[asterisk-users] Glitches in voicemail prompts

[Ed W]

I changed from using a recent asterisk system standalone to a Trixbox
install and now I get "clicks" and minor dropouts on the voicemail
prompts.  System load is non-existant on this machine, interrupts
*appear* to be fine, and as near as I can tell the glitch is at the same
point in the prompt each time...

Any suggestions on how to debug this further?

To my ear it sounds like what happens when you get an overflow in some
decoder code and the levels have wrapped around?

Any thoughts?

Ed W