[asterisk-users] To jitter buffer or not to jitter buffer?

[Chris Bagnall]

Greetings list,

Some time ago (probably about a year ago now) we disabled IAX jitter
buffering on all our boxes because it was causing issues in a mixed 1.0 and
1.2 environment.

One thing I've noticed over the last few months as more and more clients
have moved from the 512k/1mb/2mb ADSL connections they were using onto "up
to 8mb" connections is that whilst overall throughput is a lot better, the
connections do seem to be more variable and have a tendency to stutter
somewhat even with very little load on them.

As a result, I'm considering reintroducing jitter buffering on our boxes now
that everything's running 1.2 thoughout.

Are there any pearls of wisdom out there on 1) whether enabling the jitter
buffer is a good idea, and 2) what the recommended settings would be on an
ADSL connection?

I know that configuration is going to be a bit of a black art, as I'd
imagine the "best" settings will be different for different users, but a
starting point that folks have found working well over low-cost ADSL
connections would be much appreciated.

Thanks in advance.

Regards,

Chris
-- 
C.M. Bagnall, Director, Minotaur I.T. Limited
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