If you got the following error message when you’re connecting to the Internet using 3G modem, you might want to check the 3G modem configuration first before you buy a new 3G modem.
# wvdial -C /etc/wvdial-modem.conf
--> WvDial: Internet dialer version 1.60
--> Cannot get information for serial port.
--> Initializing modem.
--> Sending: ATZ
ATZ
OK
--> Sending: ATQ0 V1 E1 S0=0 &C1 &D2
ATQ0 V1 E1 S0=0 &C1 &D2
OK
--> Modem initialized.
--> Sending: ATDT*99#
--> Waiting for carrier.
ATDT*99#
NO CARRIER
--> No Carrier! Trying again.
--> Sending: ATDT*99#
--> Waiting for carrier.
To check the modem configuration, you can need to use the software provided by the modem. I am using Huawei 3G modem and it comes with the Mobile Partner software. Unfortunately the software can only be run in Windows XP.
So your first step should be find a computer with Windows XP installed, then install the Mobile Partner software to it.
[Luckily, a friend of mine, allows me to use his laptop for testing my modem.]
After finishing the installation, run the Mobile Partner software and check the network configuration. You can do so by going to “Tools > Options“. Then go to the “Network” option and select the “Network Type” tab :
Here is my “Network Type” setting when I can’t go to the Internet :
After I change the “Network Type” to the following configuration :
I am able to connect to the Internet although I only get connection with GPRS speed. That’s good enough compare to if I don’t have Internet connection at all.
[Updated July 31, 2009 : There is an open source software called umtsmon that can be used to change the network type. And now I changed my connection type to "3G Preferred" but I only got GPRS speed. I haven't play with the MobileConnect software again.]
