New GPRS module for Arduino

Hi, unfaithfully I haven't solve my problem, now I'm getting something but it's not enough, after the connect message I can just send one char then the ktc notify appears and I have to set my at commands again, I know that the char is send because I'm listening the socket on a server
and I don´t know why just one char is sent.

I'm using AC-DC power supply with a 220uF capacitor, and I don´t know we I only sending one char? any ideas?

Cheers