[Asterisk-Users] echo cancellation on an iax2 channel

[Script Head]

I have minor echo on an IAX2 channel when using Firefly and a head
set. I have tried various headsets and settings but still a little bit
of the echo remains and I'd love to get rid of it. After some research
I stubled on zaptel/mec2.h but it seem that it works only on the ZAP
channel. Is there something I can do on the IAX2 channel?