apologies for not replying sooner, I was despatched to the wilds of Aberdeen!
The zapata.conf is below, I did try various combinations of echocancel, and echotraining, also from voip-wiki and by using the gain meter I tried some rxgain, txgain values.
As an aside I don’t think faxdetect=no, has any effect!
rxwink=300 ; Atlas seems to use long (250ms) winks
; Whether or not to do distinctive ring detection on FXO lines
;Include AMP configs
;Include genzaptelconf configs