How to call Inmarsat Satellite from the USA or from Canada:

dial 011 + 870 + phone number

Calling from another country?

Calling Inmarsat satellite phones from the United States explained:

011 - US exit code; dial first for international calls made from the USA or Canada
870 - Country Code for the Inmarsat network
Phone Number - 9 digits
US to Inmarsat international dialing format : 011 870 ??? ??? ???