Within our LAN we have:
1 SIP server with a x100p card
4 X-Lite SIP softphones
1 ATA
Calls between the softphones are ok.
Calls between the softphones and ATA are ok.
But calls via the x100p have an echo.
I can hear my voice echo on the softphones and the ATA.
The person on the other end of the line cannot hear any echo.
The “/etc/asterisk/zapata.conf” contains:
echocancel=yes
What is causing this echo?
How do I suppress this?
short of purchasing a card with echo can built in, there is no quick fix to echo. it’s a matter of trying the different cancellers, tweaking your zap gains and crossing everything you have. you can move a known-working system and FXO card to a different motherboard and experience huge echo.
try the mark2 echo canceller and switching on aggressive echo cancellation (zaptel source, requires recompiling zaptel). Turn on echotraining in zapata.conf. Hopefully this will help…