GPRS Shield AT Error "Operation Not Allowed"

Products & Technology Shields
#1

Hello,

I’m trying to send some data through GET to a php page. I typed the following commands through serial:

[code]
AT+CSQ

AT+CGATT?

AT+SAPBR=3,1,“CONTYPE”,“GPRS”

AT+SAPBR=3,1,“APN”,“internet”

AT+SAPBR=1,1

AT+HTTPINIT

AT+HTTPPARA=“URL”,“www.my_URL.com/stuff.php?variable=TEST”

AT+HTTPACTION=0

AT+HTTPREAD[/code]

I’ve manadeg to get it right some times, but afterwards, it started gettin stuck on “AT+SAPBR=1,1”, returning “CME ERROR: 3 Operation not allowed”.

I found some people with this problem on the SIM900 module, but no slutions. Any ideas would be much appreciated! :slight_smile:

Thanks.

#2

I am not sure with this bug, but I advice to run AT+CSTT / AT+CIICR/ AT+CIFSR command firstly, then run AT+SAPBR=1,1.