[Asterisk-Users] Asterisk 1.2.4 IAX2 New Jitterbuffer Tuning

[Jesus E Zepeda]

In my case I don't have a T1 or even a fractional T1, but cable and have
noticed that choppy calls can be reduced by adding tos settings. Like:

Tos=lowdelay|throughput|reliability

Regards,
Jesus

-----Original Message-----
From: Adam Robins [mailto:arobins at PharmaCentra.com] 
Sent: Monday, February 20, 2006 14:43
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: RE: [Asterisk-Users] Asterisk 1.2.4 IAX2 New Jitterbuffer
Tuning


I have now set the "resyncthreshold" to -1, to turn it off.  I have also
set the "maxjitterbuffer" to 2000.

I still received 10 complaints of choppy calls today on Asterisk 1.2.4
versus only 1 complaint on Asterisk 1.07.

 

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of yusuf
Sent: Monday, February 20, 2006 10:27 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [Asterisk-Users] Asterisk 1.2.4 IAX2 New Jitterbuffer
Tuning

Adam Robins wrote:
>
Hi Adam

> After many days of playing with the new jitterbuffer and trunking
options for IAX2, I have finally received almost acceptable quality.  I
am receiving 5-8 complaints a day of calls "breaking up" from both the
customer and agent sides.  What I have discovered is that in most of
these cases, the new jitterbuffer performed a resync during the call.
Currently, I have the resyncthreshold, and all other jb parameters at
their default levels  The traffic is running over a fairly high latency
WAN connection between Canada and Atlanta (IAX2, ILBC).  Idle ping times
run about 85ms.
>
I am interested to know why you are using ilbc, n why not g729 ot g723
or speex.  What is the size of the WAN connection.  How many calls are
you running over this link.  I just need to see how others are fairing
with IAX2 over WAN links, as I am the final stages of testing on my side


thanks,
yusuf
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