一些有关GSM语音编码的资料，对于GSM语音编码的研究有一定的参考价值-about GSM speech coder GSM Full rate，speech coder

GSM/GPRS TTL -Modem from rhydoLABZ is built with SIMCOM Make SIM900 Quad-band GSM/GPRS engine, works on frequencies 850 MHz, 900 MHz, 1800 MHz and 1900 MHz. It is very compact in size and easy to use as plug in GSM Modem. The Modem is designed wi