Testing on an NCM-MBIM composite modem.

[Prathmesh Prabhu Chromium]

Thanks a lot Dan and Bjorn.
I saw earlier that MBIM is not specified as a supported protocol in most
the few online stores I could get them.


On Mon, Jun 16, 2014 at 9:39 AM, Dan Williams <dcbw at redhat.com> wrote:

> On Sat, 2014-06-14 at 13:32 +0200, Bjørn Mork wrote:
> > I currently have two such modems:
> > Ericsson H5321gw and Sierra Wireless EM7345
> >
> > That is, I don't know if the latter really is supported in NCM mode. It
> has an odd ff:ff:ff:ff:ff:ff mac address, and I haven't figured out how to
> make it connect in NCM mode. I can attach and connect to the network using
> standard at commands, but I am unable to activate the NCM data channel. At
> first I believed it just failed to send the expected notifications, but
> there is more than that missing.
> >
> > And the fact that Lenovo provides a windows 7 MBIM driver and no NCM
> driver, together with the obviously nonfunctional mac address, makes me
> think that the NCM mode might just be something they left in the USB
> descriptors by accident.
> >
> > The Ericsson modem works fine both as an MBIM and as an NCM device. It
> use the usual Ericsson mbm commands for NCM management, and is fully
> supported by MM in both modes.
>
> Be prepared to buy a few of the H5321gw modems off eBay though, if
> that's where you're going to get them.  Not all firmware versions use
> MBIM, and the upgrade path is somewhat difficult since they don't make
> them anymore, you have to find the firmware somewhere, and you  have to
> flash using Windows and a laptop from the manufacturer that re-branded
> the card.  So you might have to buy a few to get one with MBIM firmware
> already.
>
> Dan
>
> >
> > Bjørn
> >
> > On 14 June 2014 00:37:20 CEST, Prathmesh Prabhu Chromium <
> pprabhu at chromium.org> wrote:
> > >Hi list,
> > >
> > >Could you suggest some (supported?) MBIM-NCM composite modems that use
> > >the
> > >suggested USB descriptor scheme in the MBIM spec, i.e., the
> > >Communication
> > >Interface Class header has two alternate settings, and the
> > >Communication
> > >Data Class has three alternate settings.
> > >
> > >Thanks,
> > >Prathmesh
> > >
> > >
> > >------------------------------------------------------------------------
> > >
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> > >http://lists.freedesktop.org/mailman/listinfo/modemmanager-devel
> >
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>
>
>
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