*
The satellite in use.
If the system is logged off, select the LSK adjacent to *AUTO LOG-ON to make the system automatically log-on to a satellite and GES. You may also push the LSK adjacent to GES-SEL to show a list of ground earth stations. From this screen, you may select a GES and log-on.
An airplane can only log-on to one ground station at a time. However, the airplane does not have to get all communication services from that ground station. The airplane may use other links with other ground stations. A typical multi-ground station operation permits an airplane to do these functions:
*
Keep data links with the airline operations base
*
Talk to an air traffic control (ATC) center through the log-on ground station
*
Operate passenger communications through a different ground station.
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SATCOM SYSTEM -LOG ON
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SATCOM SYSTEM -VOICE OPERATIONS
General
The flight crew uses the control display units (CDUs) and audio control panels (ACPs) to control the voice mode of the SATCOM system.
Outgoing Calls
Push a SATCOM transmitter select switch on the ACP. Adjust the volume with the related SAT receiver control.
Push the MENU key on the CDU and then push the line select key (LSK) adjacent to <SAT. The SATCOM MAIN MENU shows on the CDU.
Push the LSK adjacent to DIRECTORY to show the categories of numbers (1 through 4). Push the adjacent LSK to show the list of numbers in the category. Push the LSK next to the name you want to call. The SATCOM system automatically starts the call and returns to the SATCOM MAIN MENU. When the call is connected to the called station, the related SAT CALL light comes on, the SELCAL message shows on EICAS, and you hear the ringback tone in the headset.
When the called party answers, you can push any MIC/ interphone switch and speak into the microphone. You do not need to release the MIC/interphone switch to listen. When you finish the call, push the LSK adjacent to END CALL from the SATCOM-MAIN MENU.
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SATCOM SYSTEM -DATA OPERATIONS
Outbound Datalink
Push the COMM button on the display select panel (DSP) to access the flight deck communication function (FDCF). The communication page shows on the selected display unit.
Use the cursor control device (CCD) to select the MANAGER menu from the main menu. Select the ACARS menu. Use the ACARS menu to select SATCOM for downlink. Use the control display unit (CDU) keyboard and the FDCF COMPANY menu to send a free text message.
Inbound Data link
When the airplane receives a data message through SATCOM, a chime sounds and a COMM or PRINTER message shows on the EICAS display. The COMM EICAS message tells you to read the message on the communication page under the NEW MESSAGES menu. The PRINTER message tells you the message is on the flight deck printer.
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SATCOM SYSTEM -BITE
General
The SATCOM system has interfaces with the central maintenance computer system (CMCS) through the airplane information management system (AIMS). Use the maintenance access terminal (MAT) or the control display unit (CDU) to do a test and to review SATCOM test data.
Built-In Test Equipment (BITE)
The SATCOM system has BITE to monitor line replaceable units (LRUs). At power-up, BITE automatically does a test of the system components. Use the MAT or SATCOM MAINTENANCE screen on the CDU to start a manual BITE test.
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