This is definitely the way to go!
But after irattach I need to modprobe ircomm, ircomm_tty and irtty_sir as well before run gnome-ppp.
Preferably would be to get these loaded by udev as well. And possibly pop up Ircp Tray.
And then use Network Manager (instead of gnome-ppp) to manually create a ppp over my GSM.
Any ideas how to get this done?
I have the same USB dongle.