We've had the same issue. For calls that go between a SIP connection
(desktop phones) and Zaptel connections, there was a lot of problems
with half duplex. We switched
from the Digium card to the Sangoma card and the problem went away.
Doug Lytle wrote:
Ken Williams wrote:
We’ve had an issue since we went live nearly two years ago on Asterisk
where people complain about not being able to talk while someone else
is talking. I had assumed for a very long time this was because of the
phones we went live with (Grandstream GXP-2000’s) and for the longest
time I
Sound like your echo canceller is set to aggressive. Make it like a
walky-talky.
From the archives, January 2006:
On Friday 20 January 2006 15:36, Ronald Hartmann wrote:
Anyone know if it is possible to control how aggressively the
"Aggressive" mode behaves.
No.
I have a situation where Normal echo cancellation is not quite enough,
however when I turn on aggressive mode
We are attacking it to hard and I am unhappy with the walkie talkie
behaviour of the Aggressive mode.
The agressive canceller is agressive because it is designed to turn your voice
channel into a half-duplex (walkie-talkie) communications channel. You can't
have a "half half duplex" situation. :-)
Have you tried recent SVN trunk with the MG2 echo canceller? I have found
that to be the absolute best to date.
-A.
Doug
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The Pythian Group
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