[Freeswitch-users] Mutiple GSMopen USB modem setup

[Dmitry Lysenko]

Here (http://wiki.e1550.mobi/doku.php?id=troubleshooting) you can find some
useful info and udev rules file.
Do not tried it yet, but it seems it can work. Maybe after slightly
patching.


2012/12/19 Giovanni Maruzzelli <gmaruzz at celliax.org>

> Nandy and Dimitry,
>
> please let us know your findings.
>
> Thanks for sharing!
>
> -giovanni
>
> On Wed, Dec 19, 2012 at 4:46 AM, Nandy Dagondon <nandy1925 at gmail.com>
> wrote:
> > Hi Giovanni,
> >
> > I have not tested it yet. As mentioned by Dmitry, modem serial numbers
> are
> > not accessible. Perhaps, mapping the serial port based on the USB port
> where
> > they're connected would, at least, a workable solution somewhat as
> discussed
> > in this post:
> >
> >
> http://stackoverflow.com/questions/4800099/how-to-identify-multiple-usb-serial-adapters-under-ubuntu-10-1
> >
> > Rgds,
> > Nandy
> >
> >
> > On Tue, Dec 18, 2012 at 9:03 PM, Dmitry Lysenko <
> dvl36.ripe.nick at gmail.com>
> > wrote:
> >>
> >> Hi!
> >> Huawei USB modems does not have accessible via USB protocol serial
> >> numbers. At least E1550, E153 and E171.
> >> Best wishes,
> >>  Dmitry.
> >>
> >>
> >> 2012/12/16 Nandy Dagondon <nandy1925 at gmail.com>
> >>>
> >>> Thanks for the feedback Giovanni.  Re fixing the ttyUSB port
> assignment,
> >>> I have searched a guy made a script to scan USB serial numbers using
> udev,
> >>> then created symbolic links. Will try it out later.
> >>> /Nandy
> >>>
> >>>
> >>>
> >>> On Thu, Dec 13, 2012 at 7:02 PM, Giovanni Maruzzelli <
> gmaruzz at gmail.com>
> >>> wrote:
> >>>>
> >>>> On Thu, Dec 13, 2012 at 4:44 AM, Nandy Dagondon <nandy1925 at gmail.com>
> >>>> wrote:
> >>>> > I have run GSMOpen on CentOS 5.7 defying the Wiki advisory.
> Questions:
> >>>>
> >>>> I would invite you to go for the OS distros detailed in the wiki page.
> >>>> You'll probably encounter problems with different distros, and you're
> >>>> on your own to solve it.
> >>>>
> >>>> > 1. What is the maximum number of USB modems tested? Can we get the
> >>>> > numbers
> >>>> > and the CPU used?
> >>>>
> >>>> I've heard about 48 concurrent, and 64. Me personally have tested with
> >>>> 5. No CPU consumption. The critical part is the USB BUS. So use
> >>>> cascading and POWERED good usb 2.0 hubs
> >>>>
> >>>> > 2. I'll be installing multiple modems each connected to a different
> >>>> > mobile
> >>>> > network. Is the /dev/ttyUSB assignments  constant for every modem?
> >>>> > Meaning
> >>>> > it doesn't change if I plug it on different USB jacks.
> >>>>
> >>>> it will change not only if you change USB port, but also randomly if
> >>>> you stay on the same USB port and reboot (and sometimes also without
> >>>> rebooting). That's a "feature" of Linux distros (a demented one,
> >>>> cannot understand why they choose this behavior).
> >>>>
> >>>> Soon or later I'll look into this, and come out with a solution (I've
> >>>> made some preliminary research and reasoning about in the past).
> >>>>
> >>>> If you have a commercial interest in that, and a real budget for it,
> >>>> contact me in private as consultant, or put a public bounty on it.
> >>>>
> >>>> -giovanni
> >>>>
> >>>> --
> >>>> Sincerely,
> >>>>
> >>>> Giovanni Maruzzelli
> >>>> Cell : +39-347-2665618
> >>>>
> >>>>
> >>>>
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>
> --
> Sincerely,
>
> Giovanni Maruzzelli
> Cell : +39-347-2665618
>
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