http://www.voip-info.org/wiki/view/Causes+of+Echo
Rob Townley wrote:
Please tell me what "hybrid echo" is? Where does it come from? Does
it have something to do with analog vs T1 trunk lines?
On 4/23/07, William Moore <[EMAIL PROTECTED]> wrote:
On 4/23/07, Patrick Fortin <[EMAIL PROTECTED]> wrote:
> Are echo cancellation parameters useful when using the ztdummy
driver and
> no physical card ?
No. The echocan software and hardware only cancel hybrid echo. They
do not cancel acoustic echo that would be generated by voip phones
with bad speakerphones or bad headsets.
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