[asterisk-dev] About chan_mobile

[Odicha]

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?
>>>>
>>>>
>>>> ------------------------------------------------------------------------
>>>>
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>>
>>
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>
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