Mailinglist Archive: opensuse (769 mails)

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Re: [opensuse] VoIP ATA does NOT need to have a foxed address, only the ISP does
On 05/26/2016 04:50 PM, Anton Aylward wrote:
Actually, with NAT, you have to use an STUN server to communicate the
real address to the other end. Otherwise, it would try to use the NAT
address, which wouldn't be reachable. This is just one example of a
hack made necessary by NAT.
I'm sorry, no you don't need a STUN server.

Perhaps some servile providers configure their systems so to make it
necessary, but mine certainly doesn't!

In fact they insist that a STUN is NOT to be configured.

OK, your VoIP phone is behind NAT, with an RFC 1918 address. The other
end has to be able to reach your phone. What address does it use? And
how does it get it?

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