DIN EN 301713-2003 数字蜂窝式远程通信系统(2+相位)(GSM).自适应多速率(AMR)语音代码C测试顺序
Digital cellular telecommunications system (Phase 2+) (GSM) - Test sequences for the Adaptive Multi-Rate (AMR) speech codec (GSM 06.74 version 7.0.3 Release 1998) (Endorsement of the English version EN 301713 V 7.0.3 (2000-10) as German standard)