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

[Chandra]

have u had any luck with this>?

cm
----- Original Message ----- 
From: "Owen Kelso" <owen at barkie.net>
To: <asterisk-users at lists.digium.com>
Sent: Monday, January 12, 2004 9:51 AM
Subject: Re: [Asterisk-Users] Asterisk + BudgeTone (behind NAT)


> Thanks for all of your responses.
> 
> I confirmed that the phone works perfectly without NAT or through a IPSec
> VPN (yeah, I know, same thing).
> 
> 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.
> 
> I'm going to write Netgear to see what they have to say about it.  If I
> make any progress I'll post to the list...thanks again, Owen
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