Design & Implementation Of CQT Testing System Based On GSM Network

After years of development. GSM (Global System for Mobile Communications) networks are rather ripe now. In current stage, to different GSM operation companies, formulating a set of scientific estimation system and optimizing the mobile communication networks is one of the most important tasks. In this paper, a CQT (Call Quality Test) estimation system is adopted, a CQT Dialing and Testing System based on GSM is designed and completed. This system can show the performance of the network, discover the problems, provide accurate data for further network optimization and solve the problems caused by manual dialing and testing.In this design. TMS320LF2407 DSP and TC35 GSM module are adopted. This system can simulate multi-channel calling and called subscribers, complete the calling test. The operation platform is Windows NT Chinese version. The software is very convenient to use. Moreover, this system can be easily expanded to be a test system based on CDMA, the third generation of mobile communications. Thus, we can say that this system has a brighter application future.In this paper, the main works are followed: La CQT dialing and testing system has been developed; 2.by using two MOXA cards, the RS-232 serial port is expanded; 3.a software of interface and control is programmed, which can accomplish the function of data collection and analysis.