TY - RPRT TI - Mission critical voice quality of experience access time measurement methods AU - Pieper, Jaden AU - Frey, Jesse AU - Greene, Chelsea AU - Soetan, Zainab AU - Thompson, Tim AU - Bradshaw, Donald AU - Voran, Stephen PY - 2019 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST IR 8275 DO - 10.6028/NIST.IR.8275 ER -