[asterisk-users] howto debug bad iax voice quality?

[sean darcy]

I'm set up to call 3 digit extensions at the office ( running 1.4.13) 
from home ( 1.6.0 beta7) over iax. 1 out of 3 times the call breaks up, 
but only in the home -> office direction. office -> home always sounds good.

If it were a poor internet connection, I'd expect both sides of the 
conversation to be poor. Not surprisingly, each side can ping the other 
in the same time - 25-30ms. Both servers have the iax jitterbuffer on.

I could always use a lower bit-rate codec ( now using mu-law ), but I 
don't see how it could be a "one way" bit-rate issue.

Any suggestions appreciated.

sean