🔍 Key Concepts

• Inmarsat-C login procedure and what changes after a successful network login • Difference between scheduled MSI broadcasts (like EGC SafetyNET) and unscheduled MSI broadcasts • What types of ship–to–shore company communications require the terminal to be fully logged in

💭 Think About

• Think about what the terminal is already able to RECEIVE just from synchronization with the NCS Common Channel, even before full login. • Which of the listed functions would require the network to know the ship’s identity, subscription/area settings, and billing details? • Among the options, separate "broadcast safety information" from "individual or routine commercial communications" and see which category needs successful login.

✅ Before You Answer

• Verify which Inmarsat-C functions are global broadcasts that go to all terminals in an ocean region, regardless of login status. • Check which services require addressing a specific ship’s Inmarsat number or Telex number, which depends on successful login. • Confirm from Inmarsat-C documentation whether Emergency or Distress-related MSI alerts have priority and can be received without prior login.