I have terrible echo when calls come in or go out on my POTS lines. I have a TDM400P with four FXO boards. I believe that I have enabled echo cancellation, but it doesn’t seem to do anything.
I get the following error in the logs when a call comes in:
chan_dahdi.c: Unable to enable echo cancellation on channel 2 (No such device)
It does not matter which channel.
If anyone could help, I would appreciate it.
My chan_dahdi.conf file is as follows:
; hardware channels
; default for channels inherited to all channels
signaling=fxs_ks ; FXO channels use FXS signalling
context=incoming_ofc ; standard office line (inherited to lines 1, 2 & 3)
channel => 1
channel => 2
channel => 3
context=incoming_mkt ; marketing line
channel => 4