ETSI EG 202 057-2 V1.3.2 (2011-04) ETSI Guide Speech and multimedia Transmission Quality (STQ); User related QoS parameter definitions and measurements; Part 2: Voice telephony,…
ETSI EN 300 392-5 V1.2.1 (2003-11) European Standard (Telecommunications series) Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 5: Peripheral Equipment Interface…