Abstract: A new full network communication embedded protocol stack is presented and implemented on digital signal processors (DSP) TMS320C6415. The stack includes application, session layer, transmission control protocol/internet protocol (TCP/IP), point-to-point protocol (PPP), and net interface layer. The lower layer defines a physical frame to receive and transmit data and channel state indication by multichannel buffered serial port (McBSP) between the digital signal processors for channel modems. The μC/OS-II, a real time operating system (RTOS), is involved for management of multi-tasks. The compact peripheral component interconnect (cPCI) bus is high-speed path between application and session layer for data exchange .The device driver of cPCI is designed in Driver Studio on Windows 2000. The experiment result shows that the protocol stack with a refinement architecture and perspicuous hierarchy can works well on high transmission rate and low loop-back delay time. The full protocol has beer used in a wide-band communication system for telemetering.