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1.Run the following command in the terminal

lsusb

This should display some details like

Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 002: ID 045e:0083 Microsoft Corp. Basic Optical Mouse
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 007: ID 19d2:fffe ONDA Communication S.p.A.
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

2. From the above line in bold we know, the vendor and product values to be used in the following command in terminal.

modprobe usbserial vendor=0×19d2 product=0xfffe

3. Now execute the following command in the terminal

wvdialconf

4.Now edit the file /etc/wvdial.conf using your favourite editor and enter the correct username and password and uncomment the related lines. Also add Stupid Mode = 1 to the file. The phone value is #777

5. Execute the following commands to grant access rights

sudo chown root:dip /usr/sbin/pppd
 sudo chmod 4754 /usr/sbin/pppd
 sudo chmod 777 /etc/ppp/pap-secrets
 sudo chmod 777 /etc/ppp/peers

6. Now restart the machine once disabling other network connections (including wireless).

7. After restart execute the following command in the terminal

wvdial

8. Now your connection should be established and get a output similar to below lines.

sa@ubuntu:~$ wvdial
--> 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 +FCLASS=0
ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
OK
--> Modem initialized.
--> Sending: ATDT#777
--> Waiting for carrier.
ATDT#777
CONNECT
--> Carrier detected.  Starting PPP immediately.
--> Starting pppd at Fri Mar 12 17:43:58 2010
--> Warning: Could not modify /etc/ppp/chap-secrets: Permission denied
--> --> CHAP (Challenge Handshake) may be flaky.
--> Pid of pppd: 2726
--> Using interface ppp0
--> pppd: X�U[08]h�U[08]
--> pppd: X�U[08]h�U[08]
--> pppd: X�U[08]h�U[08]
--> pppd: X�U[08]h�U[08]
--> pppd: X�U[08]h�U[08]

Reference:

• http://www.mywebarchives.com/tech/?p=39
• http://ubuntuforums.org/archive/index.php/t-931872.html