2.6 User Channels ........................................................................................................... 2-10
2.6.1 Registering user channels............................................................................... 2-10
2.6.2 Deleting user channels.................................................................................... 2-12
2.7 FAX Enable/Disable ................................................................................................... 2-12
2.8 Speaker Setting in Off Hook.......................................................................................2-13
3 DSC OVERVIEW ...........................................................................................3-1
3.1 What is DSC? .............................................................................................................. 3-1
3.2 DSC Call ...................................................................................................................... 3-1
3.2.1 Distress alert call and reply ............................................................................... 3-3
3.2.2 Individual call .................................................................................................... 3-4
3.3 Audio Alarms................................................................................................................3-4
3.4 Interpreting Call Displays .............................................................................................3-5
3.4.1 Receive calls..................................................................................................... 3-5
3.4.2 Send calls ......................................................................................................... 3-7
4 DISTRESS OPERATIONS ............................................................................ 4-1
4.1 Sending Distress Alert.................................................................................................. 4-1
4.1.1 Sending distress alert by DISTRESS button, nature of distress not specified....4-1
4.1.2 Sending distress alert by DISTRESS button, nature of distress specified.......... 4-3
4.2 Receiving a Distress Alert ............................................................................................ 4-6
4.2.1 Distress alert received on MF band................................................................... 4-7
4.2.2 Distress alert received on HF band ................................................................... 4-9
4.3 Sending Distress Relay on Behalf of a Ship in Distress.............................................. 4-13
4.3.1 Sending distress relay to coast station ............................................................ 4-13
4.3.2 Sending distress relay to all ships ...................................................................4-16
4.4 Receiving Distress Relay All Ships............................................................................. 4-19
4.5 Receiving Distress Relay from Coast Station ............................................................. 4-19
5 CALLING, RECEIVING..................................................................................5-1
5.1 All Ships Call................................................................................................................5-1
5.1.1 Sending an all ships call.................................................................................... 5-1
5.1.2 Receiving an all ships call ................................................................................. 5-3
5.2 Individual Call............................................................................................................... 5-4
5.2.1 Sending an individual call.................................................................................. 5-4
5.2.2 Receiving an individual call ............................................................................. 5-10
5.3 Group Call..................................................................................................................5-15
5.3.1 Sending a group call .......................................................................................5-15
5.3.2 Receiving a group call..................................................................................... 5-18
5.4 Geographical Area Call .............................................................................................. 5-19
5.4.1 Sending a geographical area call.................................................................... 5-19
5.4.2 Receiving a geographical area call..................................................................5-22
5.5 Neutral Craft Call........................................................................................................ 5-23
5.5.1 Sending a neutral craft call.............................................................................. 5-23
5.5.2 Receiving a neutral craft call ........................................................................... 5-25
5.6 Medical Transport Call ............................................................................................... 5-26
5.6.1 Sending a medical transport call ..................................................................... 5-26
5.6.2 Receiving a medical transport call................................................................... 5-27