Abstract: The short message platform based on SIEMENS MC75 module was designed as external extended function of the information support equipment. Connection was set up between MC75 module and the information support equipment by series port. Typical circuits were used by the module to connect SIM card and other peripherals. The short message sending mode and the process of platform working were introduced in the software description. The characteristics of short message platform were expounded in details. Sending and receiving short messages, detail settings and call connections were realized on the message platform with examples.

Key words: MC75 module, Short Message Service (SMS), Short Message Peer to Peer (SMPP), protocol data unit

摘要： 作为信息支持设备的外部扩展功能，设计了基于西门子MC75模块的短消息平台。通过串口建立信息支持设备与MC75模块的连接，模块采用典型电路连接SIM卡与其他外设。软件部分对短消息发送模式与平台工作流程进行了介绍，并对短消息平台的工作特点进行了详细阐述。最终在该设备上实现了G网短消息的设置、收发与电话通信功能。

关键词: MC75模块, 短消息服务, 短消息点对点协议, 协议数据单元