I bought the FXT009 to send and receive SMS textmessages from my C# application.
To do this I downloaded the GSMComm library.
I installed the modem and driver + ran the GSMComm demo program.
I can connect to the modem (Com3) and all features work EXCEPT sending SMS-messages…
It throws the following error:
Error: The phone reports an unspecified error. This typically happens when a command is not supported by the device, a command is not valid for the current state or if a parameter is incorrect. (GsmComm.GsmCommunication.CommException)
Anybody any ideas?