CONTENTS

Policy on Intellectual Property Right (IPR)
Annex 1� General purpose equipment characteristics
�1���� General
�2���� Technical format of a call sequence
�3���� Dot pattern and phasing
����������������� 3.4.1���� 200 bits
����������������� 3.4.2� ���20 bits
�4���� Format specifier
�5���� Address
Example:
�6���� Category
�7���� Self-identification
�8���� Messages
����������������� 8.1.1���� Message 1
����������������� 8.1.2���� Message 2
����������������� 8.1.3���� Message 3
����������������� 8.1.4 ����Message 4
������� 8.2���� Distress alert relay, distress alert relay acknowledgement, distress acknowledgement
����������������� 8.2.1���� Message 0
����������������� 8.2.2���� Message 1
����������������� 8.2.4���� Message 3
����������������� 8.2.5��� �Message 4
����������������� 8.3.1���� Message 1
����������������� 8.3.2���� Message 2
����������������� 8.3.3���� Message 3
������� 8.4���� Distress alert relay
������� 8.5���� Test calls
������� 8.6���� Distress self-cancel operation
�9���� End of sequence
10���� Error-check character
11���� Distress alert attempt
12���� Shipborne human machine interface
������ 12.1���� Shipborne aural alarm
������ 12.2���� Inactivity timer
������ 12.3���� Display
������ 12.4���� Maritime mobile service identity
������ 12.5���� Automatic channel switching function on VHF
������ 12.6���� Data interface
������ 12.7���� Position updating
������ 12.8���� Geographic area entry
������ 12.9���� Medical transport and neutral ships and aircraft
����� 12.10���� Group Calls (Ships having common interest)/individual call
13���� Handheld human machine interface
������ 13.1���� Aural alarms
������ 13.2���� Inactivity timer
������ 13.3���� Display
������ 13.4���� MMSI/Maritime Identity
������ 13.5���� Automatic channel switching
14���� Handheld VHF DSC equipment with electronic position fixing systems (Class H)
15���� Position Request operation for Class D, E and H
16���� Man Overboard devices using VHF DSC (Class M)
������ 16.1���� Open and closed loop
������ 16.2���� General requirements
������ 16.3���� Identification number
������ 16.4���� Measures to avoid false alerts
������ 16.5���� Distress self-cancel operation
������ 16.6���� Action on receipt of acknowledgment messages
������ 16.7���� Open loop MOB devices
��� ���16.8���� Closed loop MOB devices
Annex 2� Equipment classes
�1���� Equipment classes only apply to shipborne equipment
Annex 3� User interface for simplified operation of shipborne equipment
�1���� General
�2���� Definitions
�3���� Controls
�4���� Display of messages in plain language
�5���� Transmission of DSC messages
������� 5.1���� DSC message composition features
������� 5.2���� Operational guidance to the operator
������� 5.3���� Defaults
������� 5.4���� Other items
Annex 4� Automated procedures for simplified operation in shipborne equipment
�1���� General
�2���� Definitions
�3���� Tasks of automated procedures
������� 3.1���� Tasks common to all automated procedures handling digital selective calling messages
����������������� 3.1.1���� Handling alarms
����������������� 3.1.2���� Displaying stages of the automated procedure
����������������� 3.1.3���� Tuning the radio
����������������� 3.1.4���� Displaying operator options
����������������� 3.1.5���� Handling digital selective calling messages not pertinent to the active procedure
����������������� 3.1.6���� Displaying warnings
����������������� 3.1.7���� Handling digital selective calling messages containing errors
����������������� 3.1.8���� Transmission of digital selective calling messages
����������������� 3.1.9���� Automated termination
������� 3.2���� Tasks specific to certain automated procedures
����������������� 3.2.1���� Tasks of automated procedures initiated by receiving non‑distress digital selective calling messages
�������� ���������3.2.2���� Tasks of automated procedures initiated by sending a non‑distress digital selective calling message
����������������� 3.2.3���� Tasks of automated procedures initiated by receiving a distress digital selective calling message or sending a distress alert relay on behalf of someone else
����������������� 3.2.4���� Tasks of automated procedures initiated by sending a distress alert attempt
����������������� 3.2.5���� Radiotelephone communications automated procedure
����������������� 3.2.6� ���Other non-digital selective calling automated procedures
������� 3.3���� Tasks concerning multiple automated procedures
����������������� 3.3.1���� Number of simultaneous automated procedures
����������������� 3.3.2���� Sending distress automated procedure
����������������� 3.3.3���� Operator options
����������������� 3.3.4���� Unacknowledged poll, test, or position request automated procedures received on hold
������� 3.4���� Warnings