You receive a TELEX with the sender’s I.D....

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Question 1 of 20kRRmylJ8INvU4aJO9gcp

You receive a TELEX with the sender’s I.D. of 433863491. What type of terminal sent this message to your vessel?

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Question 1 of 20

kRRmylJ8INvU4aJO9gcp

You receive a TELEX with the sender’s I.D. of 433863491. What type of terminal sent this message to your vessel?

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🔍 Key Concepts

• Inmarsat mobile numbers (IMN) structure and what they identify • Difference between a ship earth station telex ID and a land-based TELEX number • Which Inmarsat systems are associated with narrow-band telex/data vs high-speed voice/IP

💭 Think About

• Look at the number 433863491: does it look more like a traditional public TELEX network number or an Inmarsat mobile number assigned to a terminal? • Which Inmarsat system is historically linked to store-and-forward telex-style messaging rather than broadband IP or primarily voice services? • Among the Inmarsat options listed, which ones are mainly used for high-speed data/voice vs simple text/telex communications?

✅ Before You Answer

• Verify which Inmarsat service uses 9-digit Inmarsat Mobile Numbers (IMN) for message addressing • Check which system is commonly associated with shipboard telex via satellite • Confirm which options (if any) are broadband IP/voice terminals, which are less likely to be used as a classic TELEX endpoint

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Question 1 of 20kRRmylJ8INvU4aJO9gcp

You receive a TELEX with the sender’s I.D. of 433863491. What type of terminal sent this message to your vessel?

Back

Question 1 of 20

kRRmylJ8INvU4aJO9gcp

You receive a TELEX with the sender’s I.D. of 433863491. What type of terminal sent this message to your vessel?

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

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