GPRS on PDA help me

[gulm]

Hi I have a big problem I need to create a Internet or TCP connection on PDA with a GPRS modem.
I would like to use AT command I tried different commands but if I read log file I see I'm connected for differents seconds but I cannot use Internet explorer (Page not found, please connect) and I cannot create a TCP connection.
I need to send to modem GPRS command to establish connection and activate services TCP and internet for example to send a mail directly from labview.
Which is the correct sequence of commands?
I read and tested different AT command but nothing

thank you very much

elisa

[tst]

Do you want to turn on your modem and establish a connection, all from your program?
If so, I think you may have a problem.
These things are usually controlled through DLLs, but to use a DLL with LV PDA, I believe you need to have the DLL's source code, so this won't help you.
You said you're using AT commands. What kind of interface are you using to send those commands to the modem?
Do you have the documentation which came with the modem, which will probably have a list of AT commands?
Have you looked in the manufacturer's site?
If this doesn't help, write in with more details about the PDA and modem models.

[gulm]

Hi
sorry for my english
I have to work with a HP IPAQ 5440 whith GPRS module.
I read is possible to control modem from serial port (usually is COM6 for GPRS) I send different AT command and I have response (CONNECT).
From log file i read seconds of connection.
Modem turn on when is connect to PDA I think is possible to activate connection to navigate on web or transmit data whith TCP without to call directly winsock.dll but all by AT command.
I read a list ok AT command and I tried to send to serial port I don't have error but response which is expected from AT command but is not possible to start navigation ...
I contact HP Italy but they don't send any information about protocol.
best regards
elisa

[tst]

I haven't worked with a seperate cellular module so I don't know how this would work, but I understand you are successfully using the serial VIs to communicate with your modem.
If this is the case, then your problem is not with your code, but with getting the right commands. You can try looking for other sites on the internet where these commands are listed, but I think your best bet is still talking to HP and getting the command from them.
If the commands are available, I see no reason why they shouldn't give them to you.
Hope this helps. Good luck.