User's Manual

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5.3 RECEIVING DSC CALLS
Five types of DSC calls can be received from vessels within range at various
priority levels:
DISTRESS - see Chapter 5.
ALL SHIPS - Urgency, or Safety priority (see Section 5.3.1)
INDIVIDUAL - Urgency, Safety, or Routine priority (see Section 5.3.2)
GROUP - Routine priority only (see Section 5.3.3)
In addition to the audible alert, the telephone icon will flash on the LCD.
5.3.1 RECEIVING AN ALL SHIPS CALL (ALL SHIPS)
1. When you receive notification of an ALL SHIPS call, press
any key to cancel the alert. The VHF 7100 automatically
selects CH16.
The priority level and the user MMSID are displayed on
the LCD. If the VHF 7100 recognises the user MMSID as
one of your buddies, the buddy’s name is displayed in
place of the user MMSID.
2. You do not need to send an acknowledgement. If necessary, press PTT to
initiate voice contact on CH16 and then switch to a working channel.
The call data is stored in the Call Log (see Section 5.2.7).
5.3.2 RECEIVING AN INDIVIDUAL CALL (INDIVIDUAL)
1. When you receive notification of an INDIVIDUAL call,
press any key to cancel the alert. The VHF 7100
automatically selects the channel designated in the
incoming call.
In the example, an individual routine call has selected
CH72. However, safety and urgency priority level calls
always select CH16.
The priority level and the user MMSID are displayed on the LCD. If the VHF
7100 recognises the user MMSID as one of your buddies, the buddy’s name
is displayed in place of the user MMSID.
2. The VHF 7100 prompts you to press ENT to acknowledge the incoming call
(PRESS ENTER TO ACK BACK!).
3. Press ENT, then the caller should respond to your acknowledgement by
making voice contact on the designated channel. If this does not happen,
you can press PTT to initiate voice contact instead.
The call data is stored in the Call Log (see Section 5.2.7).