have you loaded the appropriate module(s)? ppp is needed in kernel to get the modem working
EDIT: do a quick module-search, unless you know you've compiled the correct ppp's in kernel...
modprobe -l | grep ppp
or, if you wish to see all available modules...
if you see there any modules, try loading them via
where (modulename) is the name of the module. these should be loaded automatically, though...but to make sure you do have them
in a stock kernel these should be compiled either into the kernel or as modules..?
if you have pppconfig, make an account with it and start the ppp through it
do the magic stuff, then
where (connectionname) is the name you gave to your connection settings in pppconfig
I use this method, as my wvdial has stopped working correctly in my newly compiled kernel...
EDIT2: if you don't have some module or something else is missing, you can see it like this: you said your pci-proc shows your modem's information. so the device is there..but what about the device file? do
and check out if anything comes up. my modem is /dev/ttyS1 (usually it's that if you have it in your COM2 -port like dos tells it). if nothing comes, it might be that the device is there, but no device file has been created due to a missing module or something other like that...missing module means usually just modprobing it, or in the worst case recompiling the kernel (that is, if you've self compiled the current kernel and forgotten ppp's as I did in the first time