GSM手机短消息协议，包括pdu协议，长短信协议等，开发短信猫可参考。-GSM mobile phone short message protocols, including pdu protocol, long SMS protocol, the development of SMS may refer to the cat.

手机短信收发程序，用VC开发的，基于GSM协议，包括API源代码和调用API的例程。-SMS sending and receiving process, with the VC developed, based on GSM protocols, including API source code and call the API routine.