[Freeswitch-users] GSM Open - One Way Audio

[Giovanni Maruzzelli]

Hello Nitin,

if you succeed, please let me know, and send me all useful info.

Patches are welcome, and better yet a pull request.

Thanks,

-giovanni


On 8 August 2018 at 16:44, Nitin India <lohchab1 at gmail.com> wrote:

> Hi,
>
> I tested once again with previous versions from the Branch v1.2_stable and
> v1.4 in them GSM Open is working properly without any audio issues. I think
> there is some problem related to the read codec GSMOpen is unable to read
> the stream properly from the Modem.
>
> On Tue, Aug 7, 2018 at 8:11 PM, Nitin India <lohchab1 at gmail.com> wrote:
>
>> Hi  Giovanni,
>>
>> Hope you are doing good, It has been long time we interacted.
>>
>> Today, I tried to use gsmopen with FreeSwitch both the Stable 1.6.20
>> Version and the Latest Version 1.9.X on CentOS 7
>>
>> First issue that I observed is that gsmlib residing in
>> /src/mod/endpoints/mod_gsmopen/gsmlib/gsmlib-1.10-patched-13ubuntu has
>> problem with the Incoming SMS it produce segmentation fault when any
>> Incoming SMS is received. But works fine when GSMLib is compiled and
>> installed from https://github.com/vbouchaud/gsmlib it do not crash and
>> everything works good.
>>
>> Now the Main Problem with both the cases is One Way Audio. FreeSwitch do
>> not hear any kind of audio from the Mobile User. But DTMF Coming from the
>> Mobile User is fine.
>>
>> Lets say I have incoming call from gsmopen at interface1 and once it hit
>> the dialplan like listed below..
>>
>> <action application="ring_ready"/>
>> <action application="answer"/>
>> <action application="echo" data=""/>")
>> <action application="hangup"/>
>>
>> Mobile Subscriber is not able to hear himself back that confirms there is
>> one way audio and the same problem is with record_session application it is
>> not able to record the voice of Mobile User also tested with Sofia
>> Endpoints they also can't hear the Mobile User but Sound Playing from
>> FreeSwitch side goes fine to the Mobile User.
>>
>> Now here is an another 2nd dialplan that seems to work fine and resolve
>> the one way audio issue.
>>
>> <action application="ring_ready"/>
>> <action application="answer"/>
>> <action application="playback" data="/home/files/song2.mp3"/>
>> <action application="echo" data=""/>")
>> <action application="hangup"/>
>>
>>
>> Mobile User is able to hear the Audio from FreeSwitch and also able to
>> send DTMF Digits to FreeSwitch. Once the Playback application finishes
>> playing and the next Echo Application is executed Mobile User is able to
>> hear himself back that shows that freeswitch is now getting audio properly
>> without any issues.
>>
>> I used gsmopen about 4 years back and it use to work fine without any
>> issues on CentOS 6.
>>
>>
>> --
>> ------------------------------------------------
>> Thanks & Regards
>> Nitin
>>
>
>
>
> --
> ------------------------------------------------
> Thanks & Regards
> Nitin (+919999976157)
>



-- 

Sincerely,

Giovanni Maruzzelli
OpenTelecom.IT
cell: +39 347 266 56 18
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