Installing the modem drivers in the kernel modules tree.
/usr/bin/ginstall -c -m644 --owner=0 --group=0 -b -D lt_modem.o /lib/modules/2.2.19/misc/lt_modem.o
/usr/bin/ginstall -c -m644 --owner=0 --group=0 -b -D lt_serial.o /lib/modules/2.2.19/misc/lt_serial.o
The driver is now installed - now run ./autoload if you want to enable automatic loading of the module