Raymarine RAY230E Owner's Handbook Manual page 57

Operations
OR
Manually input the phone number with the numeric keypad, then press
the ENT key.
5) Press ENT again. A prompt appears on the display instructing you to
press the PTT switch.
6) Press PTT to transmit. If PTT is not pressed within 15 seconds of the
prompt appearing, operation returns to the state before the call.
ENT
Use SQ UP/DOWN key to scroll through
list of MMSI nicknames. Press ENT when
desired selection is displayed
ENT
Flashing
ENT
With manual input, MMSI
number would be displayed
ENT
ENT
numeric
keypad
Flashing
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