<br><br><div><blockquote class="gmail_quote" style="margin:0;margin-left:0.8ex;border-left:1px #ccc solid;padding-left:1ex">I have a network of offices using Asterisk that are connected via IAX2 trunks. The trunks work great for a day or two then for no reason at all one end of the trunk will become UNREACHABLE while the other end is still connected. The oving nly way to fix the problem is to shutdown Asterisk completly then start it backup again. The end that dies is not always the same, some times it is server A and some times it is server B. Never have I seen that both ends die, just one. The side that is still connected can make calls to the end that died but not the other way. If you call from the server with the dead IAX2 trunk you here "All circuts are busy now." All networks have static IP addresses and their firewalls are setup to allow UDP 4569 to come in to the Asterisk systems.<br>
</blockquote></div><br><div><br class="webkit-block-placeholder"></div><div>We've got customers who experience this problem. We believe it is a fault with their NAT routers - I've traced traffic and our return packets do not arrive at their Asterisk box. Rebooting their NAT/ADSL routers fixes the problem. (Restarting their Asterisk does too - I assume the traffic from the box causes the NAT router to re-open a mapping.</div>
<div><br class="webkit-block-placeholder"></div><div>Steve</div><div><br class="webkit-block-placeholder"></div>