[asterisk-users] SIP to IAX2 with delayed echo

[Tim Panton]

Ok, I'll bite, what possible IAX bugs/shortcomings/features can cause  
echo ?

Tim.

On 20 Nov 2008, at 18:47, Steve Totaro wrote:

> 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
> <dfullertasterisk at shorelinecontainer.com> 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" <cjames at callone.net> 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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