My Setup: Elastix 2.03 (1) Openvox A400P with 2FXO's and 1 FXS, using Elastix as a PBX for (2) PSTN lines. (4) Polycom 331 Sip phones. I have a slight feedback/echo in the handset. I tried fxotune and it results in an eror. Below are the commands that I issued. # amportal stop # fxotune -i 4 It tells me it is done tuning module 1, then begins to tune 2, after that it gives an error that is "unable to tune 1 devices even though those devices are present." Maybe I just need to use dahdi_monitor? Is there a writeup on how to do this anywhere?