This ETSI TETRA codec.It enable Intercommunication between TETRA and other 3G networks without transcoding, and to provide enhanced voice quality for TETRA by using the latest low bit rate voice codec technology.

3 complete versions of EVRC codec (version A, B C) with Microsoft Visual 2008 *sln -3 complete versions of EVRC codec (version A, B C) with Microsoft Visual 2008*sln

串口调试助手和V2.2-编译通过 亲测，可用于学习vc++串口通信-serial port v2.2 useful for serial codec