[asterisk-dev] About chan_mobile

Tue Aug 11 14:40:28 CDT 2009

I am about to test the channel with the model E226 by Huawei. I'll post the
results whenever I finish the tests.

As you said, the AT commands for the modem manipulation are not standard and
I am trying the understand them by reading your source code. If you have any
documentation that you took as reference, I'll appreciate the download-link
contribution :).

On Tue, Aug 11, 2009 at 3:30 PM, Odicha <odicha at hotmail.com> wrote:

> If anyone has another hardware that could work and /or any question about
> how it works I'll be pleased to help.
>
> what it does at now...
>
> Huawei audio modems have three ttyUSB ports. So they use une port for
> GPRs/3G data connection ( subdevice 0), next port for audio (only audio
> slinear stream.. passtrough directly to asterisk when voice is enabled) and
> next port for AT communication (some no standard AT commands for enabling
> voice streaming on other port, and all rest of standard stuff)
>
> So It mainly uses AT commands and some routines for enabling/disabling
> audio
> stream. Not complex at all.
>
> The "worst part" in module is about modem detection. It might be rewritten.
> It searches for device strings in /sys/bus/usb/devices/ . It might work
> with
> some fs library I think
>
> How it starts.
> First of all It does the "dirty search" of modems. It will write into
> asterisk one file
> sebi_devices.conf
> with data about modems their tty port and their IMEI
> After that it loads sebi.conf. If Imei from modem config exists in
> sebi_devices.conf (it's attached ..) it loads modem channel.
>
>
> ----- Original Message -----
> From: "Thomas Kenyon" <digium at sanguinarius.co.uk>
> To: "Asterisk Developers Mailing List" <asterisk-dev at lists.digium.com>
> Sent: Tuesday, August 11, 2009 7:00 PM
> Subject: Re: [asterisk-dev] About chan_mobile
>
>
> > Odicha wrote:
> >> Hi.
> >>
> >> Take a look at something like that I have done.
> >> It's for Huawei voice usb modems
> >> It's in beta stage yet, for testing in 1.4.x branch
> >> It works fine on Huawei E169/K3520 modems (the only voice modems I own)
> >>
> > This sounds fantastic, a much better idea than my current chan_mobile
> > setup.
> >
> >> you have it at
> >> http://asterisk-es-rsp.irontec.com/svn/team/Odicha/unstable/chan_sebi/
> >>
> >> Now it supports voice and sms services (tested with 4 modems at time).
> >> It has early media working fine, CID detection and a good audio quality
> >> (no
> >> digital/analog conversion).
> >>
> >> ToDo.
> >> Sms support for standard serial devices (analog FCTs for example...).
> >> Better modem detection routines.
> >>
> >> Voice for standard mobiles not in mind because generally they don't
> >> support
> >> audio in serial/usb channel. So get audio through and audio card iy's a
> >> dirty solution and you can only have one channel at time.
> >> Using USB modems with voice capabilities the only limit is USB channel
> >> (in
> >> 2.0 not problem at all for working with 4 or 5 devices at time) (I don't
> >> have more modems for stress testing...). And they are inexpensive at
> now.
> >> It
> >> could be like "X100P" of mobile channels.
> >>
> >> Best Regards
> >>
> >> ----- Original Message -----
> >> From: "Kai Hoerner" <kai at ciphron.de>
> >> To: "Asterisk Developers Mailing List" <asterisk-dev at lists.digium.com>
> >> Sent: Tuesday, August 11, 2009 2:48 PM
> >> Subject: Re: [asterisk-dev] About chan_mobile
> >>
> >>
> >>> i think it would work. but your channel will conflict with chan_alsa /
> >>> chan_oss ..
> >>> chan_alsa uses mic + earphone connectors of the sound card connected.
> >>> the source code of this channel driver is a good starting point, if you
> >>> really intend to implement it this way.
> >>>
> >>> but your idea sounds kinda ugly.
> >>> why dont you use bluetooth?
> >>>
> >>>
> >>> Carlos Ruiz Diaz schrieb:
> >>>> Hello,
> >>>>
> >>>> I am about to start the development of a usb version of the
> >>>> chan_mobile. I almost finished my research and my idea is to use the
> >>>> USB serial connection to fully control the phone using AT commands
> >>>> (like chan_mobile). The main problem with this approach is the audio
> >>>> and by now, the only idea that I have is to use the headset (mic +
> >>>> earphone ) connected to the mic and speaker slots of the computer. I
> >>>> am also looking for a way to isolate the audio channels.
> >>>>
> >>>> Do you think it will work?
> >>>>
> >>>>
> >>>>
> ------------------------------------------------------------------------
> >>>>
> >>>> _______________________________________________
> >>>> --Bandwidth and Colocation Provided by http://www.api-digital.com--
> >>>>
> >>>> AstriCon 2009 - October 13 - 15 Phoenix, Arizona
> >>>> Register Now: http://www.astricon.net
> >>>>
> >>>> asterisk-dev mailing list
> >>>> To UNSUBSCRIBE or update options visit:
> >>>>    http://lists.digium.com/mailman/listinfo/asterisk-dev
> >>>
> >>> _______________________________________________
> >>> --Bandwidth and Colocation Provided by http://www.api-digital.com--
> >>>
> >>> AstriCon 2009 - October 13 - 15 Phoenix, Arizona
> >>> Register Now: http://www.astricon.net
> >>>
> >>> asterisk-dev mailing list
> >>> To UNSUBSCRIBE or update options visit:
> >>>   http://lists.digium.com/mailman/listinfo/asterisk-dev
> >>>
> >>
> >>
> >> _______________________________________________
> >> --Bandwidth and Colocation Provided by http://www.api-digital.com--
> >>
> >> AstriCon 2009 - October 13 - 15 Phoenix, Arizona
> >> Register Now: http://www.astricon.net
> >>
> >> asterisk-dev mailing list
> >> To UNSUBSCRIBE or update options visit:
> >>    http://lists.digium.com/mailman/listinfo/asterisk-dev
> >>
> >>
> >
> > _______________________________________________
> > --Bandwidth and Colocation Provided by http://www.api-digital.com--
> >
> > AstriCon 2009 - October 13 - 15 Phoenix, Arizona
> > Register Now: http://www.astricon.net
> >
> > asterisk-dev mailing list
> > To UNSUBSCRIBE or update options visit:
> >   http://lists.digium.com/mailman/listinfo/asterisk-dev
> >
>
>
> _______________________________________________
> --Bandwidth and Colocation Provided by http://www.api-digital.com--
>
> AstriCon 2009 - October 13 - 15 Phoenix, Arizona
> Register Now: http://www.astricon.net
>
> asterisk-dev mailing list
> To UNSUBSCRIBE or update options visit:
>   http://lists.digium.com/mailman/listinfo/asterisk-dev
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.digium.com/pipermail/asterisk-dev/attachments/20090811/cd0d8181/attachment-0001.htm 