Airbus Iridium SATCOM System165E5733-00 L-3 Aviation Recorders ProprietaryIssue, Rev. 0221 January 2014Page 537.1 Accessing the Maintenance User Interface (MUI)You access the AFIRS MUI by connecting an Ethernet cable to the Maintenance Port of the SDU.Alternatively, as described in section 6.9, Ethernet Port 1A can be used.Also, if an Electronic Flight Bag (EFB) with a supported web browser installed is connected to one ofthe rear Ethernet port connections, the EFB can be used as an AFIRS maintenance terminal and alaptop is not required.To access the Maintenance User Interface (MUI):1. Connect an Ethernet cable either to the Maintenance Port via the front panel access door ofthe SDU or through the rear Ethernet Port 1A connection. Note that the Airbus IridiumSATCOM System power may be on or off.2. Connect the other end of the Ethernet cable to a laptop that is running a web browser.Note:It is recommended to use Mozilla Firefox ® as the Internet browser with the SDU. The laptopnetwork adapter must be set to the same subnet mask as the SDU (i.e. 255.255.255.0).3. If not already powered, apply power to the SDU.4. Confirm that the green link light (adjacent to Maintenance Port RJ45 connector) is illuminated,either steady or flashing (a flashing link light indicates that data is being transmitted).5. Open a web browser on the laptop. In the Address bar, type one of the two following IPaddresses depending on the connection point:192.168.128.1 (if connecting to the Maintenance Port at the front panel of the SDU –see Figure 7-1.)10.0.0.238 (if connecting to the rear Ethernet Port 1A. – see Figure 6-6).Note:Before opening the Web page, clear the cache of the Web browser or Ctrl+F5 and reopen theWeb page.The Airbus Iridium SATCOM System Home page appears with the General tab informationdisplayed – see Figure 7-2 – Home Page – General Tab.