求助: Tiny6410A linux 下使用3G模塊上網(wǎng)問題

blackbird08

我用的是Huawei EM660 的CDMA2000模塊。板上系統(tǒng)為：友善 linux-2.6.28.6-20111214 發(fā)行版。該內(nèi)核應(yīng)該是支援3G模塊的。
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

錯誤信息是撥號ATDT#777 后無法連接上。請問這是什么回事？

2.  另外接上USB EM660 3G模塊時
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模塊好像是連接到ttyUSB2上 ，我網(wǎng)上查到的資料好像都是說ttyUSB0上，所以這個會不會有問題？

blackbird08

沒人幫助，我自己解答。
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

從交互的信息^RSSILVL:0^M^M 得知3G信號強度為0。因為初次接觸，原來是3G模塊未接天線，接上天線后就通訊正常。
看來還是要靠自己比較靠譜。