On 26 Jan 2007, at 06:19, Yuan LIU wrote:
From: Brad Templeton <[EMAIL PROTECTED]>
> I have a really dumb question. It appears that Yahoo, MSN, AIM,
you name
> them, they don't have a NAT problem, and some use SIP. I don't
think they
> all stay in voice path, either. What takes?
When you control both ends of the path, you can eliminate all NAT
problems. Skype also deals almost perfectly with NAT (by using
other nodes as relays if necessary) as does IAX. SIP was designed
Thanks for this information. Does this mean two IAX boxes can talk
behind their respective NAT's (without any server sitting in voice
path)? I'm imagining this:
Asterisk1 <--> NAT1 --- { Internet } --- NAT2 <--> Asterisk2
If Asterisk1 can talk to Asterisk2 at trunk level, I'll be happy.
Yes, with 1 proviso - one end needs a known IP address and a port map
for udp 4569 in the router. The other can simply register to it with
zero
router config.
Tim Panton
www.mexuar.net
www.westhawk.co.uk/
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