TreoProc 2.1
(Edit)A Palm Treo 650 GSM Call Processor.
TreoProc sends out a simple text message for ignored (receiver terminates without accepting the call) or missed (caller terminates or the ringing times out) voice calls.
TreoProc also has functionality to detect a SIM change in your Treo and send out an SMS to a predefined number with the replaced SIM details. It then locks the Treo and makes it inoperable.