求助：Tiny210，linux下3G 拨号问题

我有一个华为E1750无线网卡，上面是3g的联通的手机卡，当我在PC机（win7系统）下插入时会提示安装驱动，完成后就可以打电话什么的。但是在6410上（Linux系统）却连不上，任何提示也没有，按着社区的某个帖子的命令行也不行，如下：
[root@FriendlyARM run]# 3g-ppp /etc/3g-modem/12d1.1446.12d1.1001【这个地方是根据自己的具体情况并不一定是3g-ppp   /system/etc/3g-modem/12d1.1446.12d1.1001】
/usr/sbin/3g-ppp: line 7: can't open /dev/ttyUSB0: no such file
DefaultVendor=  0x12d1
DefaultProduct= 0x1446
TargetVendor=   0x12d1
TargetProduct=  0x1001
TargetClass=    not set
TargetProductList=""

DetachStorageOnly=0
HuaweiMode=0
SierraMode=0
SonyMode=0
GCTMode=0
MessageEndpoint=  not set
MessageContent="55534243123456780000000000000011060000000000000000000000000000"
NeedResponse=0
ResponseEndpoint= not set
Interface=0x00

InquireDevice enabled (default)
Success check disabled
System integration mode disabled

usb_set_debug: Setting debugging level to 15 (on)
USB error: couldn't opendir(): No such file or directory

Looking for target devices ...
 No devices in target mode or class found
Looking for default devices ...
 No devices in default mode or class found. Nothing to do. Bye.
[root@FriendlyARM run]# call-ppp wcdma
[root@FriendlyARM run]# rm: can't remove '/var/run/ppp0-ok': No such file or directy
rm: can't remove '/var/run/pppd2.tdb': No such file or directory
最后还是没成功！！！
有哪位大神做过这方面的东西，指教小弟一下，非常感激！！！

/usr/sbin/3g-ppp: line 7: can't open /dev/ttyUSB0: no such file

3g-ppp这个工具期待无线网卡插入后系统中出现一个/dev/ttyUSB0的设备节点。你可以在插入后通过dmesg命令查看内核调试信息确认这个节点生成了没有。