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 Forum index » Advanced Topics » Cutting edge
MediaTek 2G USB dongle doesn't work at all.
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Krishnamurti Naskar

Joined: 20 Apr 2012
Posts: 28
Location: Calcutta
PostPosted: Sat 26 Jan 2013, 10:54    Post subject:  MediaTek 2G USB dongle doesn't work at all.
Subject description: Micromax 200G USB dongle		  
- MediaTek 2G USB dongle(made by Micromax Ltd.,India)
is not supported at all.

doing LSUSB shows the following in the screenshot.

it behaves like a flash storage.
Help needed.
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Master_wrong

Joined: 19 Mar 2008
Posts: 455
PostPosted: Sat 26 Jan 2013, 11:39    Post subject:  
maybe this is similiar ?
http://ubuntuforums.org/showthread.php?t=1810316

if it is then you will need usb-modswitch

Quote:
Re: connecting Tata Docomo USB Modem in Ubuntu 10.04
Ok this problem has been solved
http://www.draisberghof.de/usb_modes...hp?p=4849#4849
Two changes made it work

1) As given on this link
https://bbs.archlinux.org/viewtopic.php?id=93562
I created /etc/usb_modeswitch.d/05c6\:9000
incorporate suggestions above both links
Code:

########################################################
# Siptune LM-75 ("LinuxModem")

DefaultVendor= 0x05c6
DefaultProduct=0x9000

#TargetVendor= 0x05c6
#TargetProduct= 0x9000
TargetClass=0xff

CheckSuccess=20

MessageContent="5553424312345678000000000000061b000000020000000000000000000000"

As per suggestion on this link
http://www.draisberghof.de/usb_modes...hp?p=4849#4849
TargetCLass I have bolded that is one thing.

Also the wvdial.conf file which
Code:

wvdialconf

was creating was not a correct one i.e. some things had to be edited manually.
The modem in my case was detected at
Code:

/dev/ttyUSB0
/dev/ttyUSB1
/dev/ttyUSB2

and in these only /dev/ttyUSB2 was the correct port for my modem rest port were for quality control.

This is clear from Josh's suggestion here
http://www.draisberghof.de/usb_modes...hp?p=4849#4849
So the wvdial.conf which was generated as a result of wvdialconf command was
Code:

[Dialer Defaults]
Init1 = ATZ
Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
Modem Type = Analog Modem
;Password =
ISDN = 0
;Username =
New PPPD = yes
Phone = *99***1#
Modem = /dev/ttyUSB0
Baud = 9600

where as the correct one should be
Code:

[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
Baud = 960000
Auto DNS = 1
Dial Command = ATDT
Carrier Check = yes
Stupid Mode = 1

In my case Baud rate is not correct I had manually changed that (I am still searching for correct one).
I have added Init3 commands and carrier information etc in it.So if you come across this post and it does not work then try modifying /dev/ttyUSB2 with /dev/ttyUSB1 or /dev/ttyUSB0 etc or any other parameter which needed a change for you.

After making above changes I had to use following commands to connect

1)
Code:

usb_modeswitch -W -c /etc/usb_modeserial.d/05c6\:9000

2)
Code:

modprobe usbserial vendor=0x05c6 product=0x9000

3)
Code:

wvdial

It worked for me.
So you can try these steps at your end.My Modem is Micromax MMX 372G.

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Krishnamurti Naskar

Joined: 20 Apr 2012
Posts: 28
Location: Calcutta
PostPosted: Sat 26 Jan 2013, 22:46    Post subject:  
Your modem is Micromax MMX 372G,which is, I presume, a 3G device.
Mine is 2G(Model-Micromax MMX 200G.).
Will the trick work? Crying or Very sad
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