我用的是Huawei EM660 的CDMA2000模块。板上系统为：友善 linux-2.6.28.6-20111214 发行版。该内核应该是支援3G模块的。
1. 使用命令 pppd call cdma2000
...
send (AT+CFUN=1^M)
expect (OK)
^M
AT+CFUN=1^M^M
OK
-- got it
send (ATDT#777^M)
expect (CONNECT)
^M
ATDT#777^M^M
^MODE: 0^M^M
^M^M
^RSSILVL:0^M^M
^M^M
^HRSSILVL:0^M
^M
NO CARRIER
-- failed
Failed (NO CARRIER)
Connect script failed
错误信息是拨号ATDT#777 后无法连接上。请问这是什么回事？
2. 另外接上USB EM660 3G模块时
UBIFS: recovery completed
[root@FriendlyARM /]# usb 1-1: new full speed USB device using s3c2410-ohci and
address 2
usb 1-1: configuration #1 chosen from 1 choice
usb-storage: probe of 1-1:1.0 failed with error -5
option 1-1:1.0: pl2303 converter detected
usb 1-1: pl2303 converter now attached to ttyUSB0
usb-storage: probe of 1-1:1.1 failed with error -5
option 1-1:1.1: pl2303 converter detected
usb 1-1: pl2303 converter now attached to ttyUSB1
usb-storage: probe of 1-1:1.2 failed with error -5
option 1-1:1.2: pl2303 converter detected
usb 1-1: pl2303 converter now attached to ttyUSB2
usb 1-1: New USB device found, idVendor=12d1, idProduct=1001
usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=4
usb 1-1: Product: HUAWEI Mobile
usb 1-1: Manufacturer: HUA WEI TECHNOLOGIES
usb 1-1: SerialNumber:
3G模块好像是连接到ttyUSB2上 ，我网上查到的资料好像都是说ttyUSB0上，所以这个会不会有问题？
