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