[asterisk-users] IAX2 trunks unreliable becoming UNREACHABLE aftera time

[bilal ghayyad]

Hi;

I faced same problem, and I restarted my Routers at
both sides and did not resolve it. Anyway, I am still
inverstigating.

Regards
Bilal
----------------------------
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.
>


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.

Steve



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