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sending data to remote server over gprs

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kunal123

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hi everyone,
i succesfully configure gprs setting in sim300 using at command on hyperterminal, & module give me desired responce, but when i give command to module to start tcp connection & connect to server address, module give me error, can anyone give me solution for that

thanks
 

which AT commands work and which give errors
are you sure the remote TCP server is running and the firewall etc is set up?
 

AT commands for sim300 gprs connection
<<AT
>>OK

<<AT+CGDCONT=1,"IP","airtelgprs"
>>OK

<<AT+CGDCONT?
>>+CGDCONT: 1,"IP","airtelgprs"," ",0,0
OK

<<AT+CSTT="airtelgprs"
>>OK

<<AT+CGATT=1
>>OK

<<AT+CIICR?
>>OK

<<AT+CIFSR?
>>OK

<<AT+CIPSTATUS
>>OK
STATE: IP START

<<AT+CIPHEAD=1
>>OK

<<AT+CDNSORIP?
>>OK

<<AT+CIPSTART="tcp","www.google.com","80"
>>ERROR
 

should the TCP be in capitals?
AT+CIPSTART="TCP","www.google.com","80"
 

what does at+csq report?
can you send a GSM text message OK?
 

<<at+csq
>>+CSQ 13, 0

able to send a GSM text message
 

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