[Freeswitch-users] USB GSM Dongle with FreeSwitch for voice calls

[Shabbir abbasi]

today i tried to test gsmopen it has many problums, gsmopen has lack of
reconnect to modem and modem is marked as dead instead of disconnect and
try to reconnect,
 i have also tested asterisk  module chan_dongle which works great(it has
function to test modem every 10 secon with AT command andif no reply then
disconnect it and reconnect again ) and i have no disconnection with that
module same cpu same hardware same OS, but i want to test  module gsmopen
for voice quality,  gsmopen needs some patches to work fine
 , if anyone make patches it will be great

On Sun, Mar 29, 2015 at 11:07 AM, Sergey Safarov <s.safarov at gmail.com>
wrote:

> I thinking following device cannot be removed
> /dev/ttyU3.3
> /dev/ttyU3.3.init
> /dev/ttyU3.3.lock
> It is exist because GSM device exist (/dev/ttyU3.3) in the system and must
> be controlled (restarted, reinited, disabled, /dev/ttyU3.3.init) and device
> is opened (/dev/ttyU3.3.lock)
>
> On Sun, Mar 29, 2015 at 2:05 AM, Luiz Fernando Softov <
> fernando at softov.com.br> wrote:
>
>> Hi
>>
>>
>> ***** - Enable coredump http://blog.urdada.net/2007/12/31/71/
>> ***** - Find it after next crash
>> ***** - Analyze coredump
>>
>> First, when i say crash, it's a panic in USB, not a crach of
>> daemon/executable. This is because Freeswitch/GsmOpen is attached in TTY
>> and lock the TTY, blocking other processes to manage USB (tty).
>>
>> ***** Find what is calling USB modem power off and disable it.***** No poweroff, no error.
>>
>> Some modems power off and power on again, i try to find what is causing this error, without success. Maybe some errors in power suply or modem just reset, because i try it with 4, 10, 20 and 30 modems, and the problem persists.
>> In my search, google and other forums, i found someone talking about modem resetting for own.
>>
>> Sometimes the user wan't to change de SIM in modem, and remove it and put it again, without make a dettach in my interface/system.
>>
>> Or if he not remove the modem and just change de SIM (o.O), its a request of many users of my system using E303 or other modems.
>>
>> I identify this, because i'm attached in ttyU0.0, ang get event im my source or a CME-ERROR 10, if modem just changed SIM, then i reset the modem with AT command ^RESET.
>>
>>
>> I'm using mod_xml_curl to get interfaces info, and ESL events to manage this... Then i make a "gsm remove xxxx" and when modem arrive i make a "gsm reload".
>>
>> This way not affect the calls in progress.
>>
>>
>> I talk with Shlomi Agiv, and apply some functions of his patch, now i'm just making tests....
>>
>>
>> Now i'm having some problems, just when i call a "gsm remove" in ESL, its stop to reply, even when i send other command, like "sofia status". It's the same when i send command with fs_cli...
>>
>>
>> Before ask, i make some debugs, change source, put log and other things..
>>
>> I ask, because some times other people have the same problem!
>>
>> Thanks for the reply...
>>
>>
>>
>> --
>> Luiz Fernando Softov
>> http://www.softov.com.br
>> fernando at softov.com.br
>>
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>
>
> _________________________________________________________________________
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> http://www.freeswitchsolutions.com
>
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>
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