Question about ppp connection

Question about ppp connection

I would like to connect my Rasberry Pi "B" with old HP iPAQ H3970 Pocket PC 2003 device. I want to build a link between the two devices using PPP to get a PDA with an Internet access.

The PDA shows on the USB port:
$ lsusb
...
Bus 001 Device 012: ID 03f0:1016 Hewlett-Packard Jornada 548 / iPAQ HW6515 Pocket PC
...

It seems on the serial port also:
$ lsmod | grep usb
usbserial              32890  1 ipaq

I have used this script to build the connection beetween the two devices (with /dev/ttyUSB0 setting, and with 198.168.0.2:192.168.0.55 IPs):
http://math.bme.hu/~lackac/ipaq/linux-ipaq/files/PocketPC

Result of the running of the script:
$ sudo /usr/sbin/pppd call PocketPC
' OK 'AT' OK 'AT' OK 'AT' OK 'AT' OK 'AT' OK 'AT' OK 'AT' OK 'AT' OK 'ATDT' CONNECT finished (pid 22897), status = 0x3
Connect script failed

More information about the operations of the 1.1 section:
http://math.bme.hu/~lackac/ipaq/linux-ipaq/Linux-iPAQ-HOWTO-1.1.html

Any idea? :o)