[asterisk-users] Audio Files

[Julien Claassen]

Hi!
   I think all - at least all PSTN - calls have the same quality in means of 
bitrate, number of channels and samplerate.
   It's 8kHz, 16bit and mono.
   About noise, I didn't have problems with that. Seems it's not really about 
"quality". Probably it would be helpful, if you tell us, which 
extensions/protocol you used.
   Kindest regards
           Julien

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