gsm方面的通信协议，比较全面，本人认为很有阅读价值-gsm aspects of communication protocols, a more comprehensive, I think there is a great value of reading

3gp中的gsm的amr编解码C语言源码和协议-The gsm of amr 3gp codec C language source code and protocols

The low­ level speech compression algorithm of the GSM suite is called GSM 06.10 RPE­ LTP (Regular­ Pulse Excitation Long­ Term Predictor). My colleague Dr. Carsten Bormann and I have implemented a GSM 06.10 RPE­ LTP coder and dec

GSM Security and the protocols involves in a mobile environme()