About AT+QIOPEN error(EC600N)

When I send AT+QIOPEN,I got +QIOPEN:0,566.
How to resolve the error?

full AT cmd below:

AT+CPIN?
+CPIN: READY

OK
AT+CGREG?
+CGREG: 0,1

OK
AT+QICLOSE=0
OK
AT+QICSGP=1,1,“UNINET”,"","",1
OK
AT+QIDEACT=1
OK
AT+QIACT=1
OK
AT+QIACT?
+QIACT: 1,1,1,“10.137.159.69”

OK
AT+QIOPEN=1,0,“TCP”,“58.213.47.166”,5111,0,0
OK

+QIOPEN: 0,566

image
Please make sure your client to server network is smooth.

thanks,I check that the server network has problem.

Ok, you can capture the network packet for verification,Best Regards.