[asterisk-users] IAX best practices

[Michelle Dupuis]

You will likely have latency issues - causing choppiness.  Start with a
traceroute to validate latency.

Michelle Dupuis
Technical Support Specialist

Generation Software - Linux and Asterisk solutions and support
Visit us at www.generationd.com
 
 

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Asterisk
Sent: Friday, March 02, 2007 10:26 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: RE: [asterisk-users] IAX best practices

Thanks Steve!

What are usually the best approaches in troubleshooting the audio quality
issues and QoS related stuff when putting two Asterisk boxes together via
IAX?

Have you ever tried connecting Asterisk boxes in the same VPN (but still in
different countries)?

Regards,
Alex


-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Steve Totaro
Sent: Thursday, March 01, 2007 4:22 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [asterisk-users] IAX best practices

Asterisk wrote:
> Hi guys,
>
> I am planning to connect two Asterisk boxes that are currently running 
> in two different countries, using IAX.
>
> I was wondering if anyone could provide me with some links or
suggestion
> regarding best practices in connecting two Asterisk in such way. I
guess
> many of you have already tried this, and already have some know-how 
> (what I should be careful about, what to avoid, etc...)?
>
> Regards,
> Alex
>   
Bandwidth and latency.  IAX2 is remarakably good at traversing NAT and even
double NATs.  It should just work.  The issues that I ran into are low
bandwidth and latency.  Not much you can do about latency besides getting a
better route and putting QoS on your equipment and hoping that

your provider either observes your tagging or is not very latent to begin
with.  The other is bandwidth which I found SPEEX works wonders (but adds to
latency).

In my experience, bandwidth issues result in choppy audio and latency
results in delays which cause people to talk on top of each other and can be
extremely annoying.

Try pinging a router or device at the remote side to get an idea of how
latent your connection will be. 

Thanks,
Steve
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