DIN EN 300395-3-2005 地面中继无线电(TETRA).全速话务信道的语音编码机.第3部分:具体操作特点
Terrestrial Trunked Radio (TETRA) - Speech codec for full-rate traffic channel - Part 3: Specific operating features (Endorsement of the English version EN 300395-3 V1.2.1 (2005-01) as German standard)