selection signals have been transmitted ( dialing has been completed).
CALL SELECTION TIME
Meaning of CALL SELECTION TIME in English
Telecommunication standard terms English vocab. Английский словарь стандартных телекоммуникационных терминов. 2012