Description Of Call Screens; Rx Calls - Furuno FM-8900S Operator's Manual

Alarm
Ordinary The following sessions are received:
alarm • Safety: all ships, individual, position, or test.
• Routine: individual, group, polling, or PSTN.
Ordinary The following sessions are received then acknowledged:
ACK • Safety: individual ACK, position ACK, test ACK.
alarm • Routine: individual ACK.
The sessions for delayed ACK are received.
Self ter- • There are the related sessions for call messages.
minating • The related sessions for ACK messages were already
alarm acknowledged.
• Sending the individual unable auto ACK or PSTN un-
able auto ACK.
• The following sessions are received:
relay area (duplicate), relay all (duplicate), or PSTN
end of call ACK.
2.4

Description of Call Screens

This section provides the information necessary for interpreting the receive and send
call screens.
2.4.1

RX calls

Below are sample distress relay and individual RX call screens. The contents of other
types of RX calls are similar to that of the individual call.
Distress relay
Speaker icon
Call type
ID No. (MMSI)
of ship in
distress
Nature of
distress
Communication
mode and
suggested
channel
Individual RX call
Speaker icon
Call type
Communication
mode
ID No. (MMSI)
of ship
sending this
message
When
ACCEPT
2. DSC OVERVIEW
Frequency (interval)
The following set is repeated:
750 Hz (50 ms) and 650 Hz
(50 ms); ten times  silent
(2000 ms); once
The following set is repeated:
750 Hz (50 ms) and 650 Hz
(50 ms); ten times  silent
(2000 ms); once
1300 Hz (100 ms)  silent
(300 ms)  1300 Hz (100 ms)
 silent (50 ms)  1300 Hz
(100 ms)
Working channel
to use
Elapsed time since
distress alert received
Position of ship
in distress
Available user options
Session in progress
Working channel
to use
Elapsed time since
call received
Appears when ECC
is NG.
Available user options
Session in progress
2-3