Echo cancellation problem

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Essentially, calls made from Siphon with the same settings as my hardware 
phones have echo 
cancellation issues.

I hear and sound fine on the iPhone, but remote parties hear a lot of echo. 
It's mostly when the calls 
are sent outside of the IP PBX in the big bad world. Call within our network 
(LAN) display some echo 
cancellation issues, but not the massive amount (you can fully hear yourself) 
when talking to outside 
callers. 

I'm not sure how to debug this one. We use an Asterisk 1.4 / FreePBX 4.2 based 
setup (PBX in a 
Flash) and our hardware phones have no echo cancellation issues. 

Other than that the calls sound great and Siphon works really well. Even when 
the phone auto-
locks.

Original issue reported on code.google.com by pkoly...@gmail.com on 10 Oct 2008 at 8:29

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In the beta 6 version I deactivate AEC.
Logically, if you use headset or earphone, you shouldn't ear echo.

Original comment by samuelv0...@gmail.com on 10 Oct 2008 at 8:46

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Original comment by samuelv0...@gmail.com on 10 Oct 2008 at 8:46

• Changed state: Accepted

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I was having the issue described (remote party hears echo) but it seems to be
resolved in the latest release, 2.01.

Can anyone else confirm this? Can we mark this as verified and close the issue?

Original comment by neilbags@gmail.com on 8 Jan 2009 at 7:47

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i have the latest version 20090104-1 with remote party hears echo....

also application hangs sometime when starting.....

Original comment by zob...@gmail.com on 15 Jan 2009 at 8:24

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I also have the latest version 20090104-1 and the remote party reports hearing 
alot 
of echo of their own voice. The only way to get around this issue is the turn 
the 
audio volume down where I can barely hear the remote party which is not a great 
solution.

Original comment by frank.da...@gmail.com on 23 Jan 2009 at 7:20

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I don't know if the new features will resolve the issue. But in the next version
(2.0.3) it will be possible to enable/disable echo canceler and voice activity 
detection.
When you will test, if the problem is not resolved, you will be able to reopen 
the issue.

Original comment by samuelv0...@gmail.com on 25 Jan 2009 at 4:35

• Changed state: Fixed

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This still seems to be a problem in version 2.07 using gizmo5.com
(proxy01.sipphone.com) to provide the outbound call termination.

Problem goes away when turning the volume way down or using a headset, and is 
not an
issue on my other sip phones (sipura spa3000 and others) suggesting this is not 
a
service issue.

Thanks for reviewing!

- Shawn

Original comment by sorei...@gmail.com on 19 Mar 2009 at 9:19

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I forgot to mention above that the state of the AEC switch in the settings 
seems to
have little effect (a friend helping me test said that it sounded "a bit 
better" but
still had significant echo with it in the "on" position.

Original comment by sorei...@gmail.com on 19 Mar 2009 at 9:21

[GoogleCodeExporter]

I'm running siphon 2.1.0 through a gizmo5/googlevoice connection on an ipod 
touch.
When I use the built in speaker the echo of the other side back to itself is 
awful.
Setting the aec option doesn't seem to make any difference.

I can't compare with any other voip applications. since this is the only one I 
have
that can enable the speaker on a touch when a microphone is plugged in.

Original comment by kma...@gmail.com on 13 Nov 2009 at 12:43