Do you mean GM863?
I haven't done any FTP with a Telit module, but I have used GPRS.
To see what goes on when the microcontroller is talking to the Telit module, I connect the Tx and Rx lines to diodes and a pull up resistor, and to a MAX232. The output of the MAX232 is connected to a PC, running a terminal emulator which logs the data. Hyperterminal might well work for that.
The Telit module has local echo by default, but that stops as soon as the GPRS connection is open. That is why the diodes are needed, to monitor both the transmit and recieve.
I use the PC monitoring of the Tx ans Rx all the time to see if the microcontroller is doing what I want it to do, and if the Telit module is doing what I think it should be.
I would be interested to know how you do FTP through a Telit module.