<p>SIP is just more supported so its easier for the providers to deal with it. I personally also believe that IAX is not supported by big providers because if they do so, it'll just make asterisk more famous than they want it to be. Secondly, as IAX name suggests, it was primarily designed for trunking between asterisk servers, and it does it with less headaches than SIP, given that your provider supports it well.<br>
</p>
<p>Zeeshan A Zakaria</p>
<p>--<br>
Sent from my Android phone with K-9 Mail.</p>
<p><blockquote type="cite">On 2010-05-12 5:12 PM, "Joe Greco" <<a href="mailto:jgreco@ns.sol.net">jgreco@ns.sol.net</a>> wrote:<br><br><p><font color="#500050">> What is wrong with IAX2 protocol?<br>> If IAX2 is so much better than SIP so why providers discontinu...</font></p>
The same thing that's wrong with a lot of theoretically superior<br>
technologies: SIP is *more* universal, and therefore if it's a choice<br>
of supporting two technologies or just one, SIP has more bang for the<br>
buck. Almost every gadget or gizmo supports SIP. Few support IAX2.<br>
To support IAX2 for the relatively small number of people who know what<br>
it is and who are running Asterisk or IAX2-capable gear may be more<br>
trouble than it is worth.<br>
<br>
... JG<br>
<font color="#888888">--<br>
Joe Greco - <a href="http://sol.net" target="_blank">sol.net</a> Network Services - Milwaukee, WI - <a href="http://www.sol.net" target="_blank">http://www.sol.net</a><br>
"We call it the 'one bite at the apple' rule. Give me one chance [and] then I<br>
won't contact you again." - Direct Marketing Ass'n position on e-mail spam(CNN)<br>
With 24 million small businesses in the US alone, that's way too many apples.<br>
</font><p><font color="#500050"><br>-- <br>_____________________________________________________________________<br>-- Bandwidth and Colocati...</font></p></blockquote></p>