play the voice signal ?

Pepijn van den Berkhof vandenberkhof.pepijn at
Fri Sep 23 13:49:54 UTC 2011


The instructions to download the ETSI reference codec can be found here: although I never got it working completely. There is an output stream but there is no audio data in it. Just (random?) clicks and pops.


Op 23 sep. 2011, om 15:20 heeft Dieter Spaar het volgende geschreven:

> Hello Bigsat,
> On Fri, 23 Sep 2011 13:49:43 +0200, "Bigsat" <bigsat at> wrote:
>> Is it possible to release some part of the code necessary to decode 
>> Tetra voice or give some explaination of Gsmtap usage ?
> Just in case, I have sent my "proof of concept" modification
> for voice decoding to the authors of Osmocom TETRA for proper
> integration a while ago. As far as I am aware the current
> source code should be able to decode voice or at least contain
> the instructions how to do it (the ETSI reference codec is most
> certainly not included for copyright reasons).
> Best regards,
>  Dieter
> -- 
> Dieter Spaar, Germany                           spaar at

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