Thanks for the input guys. What Tony and Satish suggested are alone the lines of what I need. It gives me a controlled solution. So, I can change the level of distortion as I please. Using tc I pretty much killed the line to the point I wasn't able to receive call and terminal was really slow as well. I am going to try the the packet drop method now. I think that is the right one for the situation.<div>
<br></div><div>Thanks again<br><br><div class="gmail_quote">On Thu, Apr 28, 2011 at 11:57 AM, Tony Mountifield <span dir="ltr"><<a href="mailto:tony@softins.co.uk">tony@softins.co.uk</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
In article <<a href="mailto:BANLkTim8W%2BvjJJ87oYy1MVpPsfwfLUt0Kg@mail.gmail.com">BANLkTim8W+vjJJ87oYy1MVpPsfwfLUt0Kg@mail.gmail.com</a>>,<br>
<div><div></div><div class="h5">Bruce B <<a href="mailto:bruceb444@gmail.com">bruceb444@gmail.com</a>> wrote:<br>
><br>
> How can I introduce some distortion, echo, chopping sound and all other bad<br>
> quality things that can happen to a SIP trunk? I have plenty of bandwidth<br>
> and crisp clear lines so the only thing that I can think of is to limit<br>
> bandwidth but even that requires quite some scripting work.<br>
><br>
> Is there any easy way to simulate a distorted SIP line temporarily for<br>
> testing?<br>
><br>
> I am appreciate experienced inputs.<br>
<br>
</div></div>You could use iptables to cause random packet loss.<br>
<br>
See <a href="http://code.nomad-labs.com/2010/03/11/simulating-dropped-packets-aka-crappy-internets-with-iptables/" target="_blank">http://code.nomad-labs.com/2010/03/11/simulating-dropped-packets-aka-crappy-internets-with-iptables/</a><br>
for examples. You might want to precede those rules with ACCEPT rules<br>
for the traffic you want to remain reliable (such as TCP connections).<br>
<br>
Cheers<br>
Tony<br>
<font color="#888888">--<br>
Tony Mountifield<br>
Work: <a href="mailto:tony@softins.co.uk">tony@softins.co.uk</a> - <a href="http://www.softins.co.uk" target="_blank">http://www.softins.co.uk</a><br>
Play: <a href="mailto:tony@mountifield.org">tony@mountifield.org</a> - <a href="http://tony.mountifield.org" target="_blank">http://tony.mountifield.org</a><br>
</font><div><div></div><div class="h5"><br>
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