[asterisk-users] Echo on SIP to SIP calls?

[J. Oquendo]

On Fri, 27 Feb 2009, Bruce Komito wrote:

> I know the subject of echo has been discussed ad nauseum, but I think I
> have a somewhat unusual problem.  I am suddenly experiencing occasional
> echo on SIP to SIP calls.  This is a new development and has never
> happened in all the years we've been running *.  The phones involved are
> not junk phones (Cisco 7960's and Linksys 942's).  I don't recall seeing
> any settings anywhere than have anything to do with echo cancellation on
> non-ZAP devices.  Anyone have a clue where I should start looking?
> 
> TIA
> 
> Bruce Komito
> WPTI Telecom
> (775) 236-5815
> 

Try adjusting the volume on the mics on either end. You could
be getting feedback. Happens when I make SIP to SIP calls and
I keep my phones on speakerphones. And before it's asked, has
happened to Snom's, Polycoms, 7960's a 7970, Aastra. 


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J. Oquendo
SGFA, SGFE, C|EH, CNDA, CHFI, OSCP

"Enough research will tend to support your
conclusions." - Arthur Bloch

"A conclusion is the place where you got
tired of thinking" - Arthur Bloch

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