ZylGSM

ZylGSM: A complex Delphi and C++ Builder component you can use to configure a GSM communication system

ZyGSM is an advanced Delphi and C++ Builder component that’s capable of communicating with GSM modems, as well as phones equipped with modems.

You can use it to configure complex GSM communication systems. The component enables you to use numerous useful functions such as delete SMS, answer incoming calls, find sending SMS, dial in voice and data modes, call recognition, GSM modem detection, caller identification as well as execute custom AT commands.

On top of that, ZyGSM can read text and PDU SMS messages, but also supports GSM 7-bit alphabet, concatenated SMS and UCS2.

The component requires AT (Hayes)-compliant GSM modems connected to the serial ports in order to work. However, it also supports USB, Bluetooth and IrDA devices.