8 Feb
2017
8 Feb
'17
3:38 p.m.
On Wed, Feb 08, 2017 at 12:28:36PM +0200, Arsen wrote:
I am not sure that nat_uac_test can determine type of
NAT device.
and why you need all these checks if you always use rtpproxy? (another q
from 2013 :)
The answer is: you don't have to.
The idea is to reduce using of rtpproxy for better
scalability and voice
quality. If we can beat all types of NAT with a near-end NAT traversal,
except symmetric NAT why do we always use proxy option in case if NAT is
detected.
Near End NAT traversal relies on support and configuration of clients,
something I have no control over. It simply fails to often, either due
to misconfiguration, simple lack of support, a buggy implementation or
something else not in my control.
Far End NAT just works (tm). Can't speak for rtpproxy, but rtpengine
scales just fine. Only positive I can think of is that you might keep
some audio outside of your network.