[Asterisk-Users] Asterisk + BudgeTone (behind NAT)

[Glenn Dalgliesh]

I have had several installations where I was unable in any configuration to
make the FVS318 work with VOIP traffic. I don't belive it is related to any
paticular Phones or VOIP GW have see same problems with even Cisco 7960's

Has anyone opened a ticket with Netgear on this issue?
----- Original Message ----- 
From: "Philipp von Klitzing" <klitzing at pool.informatik.rwth-aachen.de>
To: <asterisk-users at lists.digium.com>
Sent: Saturday, January 24, 2004 5:35 PM
Subject: Re: [Asterisk-Users] Asterisk + BudgeTone (behind NAT)


> Hi!
>
> > > I've concluded that the Netgear router (FVS318) performing the NAT is
> > > corrupting the outgoing RTP packets.  Traces confirmed that the
BudgeTone
> > > is sending them out with a UDP checksum of 0 but the next hop after
the
> > > Netgear router they are set to a non-zero value (an incorrect one).
> > > Asterisk is never even seeing the packets because the kernel is
> > > recognizing them as corrupt and dropping them, hence the recvfrom()
> > > "Resource temporarily unavailable" errors in rtp.c.
> >
> > Here is Netgear's response:
> > ---------------------------- Original
Message ----------------------------
> > SIP VOIP phones do not work with netgear routers. The router will always
> > set a value in the checksum.
>
> For the record: With a BT 101 behind NAT provided by a Netgear WGR614 I
> don't experience that error message.
>
> Philipp
>
>
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