I’ve done this application in 2003. It consists of a SMS Decoder and a SMS Builder.
The SMS decoder reads SMS from the SIM card/Phone using AT Commands through the serial port, and decodes every parameter in the PDU (as specified in 3GPP 23.040), in a Ethereal/Wireshark fashion.
The second part of the application is the SMS builder. With this component it’s possible to build whatever SMS we like in a graphical form, that we can then send to the SIM card or the phone. It implements almost every option of the 3GPP 23.040 specification.
An example:
An example:
The PDU parameters presented in the application are dependent on the options chosen (SMS-DELIVER, SMS-COMMAND, …). The complete structure is in the following picture:
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