extensions_additional.conf [ext-fax] include => ext-fax-custom exten => s,1,Macro(user-callerid,) exten => s,n,Noop(Receiving Fax for: ${FAX_RX_EMAIL} , From: ${CALLERID(all)}) exten => s,n(receivefax),StopPlaytones exten => s,n,ReceiveFAX(${ASTSPOOLDIR}/fax/${UNIQUEID}.tif,f) exten => s,n,ExecIf($[...