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Journal marcello_dl's Journal: Getting Sony Ericsson MD400 Wireless modem to work

First install usb-modeswitch package (debian squeeze - that is, testing at the moment - has it)
Then make sure that the udev initialization is correct:
# Sony Ericsson MD400
# This is experimental. Might switch back after some time. Please report!
# This might work too instead; subject to testing
# Vendor:Product id = 0x0fce:0xd0e1
SUBSYSTEM=="usb", SYSFS{idVendor}=="0fce", SYSFS{idProduct}=="d0e1", RUN+="/usr/sbin/usb_modeswitch --default-vendor 0x0fce --default-product 0xd0e1 -O 1"

Then plug the modem in, make sure it doesn't show up as usb disk, then install wvdial.

A working configuration for italian isp wind is the following:

[Dialer Defaults]
Init1 = ATX3
Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
Init3 = AT+CFUN=6
Init4 = AT+CGDCONT=1,"ip","internet.wind"
Phone = *99#
Modem Type = USB Modem
Baud = 460800
New PPPD = yes
Modem = /dev/ttyACM0
ISDN = 0
Password = wind
Username = wind

Line init4 must be adapted to your ISP.
It is important to have the init3 line which turns the radio on. 6 means use HSDPA only, other values might be require if you don't have cover or other subscription, but beware the cost and speed. Why does a modem that works only with radio signals need to explicitly turn on its radio is beyond me. Good luck.

"The number of Unix installations has grown to 10, with more expected." -- The Unix Programmer's Manual, 2nd Edition, June, 1972