how to connect Tata Docomo USB modem in Lucid

[Abhishek Dixit]

On Sun, Jul 24, 2011 at 4:19 PM, Tapas Mishra <mightydreams at gmail.com> wrote:
> On Sun, Jul 24, 2011 at 3:27 PM, Tapas Mishra <mightydreams at gmail.com> wrote:
>> On Sun, Jul 24, 2011 at 12:48 PM, Abhishek Dixit <abhidixit87 at gmail.com> wrote:
>>> 2011/7/24 সাজেদুর রহিম জোয়ারদার <toshazed at gmail.com>:
>>>> Dear Abhishek
>>>>
>>>> I am 'ring', trying to resolve your Tata Docomo connection problem.
>>>>
>>>> May I have some screenshots of your system and the workflow that you are
>>>> doing. Such as setting up the connection, trying to connect, failed msg etc.
>>>>
>>>> Plese upload the pics into your picasa account and share the links here as
>>>> though mailing list didn't allow attachments.
>>>>
>>>> --
>>>
>>> Thanks Ring I am describing all the steps starting from scratch
>>>
>>>
>>> Step 1)
>>> I bought a USB modem and lsusb shows
>>> Bus 002 Device 002: ID 05c6:9000 Qualcomm, Inc.
>>>
>>> Step 2) Following is /var/log/messages when I connect the USB modem (
>>> usb-modeswitch was not present when I connected initially )
>>>
>>> http://paste.ubuntu.com/651054/
>>>
>>> Step 3) Now I after some Googling came to know  i usb-modswitch so
>>> installed usb-modeswitch (via synaptics)
>>> and connected the USB modem to laptop the color of light  changed green
>>>
>>> Step 4) and /var/log/messages after usb-modswitch was installed
>>> http://paste.ubuntu.com/651053/
>>>
>>> Step 5) and lsusb showed
>>>
>>> Bus 002 Device 003: ID 05c6:9000 Qualcomm, Inc.
>>>
>>> Step 6)  but I noted here even after installing usb-modswitch the config file
>>>
>>> /etc/usb_modeswitch.d/05c6\:9000
>>>
>>> was missing so I created the file  as given on following link
>>> https://bbs.archlinux.org/viewtopic.php?id=93562
>>>
>>>  the file /etc/usb_modeswitch.d/05c6\:9000  contains
>>>
>>> DefaultVendor=  0x05c6
>>> DefaultProduct= 0x9000
>>>
>>> TargetVendor=   0x05c6
>>> TargetProduct=  0x9000
>>>
>>> MessageContent="5553424312345678000000000000061b000000020000000000000000000000"
>>>
>>> (can also see it here http://paste.ubuntu.com/651056/)
>>>
>>> and I verified it ,if it is working by following command
>>>
>>>
>>> Step 7)
>>> root at bond:~# usb_modeswitch -W -c /etc/usb_modeswitch.d/05c6\:9000
>>> the output of above command is
>>> http://paste.ubuntu.com/651057/
>>> and the problem of above output I note is line no 110,111
>>>
>>> USB error: error sending control message: Broken pipe
>>> Error: could not get description string "product"
>
> This error can be over come via using
> TargetClass=0xff
>
>  you better do not give TargetVendor and TargetProduct but rather the
> class of the device after switching (initially it's "0x08"):
>
>
> This will prevent usb_modeswitch from running twice which it did with
> your configuration, removing the serial driver again.
>
> So your  /etc/usb_modeswitch.d/05c6:9000 should look like
>
> DefaultVendor= 0x05c6
> DefaultProduct=0x9000
>
> #TargetVendor= 0x05c6
> #TargetProduct= 0x9000
> TargetClass=0xff
>
> CheckSuccess=20
>
> MessageContent="5553424312345678000000000000061b000000020000000000000000000000"
>
>>> Step 8)
>>> Now being sure of the fact that modem has been detected on my system
>>>  I did
>>> modprobe usbserial vendor=0x056c product=9000
>>>
>>> Step 9) As per this blog
>>> http://ershadk.wordpress.com/2010/03/30/connect-tata-docomo-internet-in-ubuntu-9-04/
>>> I had created a new connection in
>>> System-->Preferences-->Mobile Broadband-->Add ----here I had added Tata Docomo
>>>
>>> you can see the corresponding snapshots here
>>> https://picasaweb.google.com/107404068162388981296/MicromaxMmx372GUsbModemConnectionProblem
>>>
>>>
>>> the connection option in antenna applet for this new mobile broadband
>>> connection on system tray did appear
>>> but upon selecting it was not able to connect to internet.
>>>
>>> Without installing usb-modeswitch this option was not coming.So I
>>> think some thing did  proceded but not fully.
>>>
>>>
>>>
>>> I have also tried using wvdialconf and wvdial and they have also not
>>> been able to work.
>>> The wvdialconf output was following
>>> http://paste.ubuntu.com/651058/
>>> wvdial.conf by above was ----> http://paste.ubuntu.com/651061/
>
> and in your case /dev/ttyUSB1 is just for measuring quality of signal
> so try with /dev/ttyUSB2 or some thing else.
> your wvdial.conf should like following
>
> [Dialer Defaults]
> Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
> Modem Type = USB Modem
> Phone = *99***1#
> ISDN = 0
> Username = " "
> Password = " "
> Init1 = ATZ
> Init3 = AT+CGDCONT=1,"IP","TATA.DOCOMO.INTERNET"
> Modem = /dev/ttyUSB2
> Baud = 9600
> Auto DNS = 1
> Dial Command = ATDT
> Carrier Check = yes
> Stupid Mode = 1
>
>
> note I have added Init3 commands which are not present in your file.
> After this use following commands
>
> 1) usb_modeswitch -W -c /etc/usb_modeswitch.d/05c6:900
> 2) modeprobe usbserial vendor=0x05c6 product=0x9000
> 3) wvdial
> run all these commands as root
> and I hope you will get connected let me know the output of /var/log/messages
> if any of the above steps I told you fails.
> ------------------------------
> Regards
> Tapas
> http://mightydreams.blogspot.com
>

Hats off to you Tapas.Thanks a lot this really works!!!
I had no idea if I would ever be able to use this USB modem in Ubuntu.
This really works.Once again kudoos to your efforts.
-- 
Regards
Abhi