Furuno FM-8800D Operator's Manual page 53

4. Choose ABLE and press the ENT key. The display changes as shown below.
5. Press the CALL key more than three seconds to transmit the ACK BQ. The
display changes to the standby display with a channel specified.
4) Manually acknowledging a coast or ship call with "UNABLE."
1. When the equipment is set up with manual acknowledge and an individual call
is received, the alarm sounds and the display shows the message "Individual
request call received."
2. Press the CANCEL key to silence the alarm. The following display appears.
3. DSC OPERATION FOR NON-DISTRESS CASES
** Send Message **
SHIP ACK
TO : 123456789
ROUTINE
TCmd1 : SIMPLEX TP
TCmd2 : NO INFO
CH : 08
PRESS CALL TO SEND
Individual request
call received.
FROM : 123456789
ROUTINE
TCmd1 : SIMPLEX TP
TCmd2 : NO INFO
CH : 08
CANCEL ALARM
** Received Message **
APR01/ 04 12 : 34
SHIP CALL
FROM : 123456789
ROUTINE
TCmd1 : SIMPLEX TP
TCmd2 : NO INFO
CH : 08
PRESS ENT TO ACK.
ECC : OK
3-9