About GPRS data transfer

Hey everyone! I'm a new guy coming here. So if any problems or
mistakes have been made please forgive me
I'm now trying to deal with a gprs wireless module TC45 by Siemens,
using AT commands. In fact I've little idea about gprs before, so it
seems somewhat difficult.
Now I'm facing a problem in data transfer. I've successfully activated
a defined PDP context through AT commands(I'm using Microsoft
HyperTerminal). And I've got a dynamic IP address. However, when I
looked into the at command handbook. I couldn't find a command to
specify the server I wanted to connect. The only command I can refer to

is "AT+cgdata="PPP",1(pdp context id)". Then the module came into data
mode and it returns me some characters but I don't know its meaning.
These characters are as follow:

at+cgdata="PPP",1
CONNECT
~}#?}!}#} }9}"}&} }*} } }'}"}(}"}%}&æ*¾}' }#}%?}%悳~~}#?}!}#}


}9}"}&} }*} }
}'}"}(}"}%}&æ*¾}' }#}%?}%悳~~}#?}!}#} }9}"}&} }*} }
}'}"}(}"}%}&æ*¾}' }#}%?}%悳


~~}#?}!}#} }9}"}&} }*} } }'}"}(}"}%}&æ*¾}' }#}%?}%悳~~}#?}!}#}

}9}"}&} }*} }


}'}"}(}"}%}&æ*¾}' }#}%?}%悳~~}#?}!}#} }9}"}&} }*} }

}'}"}(}"}%}&æ*¾}' }#}%?}%


悳~~}#?}!}#} }9}"}&} }*} } }'}"}(}"}%}&æ*¾}'

}#}%?}%悳~~}#?}!}#} }9}"}&} }*}


} }'}"}(}"}%}&æ*¾}' }#}%?}%悳~~}#?}!}#} }9}"}&} }*} }

}'}"}(}"}%}&æ*¾}' }#}%?
}%悳~~}#?}!}#} }9}"}&} }*} } }'}"}(}"}%}&æ*¾}' }#}%?}%悳~


NO CARRIER

During this period I coundn't send any commands to it. Then at last it
was disconnected from gprs network.
So I'm wondering how to set an IP address to which I want to connect.
If anyone can solve my problem I would be very grateful for your
help.
Also I would try my best to help everyone!

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› See More: About GPRS data transfer

hzdjj <[email protected]> wrote:
> is "AT+cgdata="PPP",1(pdp context id)". Then the module came into data
> mode and it returns me some characters but I don't know its meaning.
> These characters are as follow:
>
> at+cgdata="PPP",1
> CONNECT
> ~???}#?}!}#} }9}"}&} }*} } }'}"}(}"}%}&???}' }#}%?}%???~~???}#?}!}#}

I know nothing about that device or GPRS, but those characters look like a
PPP session. You need to feed that data stream into a PPP client which will
then negotiate a connection and receive an IP address. It'll then be able
to pass packets.

On Linux you'd invoke this with pppd. On Windows I'm not sure... you could
do it by creating a dialup networking connection then adding the AT commands
up to the above to either then init string or create a dialler script which
waits for suitable responses from the above before doing the "internet
connection" (running PPP).

Theo

Thanks, I think I've got some sense from your words! In fact I've
looked up into some materials which just told more or less the same
thing as you've indicated. I think I know what to do next. Again
thanks.