User's Manual

SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
eNfusion® HSD-440 Mark 2 Terminal
23-15-30 1-11
3 JUN 10
For more information about using the CMC, refer to the CMC manufacturer’s
documentation.
B. Source Destination Identification (SDI)
The SDI is strapped to indicate the installation type.
C. FWD IDs, ICAO IDs, and IMSI
The HSD-440 Mark 2 Terminal uses two 24-bit IDs called Forward/Return Link Pairs
(FRLPs) for the Swift 64 service: a Forward ID (FWD ID) and a Return ID (RTN ID). The
HSD-440 Mark 2 Terminal reads the FWD ID from the EEPROM and performs a look-up
for the RTN ID. The terminal obtains the second FRLP from the table based on the first
FRLP. For security reasons, each assembly contains an encrypted look-up table with the
whole addressing space assigned to the product by Inmarsat. To minimize the risk of
unauthorized use of its contents, the table is not accessible to the user.
The ISN consists of the type approval number and the FWD ID address. Each FRLP is
associated with Inmarsat Mobile Numbers (IMNs), which are the numbers that a user
dials from the ground to reach a terminal on an aircraft. There is a unique IMN for each
of the service types (for example, data or voice).
The HSD-440 Mark 2 Terminal provides IMEI and IMSI for SBB. The IMEI identifies the
equipment type to the network . The equipment types identity is hard coded in the
equipment. The IMSI identifies the subscriber. This identity is contained within the USIM
housed in the SCM.
The HSD-440 Mark 2 Terminal provides two ways to define the ICAO ID—by strapping
or over the secondary IRS bus. You can select strapping or the IRS bus as the source
of the ICAO ID by the secure ORT parameter ICAO CODE SOURCE.
NOTE: If the ICAO address source is set to the IRS bus, the secondary IRS type ORT
parameter must be set to AES ID.
The 24-bit ICAO ID forms part of the Inmarsat Serial Number (ISN).
The HSD-440 Mark 2 Terminal uses the International Mobile Subscriber Identity (IMSI)
number for access to SBB services. The IMSI is stored in the terminal’s SIM card, and
is printed on the SCM. Register your IMSI with your service provider to begin using SBB
services.
D. Weight-On-Wheel (WOW) Pin Wiring
WOW discretes indicate when an aircraft is on the ground or in the air, and are used for
flight data-logging purposes. Since data that the aircraft is airborne is supplied to the
HSD-440 Mark 2 Terminal by other equipment, this information from the discretes is not
required. However, EMS Aviation recommends wiring the WOW discretes if you plan to
load software while the HSD-440 Mark 2 Terminal is installed in the aircraft.
WOW is only used to determine aircraft on-ground status if the Inertial Reference System
(IRS) has no valid data, and the CMC is not installed, or if the CMC is not providing valid
data.
Note 40 of the ARINC 741 specification documentation defines the requirement for WOW
data.