Ken D'Ambrosio wrote:
For the record, I've done a couple of Asterisk installs, and HATED echo
-- or feebly attempting to get Asterisk's flakey software algorithms to
do anything about it. Finally got sick 'n tired, and threw money at it
-- got the Sangoma quad-span T1 card.
And echo freaking VANISHED. (Note that, with EC disabled, I do get echo
about 1/6 of the places I call. So it's really, truly working, and not
just luck.)
They use the G.168-2002 algorithm; I, personally, had never heard of it
before, but I bounced it off a friend of mine (he's a hardware architect
for a major VoIP switch manufacturer -- they sell to places like Time
Warner), and he was of the opinion that G.168 is the _ONLY_ algorithm.
So, from now on, I'm doing DSP-based EC. And Sangoma just came out with
some analog cards with EC -- haven't tried 'em out yet, but I'm looking
forward to doing so.
-Ken
G.168-2002 is not an algorithm. It is a test spec. The algorithms are up
to the implementor. They need to pass the tests in G.168-2002. Most only
pass a subset of those tests. You need to look at the fine print to see
what that subset it. If your friend thing G.168 is an algorithm, I would
not trust his competance.
Steve
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