Simple tests.  Change from the highly touted "IAX2" to SIP, but before
that, download X-Lite and see if you have the same delay.  If you
don't then look at your Polycoms, if you do, then switch to SIP.
-- 
Thanks,
Steve Totaro
+18887771888 (Toll Free)
+12409381212 (Cell)
+12024369784 (Skype)


On Thu, Nov 20, 2008 at 1:39 PM, Dave Fullerton
<[EMAIL PROTECTED]> wrote:
> There are also settings which will turn on local echo cancellation for
> the handset, headset and/or speaker phone. I don't recall their names at
> the moment. They are off by default on the handset and headset unless
> you're using a very recent (3.0+) SIP app.
>
> Tim Nelson wrote:
>> I'm not sure about the 3 second delay, but I've seen plenty of echo issues 
>> on Polycom phones when the gain has been changed on the handset. Check the 
>> voice.gain.tx and voice.gain.rx settings in your sip.cfg to make sure 
>> they're not too high.
>>
>> You also may want to make sure there aren't any system resource constraints 
>> such as high CPU usage or memory usage... :-)
>>
>> Tim Nelson
>> Systems/Network Support
>> Rockbochs Inc.
>> (218)727-4332 x105
>>
>> ----- "c james" <[EMAIL PROTECTED]> wrote:
>>
>>> A Polycom 550 and a IAX client (Mozphone and ZoIPer were used) are
>>> having a conversation.  Call quality is reported as good except for
>>> an
>>> echo with a 3 second delay.
>>>
>>> Most of my searches are saying echo happens only on the PSTN piece,
>>> but
>>> there isn't one here.
>>>
>>> Can someone point me in the right direction?
>>>
>>> Asterisk 1.4.21.2
>>> Under 40 users
>>> Quad-Core AMD Opteron(tm) Processor 2352 and 4G RAM (Hey, that's what
>>> they wanted to use!)

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