I’m having severe problems with Echo. I’ve tried just about everything on voip-info.org and can’t seem to eleminate the problem.
This is my setup:
Current version of Asterisk, FreePBX and Zaptel running on via Epia/C3 500 box.
Digium TDM “Developer’s Kit” card with 1 FXS and 1 FXO. The FXS port is currently unused.
I have the FXO port connected to a Lucent ACS PBX system.
On my computer I have IAXComm softphone.
I dial the correct extension with IAXComm, get routed into the PBX which gives me an outside line, and hear the PBX Generated dial tone very clearly. I then dial my home phone number.
When I talk into the analog telephone I hear myself echoed very loudly with about a half second delay, and then about 6 echos with the standard echo volume decrease.
The headset I have connected to my computer does not hear the echo, and when I speak into the mic on the headset I don’t get echo.
I have tried recompiling the zaptel drives with various echo cancelers and I don’t seem to get any improvement. I’ve tried every setting I can find on voip-info and nothing seems to change.
Can anyone help me trouble shoot this?