Adding a full-featured SMS functionality to your own product can be a tough job. Of course, you can always send direct queries to some Web-to-SMS gateway, but they do not always work properly, or don’t support certain options you may need.

GylGSM is a Delphi & C++Builder component that communicates with a GSM modem or phone with integrated modem (almost all new generation mobile phones).

Main features:
- send SMS in text mode
- send SMS in PDU mode
- delete SMS
- dial in voice mode
- dial in data mode
- answer incoming call
- hang up current conversation
- recognize calls and identify caller number
- new SMS message alert
- read PDU and text SMS (the message text must be in GSM 7-bit charset, multipart (concatenated) SMS and Unicode SMS are not yet supported)

- detect GSM modem
- execute custom AT commands