1.Download
http://www.draisberghof.de/usb_modeswitch/
cd /tmp
wget http://www.draisberghof.de/usb_modeswitch/usb-modeswitch-1.1.1.tar.bz2
2.Install
cd usb-modeswitch-1.1.1
sudo make install
sudo vi /etc/usb_modeswitch.conf
>>
########################################################
# Huawei E1550
# Huawei E1750
#
# Contributor: Anders Blomdell, Ahmed Soliman
DefaultVendor= 0x12d1
DefaultProduct= 0x1446
TargetVendor= 0x12d1
TargetProduct= 0x1001
# only for reference and 0.x versions
# MessageEndpoint=0x01
MessageContent="55534243123456780000000000000011060000000000000000000000000000"
sudo /usr/sbin/usb_modeswitch -W -c /etc/usb_modeswitch.conf
$ ls -l /dev/ttyUSB0
crw-rw---- 1 root uucp 188, 0 3月 19 16:13 /dev/ttyUSB0
3.Setup kppp
New account :WCDMA
Phone no:*99#
authentication ： PAP
Call back : No
pppd parameters:
noauth
usepeerdns
noipdefault
defaultroute
MODEM:DEVICE
new HUAWEI E1750
Device: /dev/ttyUSB0
Flow control: Hardware [CRTSCTS]
Line end : CR
Speed : 460800
Use file lock : yes
MODEM:MODEM
Query modem
4.How to use it:
plug in the usb modem
sudo /usr/sbin/usb_modeswitch -W -c /etc/usb_modeswitch.conf\
$ ls -l /dev/ttyUSB0
crw-rw---- 1 root uucp 188, 0 3月 19 16:13 /dev/ttyUSB0
sudo kppp
connect
