[Asterisk-Users] calling to asterisk and listening to music (GSM)

[Esteban Maestre]

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...

Any idea? Does it have anything with the mobile-GSM standard used for coding?

What to do?

thanks,

-e