I set up an FTP file transfer like this:
After the ‘wipfile’ command, I get
[contents of file]
Now, here is the strange thing. I have configured ‘AT+WIND=32767’ and after the ‘OK’ response that follows the file transfer, I get the following unsolicited responses:
It looks like the processor got reset. Why and how? Sometimes this happens before the transfer is complete. In fact, if the file is over 256 bytes, it is guranteed to be incompletely received, ending in hte modem being reset.
If the transfer direction is outbound, the transfer appears to be normal—I can send multiple blocks of data, then an [ETX], and the file is actually transferred—but the modem resets immediately afterwards.