[Asterisk-Users] calling to asterisk and listening to music (GSM) -->>Anyone, please?????

[Mark Edwards]

Simple.

GSM is a voice codec. It is not designed in any way to compress music. It is
_only_ designed to work with voice. You will therefore never be able to hear
good quality music over a GSM codec. No matter how much you try.

sorry.

Mark

On 11/21/05, Christoph Rothe <asterisk-users at christophrothe.de> wrote:
>
>  Hi all!
>
> I'm trying to play some music from asterisk, and when I call to the PBX
> from a GSM mobile phone, the more I speak while hearing the music, the
> worst is the quality of the music I hear... My audio is at 8Khz,
> 16bits/sample.
>
> I've tried different codecs for asterisk, but results are the same...
>
> If I call to the PBX from a conventional phone, I can speak while hearing
> the music, with no quality loss...
>
>
>
> Hi,
>
> try the following: Take one phone and hodl it next to a normal speaker
> with music.
>
> Now call it with a mobile phone and try the same. It results for me in the
> same: The music is disturbed.
>
> So I am sure it has to do with the mobile GSM-standard and not with
> asterisk.
>
> Christoph
>
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--
regards,

Mark P. Edwards
FWD: 667917
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