TY - RPRT TI - Test scenarios for mission critical push-to-talk (MCPTT) off-network mode protocols implementation AU - Varin, Priam AU - Sun, Yishen AU - Garey, Wesley PY - 2018 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST IR 8236 DO - 10.6028/NIST.IR.8236 ER -