[Asterisk-Users] Speaking of echo canceling...

[Dinesh Nair]

On 10/31/05 05:56 Andrew Kohlsmith said the following:
> No.  There is no need because IP<-->IP calls are what is known as "four wire 
> circuits" -- there is no mixing of the received audio and the send audio, and 
> thus zero need for an echo canceller.  You only need echo cancellation when 
> you go from a 4-wire circuit to a two-wire circuit.

which is sometimes the case when echo results from the handset mics of the 
IP hardphones. the phone's ec mechanism doesnt always work, and customers 
are wont to blame the ip pbx instead of the phones.

-- 
Regards,                           /\_/\   "All dogs go to heaven."
dinesh at alphaque.com                (0 0)    http://www.alphaque.com/
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