GPRS modem problem

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rovis999

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#22419 27-May-2008 22:37

Hello! I have a Wavecom Fastrack M1206B GSM/GPRS modem that I want to use for sending some data from a measurement device to a server. I have tried in vain to establish a connection using the instructions in the manual, but no luck. But if I configure it as a dial-up connection, it works, so no problem with the modem. But, when using HyperTerminal, I get the NO CARRIER respones when I try to execute ATD*99***1#, after a couple of lines of gibberish. Also, what puzzles me, is what AT commands, if any, should I use to enter the user, password, DNS supplied by my mobile operator. And my second problem, assuming I am somehow able to connect to the internet, is how do I send data to a server? Do I have to open a socket?

freitasm

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#133726 28-May-2008 08:37

Once you are connect this will be just another Internet connection - open sockets do your stuff, open listening ports, whatever you need and would do with a normal connection.

Have you tried the AT CGDCONT command before the ATDT, to provide the correct APN and context?

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rovis999

2 posts

Wannabe Geek

#133923 28-May-2008 18:20

Thank you for your quick reply. I've realized that the modem we were using didn't have a TCP/IP stack. So, first, I'll see if it can be enabled or if I should get another modem. I'll keep posting if I run into other problems.