[asterisk-users] Echo problem in VoIP-calls

[Gareth Blades]

Jonas Kellens wrote:
> Hello list,
> 
> this is the setup :
> 
> analogue phone --> Grandstream GXW4008 --> Linksys WAG160N --> 
> Asterisk-server (public)
> and
> Zoiper softphone --> Linksys WAG160N --> Asterisk-server (public)
> 
> 
> When calling with an analogue phone + Grandstream GXW and also when 
> calling with the Zoiper softphone, we experience echo on both calling 
> parties.
> 
> Because the echo is there with the analogue phone AND with the Zoiper, I 
> conclude that it is not the Grandstream GXW4008 gateway that is causing 
> the echo.
> 
> Could it be the router ???
> 
> 
> These are the VoIP speed test results :
> 
> VoIP test statistics
> --------------------
> Jitter: you --> server: 4.2 ms
> Jitter: server --> you: off
> Packet loss: you --> server: 0.0 %
> Packet loss: server --> you: off
> Packet discards: 0.0 %
> Packets out of order: 0.0
> 
> 
> 
> Kind regards,
> 
> Jonas.
> 

Echo cannot be caused by a router.
The zoipher softphone is probably being used with a headset and I 
suspect the microphone is picking up the sounds from the earphones 
resulting in echo. Try turning down the earphone volume to see if this 
helps. If it does invest in some better headphone preferably ones where 
the microphone has built in background noise cancelation.

For the analogue phone it could be a similar issue. Some phones are 
better than others. Cant you use a proper SIP phone? They work so much 
better.