Help on Huawei 220 3.5g wireless modem card

[loody]

Dear all:
I follow the steps on
https://help.ubuntu.com/community/DialupModemHowto/Huawei/E220
to setup my usbmodem.
But I get "IPCP: timeout sending Config-Requests".
I google on the web and following the website below to add options of
vendor and device ids about Huawei while loading usbserial module.
http://forums.whirlpool.net.au/forum-replies-archive.cfm/897808.html
But I still get the same error log.

Have anyone bumped to the same problem as me before?
Or someone can suggest me where I can get help, like posting this mail
to some mailing list?
ps: I use wvdial and I also attach my dmesg, /var/log/message and
/etc/wvdial.conf for your reference.
Thanks for your help,
miloody
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