AT&T 555-230-223 manual Faceplate panel LCD

Maintenance

Table 4-2. System States (continued)

faceplate panel LCD

OS

INST

3.Read/Write functions — Lists byte-, word-, and long- address values.

4.Additional tests — Lists diagnostic tests. These are also shown on the faceplate panel LCD

5.Automatic boot — Brings up the system from a shutdown mode, showing initialization operations and tests.

6.Preempt automatic boot — Ensures that all initialization operations and tests will pass.

7.Manual boot — Allows a boot to be done manually from the faceplate panel. Shows initialization operations and tests.

8.Board commands — Provides board reset or shut down options.

9.Quit and automatically boot — Allows the technician to leave the command menu. Automatically boots the system.

Displayed only when a TSC engineer interrupts the normal initialization sequence. The operating system remains on-line, but the DEFINITY LAN Gateway software is off-line. Used to perform system diagnostics and repair using the factory or supplied system operation tools. The customer does not have access to this state.

Displayed during an upgrade or installation. Goes into this state when the technician gets into the command mode by pressing

CTRL C twice and then preempting an automatic boot from the command menu.

Figure 4-3, System Initialization and Shutdown Flow, shows the steps the DEFINITY LAN Gateway system automatically takes from a dead state to full operation. It also shows the states that can be entered whenever errors occur, or when the technician manually changes states using the faceplate panel or with the maintenance screens located in Chapter 3. Note that the states are shown as they appear on the faceplate panel LCD.

4-8Issue 1 January 1996