<br><br><div class="gmail_quote">On Wed, Feb 29, 2012 at 9:22 AM, Alejandro Imass <span dir="ltr"><<a href="mailto:ait@p2ee.org">ait@p2ee.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
On Tue, Feb 28, 2012 at 8:58 PM, Steve Totaro<br>
<<a href="mailto:stotaro@asteriskhelpdesk.com">stotaro@asteriskhelpdesk.com</a>> wrote:<br>
><br>
><br>
<br>
[...]<br>
<div class="im">> Yes, I have had no problems with Grandstream first gen ATAs, configured with<br>
> server and credentials and shipped off, they just work.<br>
<br>
</div>We use the HT-286, the server is on a public IP the nat setting on<br>
asterisk is set to yes and without port re-direction the ATAs have<br>
never connected from a private network, so I honestly find this "SIP<br>
plug and play" very hard to believe. But if it is true, then maybe you<br>
can actually help us figure out all the NAT issues we've had with SIP<br>
for the past 5 years. Perhaps, it is simply ignorance on our side and<br>
we have something fundamentally wrong in our set-up somewhere that may<br>
be have been causing these issues with NAT.<br>
<br>
Our set-up is fundamentally public and private Asterisk servers<br>
running on FreeBSD. Versions may vary from FBSD 7 thru 8.2 and<br>
Asterisk 1.4 and 1.6. We are planning to upgrade every server to FBSD<br>
8.2 and Asterisk 1.8 but we are in that process right now. Some<br>
Asterisk run in jails so I can understand the NAT issues there may be<br>
caused by the server itself. I honestly *love* your OpenVPN idea but I<br>
have to find a cheap ATA that could run as an OpenVPN client.<br>
<br>
Taking the simplest example a simple Asterisk 1.6 server on a public<br>
IP running on the base system (not in a jail):<br>
<br>
We run an operation that spans several countries including Canada, the<br>
US and the Latin American Andean region. As examples, with Canadian<br>
ISPs such as Rogers and Bell we have always had to redirect the ports<br>
and use STUN server for the HT-286 to register to the Asterisk server.<br>
<br>
In the US we have the same problem with Comcast networks, so I don't<br>
understand how you say that you plug a Grandtream SIP ATA to a Comcast<br>
router and it just works. However, in a couple of NOLA countries the<br>
ISP's routers actually give public IPs, so if the SIP ATAs are<br>
connected directly to the ISP router, or in the DMZ then it just works<br>
as you say, BUT if the ATA is connected behind the firewall, or to a<br>
WiFi router, then we've _allways_ had to redirect ports. In every<br>
sigle customer we have had to send instructions on how to redirect<br>
ports, and of course to configure firewall if present.<br>
<br>
I just don't understand how you and other here say that a SIP ATA can<br>
"just work". On the contrarty, with IAX2 using cheap AG-188N from<br>
Atcom they are just plug and play when shipped with a standard conf,<br>
and we have none of the quality issues you are referring to. We do<br>
have some call drops however, and some hangup problems but they don't<br>
affect our clients as much as having to deal with NAT issues.<br>
<br>
We may not run 15K extensions like you but I think we have a pretty<br>
good testing ground and have dealt with a fair share of NAT problems<br>
with SIP, that you and others here apparently don't have, so I am as<br>
amazed by your likeness of SIP as perhaps you are amazed as our<br>
likeness of IAX.<br>
<div class="HOEnZb"><div class="h5"><br></div></div></blockquote><div><br></div><div>If you can post some SIP debug info from an ATA trying to register without any redirection and also the relevant portions of your sip.conf, I am sure I can help.</div>
<div><br></div><div>Do it from a new location with an el cheapo home router, Linksys WRTXXX.</div><div><br></div><div>If I cannot help you in a few emails, we can take this offline.</div><div><br></div><div>Actually paste your entire sip.conf in pastebin or something, as well as sip debug.</div>
<div><br></div><div>Also the configs of your ATAs.</div><div><br></div><div>I think you have over-engineered to the point of creating problems. This is very common. My philosophy is "KISS"</div><div><br></div>
<div>Thanks,</div><div>Steve T</div></div>