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How can I Dial a GSR 56 Iridium Phone from a Landline in the US?
The Iridium phone number is an international number in the phone system with the country code of 8816.
To Call a GSR 56 Iridium Phone Number from a US Landline:
Ensure the phone line you are using has international calling.
Dial the international exit code: 011 (for US). (Some smart phones can use the "+" symbol for the international exit code.)
Dial the Iridium country code: 8816.
Dial the Iridium phone number: xxxx-xxxx.
The complete number would thus be: 011-8816-xxxx-xxxx.