User's Manual

Iridium SIM Card Registration
The Iridium network is based on the international Global System for Mobile
communications (GSM) standard and architecture. With any GSM cellular device, all Iridium
transceivers capable of voice require a Subscriber Identity Module (SIM) associated with the
mobile device. Though the SIM can be used for many functions, such as restricting call access or
to store information, its primary function is to assign the telephone number to the L-3 Satellite
Data Unit (SDU) transceiver. An exception is the Iridium Short Burst Data (SBD) modem, which
operates solely from an IMEI number assigned to each modem.
Often customers or installers are not familiar with the need to activate the SIM and IMEI
for service over the Iridium network prior to testing or use of the system. You may select any
valid Iridium Service provider. Our recommendation is to contact our partner, FLYHT Aerospace
Solutions Ltd., complete the following activation form, and send to FLYHT for processing.
There are two types of voice service plans to choose from:
• Air Traffic Service (ATS)
The operator will be able to prioritize calls to and from the cockpit and pre-empt
a lower priority call with a higher priority incoming call. The calls from ground-to-
air have additional security procedures; the user will be required to have a User
ID, PIN, plane ID, and set the call priority.
• Non-ATS
This service does not have call prioritization and the ground-to-air calls only
require the phone number of the SIM card to place a call.
You may need the following information when activating a SIM card:
• Tail Number
• IMEI Voice Modem Number
• Avionics MFR – L-3/FLYHT
• IMEI Data Modem Number
• Avionics Model - AFIRS 228S Satellite Data Unit
• Voice Modem Model 9523
• Data Modem Model 9602