All calls to Iridium phones are international calls.
If your phone allows international calls:
dial the Country code of the country you are calling from
from the USA: 011 88162345lastfour for the Cockpit.
from the USA: 011 88162345lastfour for the Cabin.
–OR– two stage dialing if that does not work
From inside USA/Canada 1.480.768.2500 &WaitPromt 88162345lastfour
From outside USA/Canada 1.011.480.768.2500 &WaitPromt 88162345lastfour
AircellAxxesIIQuickCallingGuide042010
remember to use AIRINC 429 label Label 204 for Baro Corrected altitude
CHECK SLIDE 417 for Dial Prefixes.