Raymarine Ray54 - Manual (Page 51)

Chapter 5: Digital Selective Calling (DSC) 41
➤
To ignore the Group Call:
Press the CLEAR/WX key. The alert tone is muted, the Group Call is
interrupted and the normal screen appears on the display.
➤
To accept the Group Call:
Push the CH knob. The alert tone is muted (if you have not already pressed
another key). The LCD indicates that the channel has been changed to the one
designated by the caller.
If the caller requests that you change to an unsupported working channel
(channel 75, for example) the message INVALID CHANNEL appears on the
LCD. The radio is unable to comply with the channel change request but the
call is registered in the Call Log.
No acknowledgement is sent to the caller. You can establish voice
communications on the channel shown in the LCD by pressing the PTT key.
Notes: (1) DSC Call data is stored in the first available slot in the Call
Log.
(2) Pressing the 16/9 key cancels the channel change request and
tunes the radio to channel 16.
(3) If 5minutes elapse before the Group Call is accepted or
rejected, the radio automatically declines the call and the radio
reverts to the original channel.