I recently added a TDM410 card into our pbx. I was able to add a MagicJack line to it by configuring a couple of dahdi cfg files. At this point I have a bad Echo. I want to to add another FXS line from an additional MagicJack dongle. I also have a Cisco IP phone that I need to configure it for one of the extensions of the PBX.
So the help i need is:
1) Proper configuration of the Echo Cancellation
2) Add another FXS line.
3) Configure Cisco IP Phone 7960