[Asterisk-Users] How to set the jitter buffer

[Chris Orme]

Hi!

I just wondered if anyone would mine posting their successful jitter
buffer settings here for me if they get a moment ??

I've spent a few hours trying to set the jitter buffer up reasonably
logically and can definitely tell it makes a difference and can introduce
latency and echo if setup incorrectly but I can't see a good post anywhere
describing properly what the three settings actually really do or a
typical range of settings for them.

I do roughly understand how a jitter buffer is supposed to work.
But can it help against echos heard on the lines or just the 'clicks' -
are they jitter?

Usually my cross-IAX latency is under about 35ms (commonly only 5-6ms) and
SIP latency (I know this doesn't really matter as there's no buffer for
SIP) as recorded by 'sip show peers' as about 70ms (but in reality ping I
think is about half this).

My current setup is :

SIP and IAX clients --> my * --> providers via IAX (one 5ms away, one 80ms
away)

jitterbuffer=yes 
dropcount=5 
maxjitterbuffer=100 
maxexcessbuffer=45 

If anyone can post any amplification on these settings apart from what's
in iax.conf or their experiences or maybe some adjustments I should try
that'd be really really helpful.

Thanks!!  Chris