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 <[EMAIL PROTECTED]> 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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