This weekend I got myself a shiny new Airtel 3G USB modem. It is a Huawei E1731 model of the data card that supports speeds up to 7.2Mbps and also has some storage capacity. Though it says up to 7.2Mbps, I did not expect it to go anywhere beyond 100Kbps. Needless to say, I was absolutely shocked & thrilled at the same time when I saw this:
I was like – WOW!
It took me some time to make it work with the F16 machine; for the install scripts had numerous bugs of unresolved paths and compilation failures. The install script comes with a NDIS kernel driver and other library modules. So after fixing installtion, I started wvdial(1), which of-course failed saying: “COMMAND NOT SUPPORTED”.
There was no way to know which command not supported. First I thought it was because the NDIS driver failed to load, but even after compiling that driver myself and inserting it with insmod(8), the dongle refused to work. After searching a little and some trial and error I finally settled for the following wvdial(1) configuration.
# cat wvdial.conf
Init1 = ATZ
Init2 = ATQ0 V1 E1 S0=0 &C1 &D2
Init3 = AT+CGDCONT=1,"IP","airtelgprs.com"
ISDN = 0
Modem Type = Analog Modem
Phone = *99#
Username = www
Password = www
Baud = 9600
Modem = /dev/ttyUSB0
This is automatically generated by the wvdialconf(1) program. Except the Init3 string which is shown in bold above. That is the string which helps in initialising the device.
The solid(un-blinking) cyan light on the device says: connected to the 3G+ network. I hope it only gets better from here.