[Freeswitch-users] DTMF events not occurring while using VOIP-GSM gateway hardware locally

Tihomir Culjaga tculjaga at gmail.com
Fri Sep 15 11:07:34 UTC 2017


Hi,

try tcpdump and than export audio to a file so you can play it ( or play it
directly in wireshark )
maybe the GSMGW is sending InBand DTMF who knows :=)

also, depending of the GSMGW, used, try to identify what DTMF method is
accepting/sending



On 15 September 2017 at 06:07, Андрей Асташов <astashov.andrey at gmail.com>
wrote:

> Hi
>
> I also had a similar problem.
> The problem was only on some GSM gateways. And on the incoming call,
> playanddigits recognizes DTMF normally, and the outgoing one does not.
> It did not work out that way.
> In the console, when dtmf_verbose is enabled, pressing the buttons is
> visible. In tcpdump it is seen that it is in RFC that a click comes.
> Moved to bind_digit_action. Works without problems on all types of locks
> and in any directions.
> Here is the discussion and setting of the profile:
> https://freeswitchforum.com/viewtopic.php?f=6&t=864
>
> 2017-09-14 15:38 GMT+06:00 Deepika Yadav <deepikay at iiitd.ac.in>:
>
>> Hi
>>
>> I need to originate calls to Indian mobile numbers from my python ESL
>> script. I used to use service from a company for sending calls from
>> Freeswitch to GSM network for which I set up external SIP profile.
>>
>> But recently I bought my own GOIP hardware, though I am able to make
>> calls but DTMF events are not getting captured on Freeswitch, API like
>> playandGetDigits does not work and there are no logs on Freeswitch console.
>>
>> --
>> Regards,
>> Deepika
>> https://deepikay.wixsite.com/deepika
>>
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>
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