Information Technologies. Telecommunications management network. Enhanced Telecom Operations Map (eTOM). Process decompositions and descriptions. Operations. Resource management and operations. eTOM level 3 processes. Process 1.1.3.5 - Resource data collection and distribution
State system for ensuring the uniformity of measurements. Acoustics. Reference zero for the calibration of audiometric equipment. Part 2. Reference equivalent threshold sound pressure levels of pure tones for insert earphones
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