[asterisk-users] SIP to IAX2 with delayed echo

[c james]

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!)

Gains are at their default values.  Definitely no problem with the
resources.