北斗短报文与固定电话语音 通讯服务系统设计

北斗三号系统已于2018年12月完成建设，并开始提供全球服务，北斗短报文应用也即将覆盖全球。由于一些特殊环境并没有北斗系统专用的接收机，配备接收机也很不方便，为了使通信联络正常，基于北斗一号用户机数据接口2.1协议，以STM32系列单片机为数据处理单元，重点从系统硬件、软件两部分入手，对北斗短报文与固定电话语音通讯服务系统进行了研究与设计。该系统利用北斗电话网关实现北斗短报文与固话座机或移动电话的互联互通，解决了在没有接收机的特殊环境或者不使用接收机的情况下，无法进行正常通信联络问题，以及基于北斗短报文通信的安全性、可靠性、局限性问题，同时扩展了北斗短报文的通信应用范围。

Beidou short message and fixed telephone voice Design of communication service system

Beidou No.3 system has been completed in December 2018 and started to provide global services. Beidou short message application will soon cover the world. Because there is no special receiver for Beidou System in some special environment, it is inconvenient to equip the receiver. In order to make the communication contact normal, based on the data interface 2.1 protocol of Beidou No.1 user machine, the paper studies the short message and fixed telephone voice communication service system of Beidou with STM32 Series MCU as the data processing unit, focusing on the two parts of system hardware and software And design. This system uses Beidou telephone gateway to realize the interconnection between Beidou short message and fixed line telephone or mobile phone. It solves the problem that the normal communication can not be carried out without the special environment of receiver or without using the receiver, as well as the problem of safety, reliability and limitation based on Beidou short message communication. At the same time, it expands the communication application scope of Beidou short message Wai.