1. The delay that occurs when a call arrives at an automatic switching device and no channel or facility is immediately available to process the call. 2. The time between the instant a system receives a call attempt and the instant of initiation of ringing at the call receiver end instrument .
CALL DELAY
Meaning of CALL DELAY in English
Telecommunication standard terms English vocab. Английский словарь стандартных телекоммуникационных терминов. 2012