广和通公司生产的GSM G600模块程序，已经通过测试。实现了PDU短信与TXT短信，电话接听。主要对AT指令的应答作了大量处理，其中的处理方法可以借鉴。-Guang Tong company' s GSM G600 module program, has been tested. Achieve a PDU SMS and TXT messaging, telephone answering. Mainly on the AT command response made a lot of processing, in which the treatment can learn from.