[asterisk-dev] Queries regarding Echo Cancellation in Zaptel-1.2.6

[Paul Cadach]

Hello,

Chan Kwang Mien wrote:
> My questions is :
>
> Does anyone know how I could add delay at the Asterisk PBX such that the
> echo would be delayed so that it becomes audible at Phone B.

Just add an additional Asterisk server in call chain - you will have voice path
delay at least 20-40 ms. To increase delay, you can choose costly codec between
Asterisk boxes (like g.723, iLBC, g.729, gsm).


WBR,
Paul.