Re: A general (learning) query

[Ajay Garg <ajaygargnsit gmail com>]

The ISP details are ::

Country  :  Uruguay
Provider :  Ancel
Plan      :  GPRS 


Thanks and Regards,
Ajay

On Wed, Jun 13, 2012 at 12:11 AM, Ajay Garg <ajaygargnsit gmail com> wrote:

Hi Experts :)

I am trying to connect via a 3G USB modem (via wvdial), and get the following error ::

############################################################################
-bash-4.1#  wvdial
--> WvDial: Internet dialer version 1.61
--> 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#
ERROR
--> Invalid dial command.
--> Disconnecting at Tue Jun 12 15:35:16 2012
############################################################################


I have googled, and found quite a posts.
However, all these points discuss about implementation details, and I am feeling overwhelmed.

I will be grateful if someone could please point me to some literature, that states the entire lifecylce of USB modem connection
In particular, I don't quite understand how some particular AT commands are linked to the USB-model/ISP/APN.

Any help will be a big boost to solving the specific problem at my end.



I will be really grateful guys.


Thanks and Regards,
Ajay