Furuno RC-1500-1T - Manual (Page 118)

4-42
Unable acknowledge
1) The audio alarm sounds; press the [CANCEL] or [ENT] key to silence the alarm. The
display shown in the figure below appears.
* Received message *
JUL-23-1999-23:01 ECC: OK
UNABLE ACKNOWLEDGE
FROM COAST : 001234567
TEL NO. : 1234567890123456
BUSY
GO TO ALL VIEW
2) Press the [CANCEL] key to return to the DSC standby screen.
No response! Try calling again?
Re-send call: Press the [ENT] key followed by the [CALL] key.
Cancel call: Press the [CANCEL] key to return to the DSC standby screen.