Example 1 - Making a call from a landline phone in the United States terminating to an Iridium satellite phone. It does not matter where the satellite phone is located, the dialing is the same. From the landline phone, dial: 011 8816 XXX XXXXX
011, International Direct Dial (IDD) access code for United States/8816 XXX XXXXX, the MSISDN

Example 2 - Making a call from a landline phone outside of the United States terminating to an Iridium satellite phone. It does not matter where the ISU is located, the dialing pattern is the same.
From the landline phone, (i.e. France) dial: 00 8816 XXX XXXXX

00, International Direct Dial (IDD) access code for France / 8816 XXX XXXXX, the MSISDN.

Example 3 - Making a call from the Iridium satellite phone (does not matter where the satellite phone is located) to a landline phone located in the United States.
From the satellite phone, dial: 00 1 602-752-XXXX
00, for all outbound calls from the satellite phone/ 1, United States country code/ 602, area code/752-XXXX, actual phone number.

Example 4 - Making a call from an Iridium satellite phone (does not matter where the satellite phone is located) to a landline phone located in another country.
From the satellite phone, dial: 00 CC XXXXXX
00, for all outbound calls from satellite phone/CC, country code/XXXXXX, actual number.

It is not always possible to call an Iridium telephone from every PSTN around the world. Some telecommunication companies have not yet enabled their gateways to accommodate Iridium services. For example users cannot dial from Deutsche telecomm in Germany directly to an Iridium telephone because the switch to the Iridium country code is not yet activated. AST have a router system to address such problems.