First of all, are you familiar with IP networking independent of GPRS and Open-AT?
If not, you should build that foundation first; eg,
forum.sierrawireless.com/viewtop … ial#p18892
The SIM is your key to accessing network services - it is what identifies you as a valid customer to the network.
This includes identifying what services you are entitled to use.
Some networks require you to specifically request certain services, others might allow them by default.
It will also depend on what particular “deal” you have paid for.
Thus, there is no general answer to your question.
Your best bet is to speak to your Distributor - they will be able to advise you on what’s available locally.
See: forum.sierrawireless.com/viewtop … cket+level
Again, you will need to be familiar with the principles involved.
Then, You will need access to an appropriate server:
For mail, you need a mail server;
For FTP, you need an FTP server;
For HTTP, you need an HTTP server.
For “raw” socket stuff, I’ve used & recommend these:
simplecomtools.com/productca … category=5
simplecomtools.com/productca … category=5
I think it’d be easier to just GET a simple web page…
I’d recommend this HTTP tutorial:
jmarshall.com/easy/http/