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・ Busy...
・ Queue...
・ Barred...
・ No operator...
・ Temp no oper...
・ EQP disabled...
・ Unable FRQ...
・ Unable mode...
Rx FRQ
Received frequency of the call
Subject
Message code clarifying communication
contents when sending an urgency call to all
ships.
When sailing in dangerous waters, such as
in areas of political instability, these call
messages are used with the following
information.
・ Neutral ship: In accordance with ITU
resolution 18 (Mob-83), inform all ships
that own ship is of neutral nationality.
・ Medical TRANSP:
that own ship is performing medical
transportation, and is protected under the
1949 Geneva Convention.
Topic
Message codes in an acknowledged message
After sending an individual call, "Unable to
comply" is displayed when the responding
station cannot comply.
Busy
Queued
Station barred
No operator
Temporarily no operator
Equipment disabled
Indicated
frequency
cannot be used
Indicated mode cannot
be used
Inform all ships
Type
Message code indicating the type of the call.
Codes are listed below.
・ Individual call...
・ Individual ACK... Acknowledgement
・ Individual NACK... Negative acknowledgement
・ Group call...
・ GEO area call...
・ All ships call...
・ Distress...
・ Distress ACK...
・ Distress relay...
・ Distress relay ACK... Acknowledgement
・ Distress relay GEO... Area call of distress
Intent
Message code indicating specific content.
Indicates the type of the call for a specific
purpose, not for radiotelephone
communication.
・ Polling...
・ Position RQ...
・ Ship position...
・ Test...
Work FRQ
Message code indicating communication
frequency after a DSC call.
Individual call message
of
individual call message
of individual call message
Group call message
Area call message
Call to all ships
Distress call message
Acknowledgement
of
distress call message
Distress relay message
of
distress relay message
relay message
Polling
Ship position request
Ship position notification
Safety test call
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