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412. Which of the following would be a valid sequence to request an F77 automatically dialed ship-ship voice call to an F77 terminal on a vessel tracking the IOR satellite?
The correct sequence is 00870763240864# because it uses the Inmarsat country code 870 and the Fleet 77 IOR region code 763, which are required for automatically dialed F77 ship-to-ship voice calls.
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