I'm using a GSM phone on 9600 b/s which is sufficient
for mail etc. At least in Europe you have access to
the internet everywhere without any hassle to login
or logout to GSM networks. All GSM operators offers
a port to the internet, an expensive one, of cause.

But you may connect to regular ISPs as well, the GSM
network converts the link into an analogue 9600 b/s
connection to any analogue fixed net phone.

The phone I'm using is one from my company with IR
interface. But you need to have a special software
to connect to phone by IR or by wire. For IR there
is no need for a modem, and the wire connection
requires an electrical converter to match the levels
of the phone. Last one is included within the
software package.

Regards
Helmut
'80 Vanagaudi