Abstract:

 In order to insure the security and confidentiality of the individual wireless communication, we propose a new solution to realize intelligent communication by using GPRS(General Packet Radio Service) network. An intelligent voice communication platform is built by using AT commands set and GPRS module Under the environment of Visual Basic6.0. It can realize secret communication and fast information inquiry and searching in actual combat of policeman. This system connects the Microsoft Access Database through ADO(ActiveX Data Objects) and it can trace, query and shield the incoming call in GPRS／GSM network. We can provide referernce to the specified audio service and intelligent mobile service.

Key words: general packet radio service(GPRS), AT commands, Serial communication, Intelligent shield, especial secret telephone line