Re: ZTE MF192 3G Modems

[Brian Gitonga Marete <marete toshnix com>]

On Sun, Jul 15, 2012 at 11:22 PM, Brian Gitonga Marete
<marete toshnix com> wrote:
> On Mon, Jul 9, 2012 at 9:25 PM, Brian Gitonga Marete <marete toshnix com> wrote:
>> Hello all,
>>
>> I have the same (or very similar) ZTE MF192 modem referred to by
>> Dmitry Morozhnikov here:
>> https://mail.gnome.org/archives/networkmanager-list/2012-February/msg00014.html
>> My modem is supplied by Orange Kenya, for use in their Orange Internet
>> 3G service.
>>
>> In summary, it also does NOT work for me with MM/NM out of the box.
>> What is more, the patch suggested by Dmitry in the mail thread
>> referenced above suffices at least establish an Internet connection
>> that is fully usable.
>>
>> Wvdial works well with this MF192 device, and attached is my wvdial
>> config as wvdial.conf. I have also attached wvdial.log, so that you
>> can see what wvdial uses to successfully drive it.
>>
>> I was also able to capture a USB trace (using Wireshark) of windows
>> driving the modem from within a Virtualbox VM. I think this will allow
>> you to develop full support for this modem. The capture trace reflects
>> all traffic to/from the modem from hotplug to a short time after I
>> successfully "connect" from withing the Windows program. Please see
>> the attachment zte-mf192.cap.xz for this captured trace. View it from
>> Wireshark.
>>
>> Also attached are the files modem-manager.log and network-manager.log,
>> showing the log of a failed connection attempt (before applying the
>> patch referenced above). Please also see lsusb.txt for USB ID details
>> about my modem.
>>
>> One last thing: I can confirm that, as in Dmitry case, the AT commands
>> ZPAS? and ZSNT=1,0,0 do not seem to work on this modem. (And, in fact,
>> I don't see them in the Windows trace (zte-mf192.cap.xz) which
>> contains many AT commands to the modem.
>>
>> If I had a better idea about the structure/architecture of MM, I might
>> be able to help better, with actual code :)
>>
>> Please let me know if you need any further information.
>>
>> Thanks!
>
> Hello all,
>
> I sent the above email a few days ago but I don't think it went
> through on account of a large additional attachment.
>
> That attachment (372K in size) contains a full USB capture trace of
> the modem being successfully driven from Windows (everything from
> Hotplug to connection), while running in a VM (captured using
> Wireshark). It is clear from the trace that Windows uses PPP on it.
> The device is 19d2:1517 initially and usb_modeswitch transforms it to
> a device with ID 19d2:1519.
>
> To whom do I send this USB capture trace, which should allow
> development of complete support of this device?
>
> I reiterate that Dmitry's patch works to establish a full and usable
> internet connection.
>
> I am happy to supply any further information, or to help in analysis
> or debugging, even at fairly low levels.
>

Allow me to add that this device is supplied by Orange Kenya, for
their new 3G service here.


-- 
Brian Gitonga Marete
Toshnix Systems - http://toshnix.com