STC89C52控制GSM（TC35）模块发送短信，接听/挂断电话-STC89C52 GSM (TC35) module to send text messages, answer/hang up the phone

拨打和接听电话，用单片机实现，用来做基于单片机的电话机微控系统。(Call and answer the phone, using single-chip microcomputer, used to do microcontroller based telephone micro control system.)