一个短信发送的例子，要用到GSM MODEM才行。-An example of SMS, GSM MODEM use to do.

sms module for sms communication through com port and gsm modem

Connection with the serial port to send SMS text messages, DLL and Delphi Sample, GSM MODEM dynamic link library with documentation, the DLL has been cracked, absolutely free and does not send advertisements or additional information.