mehdi952
Newbie level 3

Hi to all
I bought a SIM900 with developing board.
all Basic commands such as ATE , ATZ , AT&F , AT&V are working and return OK in HyperTerminal window
, but Extended commands for example AT+CMGF=1 doesnt work and return ERORR
pls help me
I bought a SIM900 with developing board.
all Basic commands such as ATE , ATZ , AT&F , AT&V are working and return OK in HyperTerminal window
, but Extended commands for example AT+CMGF=1 doesnt work and return ERORR
pls help me