Epson Multi-mode Data Controller MFJ-1278B - Manual (Page 267)

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS
RFE ON/OFF Mode: AMTOR Default: OFF
Parameters:
ON
Continous retries mode enabled
OFF
Continous retries mode disables.
RFE is the Retry ForEver parameter. When the RFE command is ON, a Mode A call will
continue until either a successful link is established, or the "QRT" or "R" command is issued.
RINV ON/OFF
Mode: AMTOR Default: OFF
Parameters:
ON
Inverting of incoming Amtor data results
OFF
Incoming Amtor data is not inverted.
The RINV command controls whether the incoming received signal is inverted before
detection/processing. It is similar to RXINVERT in RTTY/ASCII mode.