DIN ETS 300581-2-2001 数字移动电话远程通信系统(阶段2).半价话务.第2部分:半价话务传输编码 (英文版本核准本 ETS 300581-2:1998-05 作为德国标准)
Digital cellular telecommunications system (Phase 2) - Half rate speech - Part 2: Half rate speech transcoding (Endorsement of the English version ETS 300581-2:1998-05 as German standard)
This document specifies the speech codec to be used for the GSM half rate channel. It also specifies the test methods to be used to verify that the codec implementation complies with the standard.