Research And Implementation Of Multi-PSTN Bluetooth Gateway System

In recent years, with the rapid development of mobile communication, it has the trend which is the gradual replacement of fixed telephone network. However, the unstable signal and more expensive charges still exist. How to converge fixed telephone network and mobile communication becomes the hotspot of research. PSTN Bluetooth Gateway is a fixed-mobile convergence technique, which provides a new direction of development for how to make the best of fixed telephone network.Firstly, bluetooth technique, bluetooth protocol stack and PSTN bluetooth Gateway are introduced and the problem of the exiting PSTN bluetooth technique is analyzed in this paper. After the system requirements is discussed, the structure of hardware and the framework of software is presented, the interactive order between bluetooth module and telephony module is designed, and the procession of system is analyzed in detail. The two key techniques—cordless telephony profile and multi-PSTN bluetooth gateway dynamic selection are studied in depth. On the basis of the discussion of cordless telephony profile, the software which includes manager module and application module is designed. After the problem of existing PSTN Bluetooth gateway, multi-PSTN Bluetooth gateway dynamic selection is prensted, the procession and the design is discussed in detailed and the performance is analyzed. The implementation of hardware and software is presented at last.