用了sim900a模块想发数据出去到服务器为什么怎么都不行啊

2019-08-13 23:05发布

AT

OK
AT+CSQ

+CSQ: 10,0

OK
AT+COPS?

+COPS: 0,0,"CHN-UNICOM"

OK
AT+CGCLASS="B"

OK
AT+CGDCONT=1,"IP","CMNET"

OK
AT+CGATT=1

OK
AT+CIPCSGP=1,"CMNET"

OK
AT+CLPORT="TCP","11"

OK
AT+CIPSTART="TCP","192.168.1.109","11"

OK

STATE: TCP CLOSED

CONNECT FAIL

上面是我发的指令，哪里有问题啊，是不是我服务器没设置对，求教

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