[Asterisk-Users] Re: poor state of IAX2 code? (was: why a perfectly fine iax2 host becomes UNREACHABLE?)

[Louis-David Mitterrand]

On Thu, May 04, 2006 at 12:51:52PM -0700, Tom Engleward wrote:
> --- Vahan Yerkanian <vahan at arminco.com> wrote:
> > Andrew Kohlsmith wrote:
> > > On Thursday 04 May 2006 11:31, Louis-David
> > Mitterrand wrote:
> > >> I've got this low-ping 100%-up dsl connection
> > between two asterisk
> > >> 1.2.7.1 servers. And oftentimes one of them would
> > declare its opposite
> > >> UNREACHABLE.
> > 
> > Same, here, two asterisk 1.2.7.1 boxes connected to
> > the same switch... Over a week I see at least one case of one of the
> > boxes becoming unavailable for the other... simple iax2 reload
> > fixes the problem.
> > 
> > Been like this for ages.
> 
> <rant>
> >From this thread today I've learned that the problems
> I've been having the entire time I've been using
> asterisk (about two weeks) stem not from NAT, as I
> originally thought, but from asterisk itself, so that
> if I were to move my asterisk box to a public IP
> address, my iax2 connection to my PSTN originator
> (which also runs asterisk) would _still_ be
> unreliable.
> This makes iax2 on asterisk useless for receiving
> calls. No matter how many spiffy features asterisk
> has, there is one simple nonnegotiable requirement: it
> must always answer incoming calls. If it can't do
> that, then it can't be relied on. And over iax2, it
> can't do that.

Right now I have:

CLI> iax2 show peers
tmm1 192.168.0.1 (S) 255.255.255.255 4569 (T) UNREACHABLE

CLI> sip show peers
tmm1 192.168.0.1 A 5060 OK (40 ms)

And it has been so for 15 minutes.

Why is IAX2 so flaky?

If I did not resort to SIP for inter-asterisk communications I would be 
out of a job at this time.