[Gllug] Modem emulator

[Robert McKay]

On Mon, May 10, 2010 at 1:06 PM, Matthew King <matthew.king at monnsta.net>wrote:

> The scenario:
>
[snip]

>
> While out, the house's connection to the internet breaks for whatever
> reason. Hoping it isn't the router itself, I pull out my mobile phone,
> dial my modem's number and ... hear screeching because I don't have a
> modem on this end.
>
> Is there software available which can use the mobile network to send
> modem traffic? Is the codec even capable of it?
>
>
GSM sends the serial data over the mobile network and the telco has
something like a modem bank that turns it back into screeching before
routing it over the PSTN. Yes it's still supported. Yes you can make calls
to arbitrary numbers - landline and other mobiles. It's limited to 9600bps.
It's usually just a case of doing ATD<number> instead of ATD*99# to get
GPRS/3g.

You may be able to do what you want by installing minicom (or some other
terminal emulator) on a root'ed android handset.. surprisingly after a bit
of googling I haven't found anyone who's done this on android which is
probably because noone does this sort of thing these days...

Maybe you'd have better luck with older smartphones such as the nokia
communicator;

http://www.soft32.com/download_165747.html

It might make more sense to do it the other way round and install a PAYG 3g
internet stick on your server. You can also get static IP sim cards from
specialist providers like these guys;

http://www.scancom.co.uk/section.php/1284/1/fixed_ip_sims___data_sims

but probably not cost effectively. Three (three.co.uk) offers public dynamic
IPs which when combined with dynamic dns could also work fine, or you could
setup a vpn to somewhere.

That way you can just ssh in from anywhere including your mobile phone using
a regular ssh client and at faster speeds even when your main internet
connection is down.

Rob.
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