GSM数据通信和传真业务，能为移动中的用户接入数据库和主计算机提供极大的便利。利用GSM手机收发数据或传真的原理框图如图1所示。图1GSM手机收发数据或传真原理图把PC卡插入PC机内，GSM手机经专用线与PC机相连，那么PC机上的信息按照指令，就可通过手机发送出去。BTS接受信号 GSM data communications and fax services, can provide great convenience for mobile users to access the database and host computer. Use GSM mobile phone to send and receive data or fax block diagram shown in Figure 1. Figure 1 GSM mobile phone to send and receive data or fax schematic PC card inserted into the PC, GSM phones connected by a dedicated line with the PC, then the PC information in accordance with the instructions, you can send out by mobile phone. BTS accepts the signal