Thanks a lot for those useful informations. I will try all of this and feedback the results to the list.
I wonder if I could transform my linux box as an usb bridge to sniff all
the datas exchanges between the modem and windows :-)
Modem ------ Linux box USB1
|
|
Soft
|
|
Windows ---- Linux box USB2
Fran�ois
Le mar 03/02/2004 � 00:45, Arnim Laeuger a �crit :
> Hi Fran�ois,
>
> > T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 5 Spd=12 MxCh= 0
> > D: Ver= 1.00 Cls=ff(vend.) Sub=ff Prot=ff MxPS=64 #Cfgs= 1
> > P: Vendor=08e3 ProdID=fffb Rev= 0.00
> > C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=100mA
> > I: If#= 0 Alt= 0 #EPs= 0 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
> > I: If#= 0 Alt= 1 #EPs=13 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
> > E: Ad=81(I) Atr=03(Int.) MxPS= 16 Ivl=10ms
> > [...]
> > E: Ad=0a(O) Atr=01(Isoc) MxPS= 16 Ivl=1ms
> > I: If#= 0 Alt= 2 #EPs=13 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
> > E: Ad=81(I) Atr=03(Int.) MxPS= 64 Ivl=10ms
> > [...]
> > E: Ad=0a(O) Atr=01(Isoc) MxPS= 16 Ivl=1ms
>
> This looks very much like an EZ-USB chip in pre-enumerated state. These
> chips (Cypress AN2131) load their firmware via USB into internal RAM and
> re-enumerate with different descriptors.
> See http://www.linux-usb.org/ezusb/ for details.
>
> I.e. without the firmware the unit is absolutely useless (except for
> hacking, of course :-) Maybe the vendor is willing to provide the
> firmware as a separate file so you can download it with the help of
> fxload (see http://linux-hotplug.sourceforge.net/?selected=usb) or the
> Ezusb-2131 driver from http://ezusb2131.sourceforge.net/
> Alternatively, you could trace the firmware download from within Windows
> with USBsnoopy.
>
> Once you have the firmware running, you can start to figure out the real
> protocol of this unit.
>
> Hope this helps
>
> Arnim
>
>
>
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