读取GSM短信内容，解析出SMS的文本格式。适用于GSM7标准，可移植适用于不同的gsm猫，在TC35调试通过。-read GSM SMS content, analytic out SMS text format. GSM7 standards apply to be transplanted applicable in different gsm cats in TC35 debugging through.

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