[Asterisk-Users] Grandstream GXP-2000

[Erick Baum]

It does appear to be the remote party that is hearing the echo as a result
of the loud volume on the other end. They actually had a few people calling
in from the outside report that they could hear their echo. When they turned
down the volume on the Grandstream, the echo seemed to go away. So I will
bring up the possibility of using the AEC when using the handset.
 Thanks,
Erick

 On 10/29/05, Peter Svensson <psvasterisk at psv.nu> wrote:
>
> On Fri, 28 Oct 2005, Erick Baum wrote:
>
> > We have 50 of these phones in one location and a couple remote phones.
> The
> > problem seems to be caused by the volume settings on the phone. We have
> > noticed that the echo seems to be worse when the volume is very high on
> the
> > phone (not using speakerphone). We're still testing, but that's what
> we've
> > been able to come up with so far.
>
> Which end experience the echo? The phone with the loud volume, or the
> other end? If it is the remote end that experience echo then I would
> suspect acoustic coupling from the earpiece to the microphone inside the
> handset.
>
> If this is the case there are a few solutions:
> - lower the volume (duh!)
> - try connecting another handset with a known good decoupling of the
> mic/speaker
> - get grandstream to use the software echo canceller when using the
> handset as well as when on the speaker phone.
>
> Peter
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