In high-frequency (HF) radio automatic link establishment , the period between changes in the time -of-day portion of the time-varying randomization data used for encrypting transmissions. ( 188 )
PROTECTION INTERVAL (PI)
Meaning of PROTECTION INTERVAL (PI) in English
Telecommunication standard terms English vocab. Английский словарь стандартных телекоммуникационных терминов. 2012