[Asterisk-Users] echo's + cheap phones

[Giovanni Powell]

Is it possible that cheap phones (Budgetone) cause echo's? 

I had a digium X100p and i managed to get rid of all the echo problems
i was having. Recently i got a Voicetronix Openswitch12, and getting
terrible noises when i use an IP phone (budgetone) to call analog
phones or PSTN.

I have tried all the possible things (rxgain, txgain, echocancel, i
even changed the codec to g711)

Is it possible that the IP phones itself is causing this.