On Wed, September 28, 2005 5:41 pm, Matt said:
> I have heard this issue when on hold with Cisco and Vonage... I
don't
> think it's an asterisk problem I htink it's a G711 "problem"... or
gsm
> "problem". Basically they are made for voice, and I think
> the music goes outside their encoding ranges... sound logical?
Rolling off the high-end of the audio range above 4 KHz helps.
Try madplay instead of mpg123 and also have the playback gain reduced
~12 db with this musiconhold.conf line:
default =>
custom:/usr/local/lib/asterisk/mohmp3/,/usr/local/bin/madplay
--mono --sample-rate=8000 --attenuate=-12 --output=raw:-
-kim
> I have heard this issue when on hold with Cisco and Vonage... I
don't
> think it's an asterisk problem I htink it's a G711 "problem"... or
gsm
> "problem". Basically they are made for voice, and I think
> the music goes outside their encoding ranges... sound logical?
Rolling off the high-end of the audio range above 4 KHz helps.
Try madplay instead of mpg123 and also have the playback gain reduced
~12 db with this musiconhold.conf line:
default =>
custom:/usr/local/lib/asterisk/mohmp3/,/usr/local/bin/madplay
--mono --sample-rate=8000 --attenuate=-12 --output=raw:-
-kim
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