The Design And Implement Of Stream Media Transport Control System Based On Internet

This paper designs stream media transmission control system (TCS) of internet and corresponding intelligent terminal based on H.323 system of constructing gatekeeper. TCS can be used as the basic software system for WWW and telecommunication value-added service dealer, furthermore it can also regard as management entity of H.323 speech classroom network. It can provide speech classroom and videophone with management and control. It has functions as follow: address resolution, access control, ID verifying, bandwidth control, safety examination, domain management, call control signalling and call management etc. In order to cooperate with TCS, intelligent terminal is developed. This system uses the EVM of dual-core TMS320VC5471. For the different core configuration, the DSP has A/D and D/A modules to implement speech signal I/O channel, real time implementation of speech coder. Meanwhile embedded operation system uClinux is transplanted into it. Terminal embedded H.323 application system, keyboard, display and so on which all are managed and controlled by uCLinux to implement communication with TCS server. At last, digital speech classroom is designed under our technology and software & hardware conditions. The whole design applies the network protocol, embedded software designing technology, multimedia technology, microprocessors technology etc. that established the hard foundation for the further research and development. The application intransplanting uClinux into ARM core is to provide the valuable experience to the TI's chips (ie. DSC2X, DM, OMAP etc. dual-core CPU).