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www.ql-dz.com
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sim300c
I want use SIM300C GPRS moduel to send&reiceive data.
now,it is normal use for SMS and call.but can't establish connection with remote server?
just like fllowling:
AT+CSQ
+CSQ: 20,0
OK
AT+CGDCONT=1,"IP","CMNET"
OK
AT+CGDCONT?
+CGDCONT: 1,"IP","CMNET","",0,0
OK
AT+CGCLASS?
+CGCLASS: "B"
OK
AT+CGATT?
+CGATT: 1
OK
AT+IPSTART="TCP","202.???.??.??","2020" //note:static IP.
OK
STATE: TCP CONNECTING
CONNECT FAIL
note:IP add is a college pc static IP add whice use Dr.COM to link internet.
I want use SIM300C GPRS moduel to send&reiceive data.
now,it is normal use for SMS and call.but can't establish connection with remote server?
just like fllowling:
AT+CSQ
+CSQ: 20,0
OK
AT+CGDCONT=1,"IP","CMNET"
OK
AT+CGDCONT?
+CGDCONT: 1,"IP","CMNET","",0,0
OK
AT+CGCLASS?
+CGCLASS: "B"
OK
AT+CGATT?
+CGATT: 1
OK
AT+IPSTART="TCP","202.???.??.??","2020" //note:static IP.
OK
STATE: TCP CONNECTING
CONNECT FAIL
note:IP add is a college pc static IP add whice use Dr.COM to link internet.