From: Brad Templeton <[EMAIL PROTECTED]>
On Mon, Jan 22, 2007 at 09:59:06AM +0000, Tim Panton wrote:
> In the meanwhile, use IAX, which understands about NAT pretty well.
> If you have multiple SIP phones on a LAN behind a NATing router, just
> put a small asterisk box on the LAN. It can manage your hairpin
> calls internally, save you bandwidth by trunking the IAX traffic
> to the central asterisk and avoid all the NAT hassle by using
> a single port (outgoing) and refreshing it often enough for the
> router to hold it open.
>
> Tim Panton
>
> www.mexuar.net
> www.westhawk.co.uk/
IAX is a fine protocol as far as it goes, however this answer
is really not a workable one. There are only a few IAX phones,
and they are not nearly as solid and full featured as the many
SIP phones. There are some IAX termination and origination
providers, but there are far more SIP providers.
...
IAX is great but SIP is also a reality, and putting
Asterisk into the "just works" category is a really
important milestone. One I think that is intended
to be improved a lot for 1.6.
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?
Yuan Liu
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