NEED HELP IN GPRS MODEM DATA TRANSMISSION

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rahulsushruth08

Joined: 02 Mar 2009
Posts: 1
Location: A'bad

02 Mar 2009 13:57 gprs data transmission

Hello Friends,
Do someone help me to khow about gprs message transmission.I just need my wavecomm modem to be activated in gprs mode using my sim card in it and send to some email address/website my message.I had tried the following steps in hyperterminal connecting gsm/gprs modem to com1.

1) AT+ CGDCONT=1,"IP","WWW","0,0,0,0",0,0
OK (reply from gprs modem)
2) AT+CGQREQ=1,1,0,0,0,31
OK
3) AT+ CGQMIN=1,1,0,0,0,31
OK
4) AT+CGATT=1
OK
5) AT+CGACT=1,1
OK
3) ATD*99***1# OR AT+CGDATA=1

After pressing enter after this command I am getting some garbage data and lastly a message" NO ACCESS".Can someone help me to solve this problem.
I need my modem to transfer data successfully.
Could someone tell me about AT commmands I need to use for it.
Thanks in advance....
Rahul sushruth

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FvM

Joined: 22 Jan 2008
Posts: 5154
Helped: 766
Location: Bochum, Germany

02 Mar 2009 22:00 data transmission gprs at commands

You are basically using the right AT commands, but you must be able to handle PPP protocol (understand the garbage data) to set up a connection. Some GSM modems have a built-in TCP/IP stack, that allows to connect to a TCP or UDP port by simple AT commands, e.g. SIM300. But I don't know regarding your Wavecom modem.