L3 Technologies AFIRS228S ユーザーズマニュアル
AFIRS 228S Iridium Global Communications System Installation Manual
16 July 2014
L-3 Aviation Recorders Proprietary
Page 12
165E5733-00 Rev. 03
2. DESCRIPTION AND OPERATION
This section describes the system operation and architecture.
2.1 System Overview
The Iridium SATCOM System provides multiple voice and data communications functions in the
aircraft. The Automated Flight Information Reporting System (AFIRS) provides a satellite voice and
data communications (SATCOM) link with the Public Switched Telephone Network (PSTN) via the
Iridium
aircraft. The Automated Flight Information Reporting System (AFIRS) provides a satellite voice and
data communications (SATCOM) link with the Public Switched Telephone Network (PSTN) via the
Iridium
®
satellite network. The system uses a standard ARINC 741/761 SATCOM interface to the flight
crew’s Audio Integrating System and ARINC 739A Multi-Purpose Control and Display Units (MCDUs)
in the cockpit.
in the cockpit.
Figure 2-1 –Iridium SATCOM System Operational Concept
The Iridium SATCOM System provides a dedicated safety-services data channel with the capability to
send and receive standard ACARS messages between the aircraft’s Air Traffic Service Unit (ATSU)
and a safety-services certified terrestrial service provider.
send and receive standard ACARS messages between the aircraft’s Air Traffic Service Unit (ATSU)
and a safety-services certified terrestrial service provider.