R **ON A/C 106-149, 151-199, 201-299, 301-399, 401-499,
 (6) ATSU AOC Software
 (a) Characteristics This software is provided by a set of disks. It complies with ARINC 615 Specification.
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 7. Operation
_________
 A. System Configuration
 (1) ATSU A/C INTERFACE software loading The loading procedure is ensured by the " Boot software" included in the ATSU hardware case. The ATSU is first to be loaded with the A/C INTERFACE software which takes A/C configuration and adaptation to different system interfaces into account. It contains namely air/ground communication services and the router function. The adaptation to the A/C configuration is also ensured through pin programming acquisition, either from hard ATSU pin programming, or from pin programming information received from CFDIU (configuration label).
 NOTE : The ATSU is automatically reseted after a software loading
____ operation through an internal mechanism. The LRU IDENTIFICATION function from the BITE enables to display the software version reference in order to check the correct uploading.

R **ON A/C 062-099, 106-149, 151-156, 159-199, 201-299, 301-399, 401-499,
R Post SB 46-1013 For A/C 062-099,151-156,201-209,
 (2)
 ATSU Configuration software loading The ATSU Configuration software is uploaded in the ATSU. It consists of a database containing routing policies definitions and configuration elements. This database enables the manufacturer to modify configuration parameters (flexibility improvement).

 (3)
 Loading of ATSU router parameters software The ATSU router parameters software is uploaded in the ATSU. It contains the standard DSP world map database: media configuration tables and VHF world map. This database gives the list of VHF datalink service providers available in each geographical area: automatic selection of VHF frequency depending on the aircraft position as well as the scan mask entered by the airline.

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 (4) AOC software and database loading In Pre-FANS configuration, the AOC application software and the associated database are uploaded in the ATSU. The AOC software package contains the specific airline datalink applications. Remote AOC applications are also embedded in peripherals which some of them are optional such as DMU, Cabin Terminals (remote AOC peripherals).
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 B. ATSU DATALINK applications
 Three menus are available:
 (1) Air/Ground Communication Menu
 (Ref. Fig. 014)
 The COMM MENU gives access to:

 -
the COMM INIT page to initialize the datalink communications

 -
the VHF3 DATA MODE page to select the Data mode and the VDR3 frequency

 -
the VHF3 VOICE DIRECTORY page to select the Voice mode and the VDR3 frequency

 -
the COMM STATUS page to display the availability of the VHF3 and SATCOM networks

 -
the COMPANY CALL page to display the message content and to validate a VOICE-GO-AHEAD

 -
the MAINTENANCE page which comprises a TEST part and an AUDIT part These menus are developped in AMM 46-24-00, P. Block 001.

R **ON A/C 106-149, 151-156, 159-199, 201-299, 301-399, 401-499,
 Post SB 46-1013 For A/C 151-156,201-209,
 B. ATSU DATALINK applications
 Three menus are available:
 (1) Air/Ground Communication Menu
 (Ref. Fig. 014A)
 The COMM MENU gives access to:

 -
the COMM CONFIG page to initialize the datalink communications

 -
the VHF3 DATA MODE page to select the Data mode and the VDR3 frequency

 -
the VHF3 VOICE DIRECTORY page to select the Voice mode and the VDR3 frequency

 -
the COMM STATUS page to display the availability of the VHF3 and SATCOM networks

 -
the MAINTENANCE page which comprises a TEST part, a STATISTICS part

 and an AUDIT part These menus are developped in AMM 46-24-00, P. Block 001.
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 ATIMS - Access to COMM MENU R Figure 014
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 ATIMS - Access to COMM MENU Page
 Figure 014A

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