I have an FXT009 that I’m trying to use in TCP Server mode, over GPRS.
I have all the setup working (Open GPRS Bearer, APN, username, pwd etc…)
However, when I go to actually start the GPRS bearer (AT+WIPBR=4,6,0), the modem does a reset (light goes off, comes back on for a few seconds) and all the previous setup is lost.
However, it doens’t always do this. This morning, for example, I got an hour of so operation as a TCP server.
Cycling the power doesn’t seem to make a difference (even if I leave the power off for a few minutes).
What’s puzzling is that the modem sometimes works, but mostly just resets.
The modem has been returned to distributor who upgraded the FW to R7.44 from R7.43, and reported “Could not simulate the problem” (I think he meant “repeat”, but no matter…)
I should add that the SIM and account settings work fine in a Maxon Modmax 3G (MM-6280 chipset).
Any suggestions on what to do next?