Paradyne 317x E1 manual 4. Test Jacks, 5. E1 DSU/CSU LEDs

ACCULINK 317x E1 DSU/CSU

The scroll keys ( and ) serve one of two functions, depending on whether a menu screen or a data entry screen appears on the front panel.

For data entry screens, the key scrolls one

character to the left while the key scrolls one character to the right.

For menu screens, the key scrolls to the previous

menu choice while the key scrolls to the next menu choice.

If a choice is available to the left of the screen, the character ← appears on the top line. If a choice is available to the right of the screen, the → character appears on the top line. If choices are available to both the right and the left of the screen, two arrows appear ( ). The arrows indicate that you must use the scroll keys to bring the additional options onto the screen.

F1 F2 F3

Test Jacks

Six test jacks are located on the front panel

(Figure 3-4). These are described in the Test Jacks section in Chapter 4, Maintenance.

Figure 3-4. Test Jacks

LEDs

There are twelve LEDs on the E1 DSU/CSU front panel. The five LEDs on the right (Figure 3-5) are shared between the DTE Drop/Insert port and the data ports. Refer to the Selecting the DTE Drop/Insert or Data Port for LED Display section later in this chapter to choose which port's status the LEDs display.

Figure 3-5. E1 DSU/CSU LEDs

A green LED indicates normal operation. A yellow LED indicates a warning (for the DTE Drop/Insert port) or activity (for the data ports). Conditions are sampled every tenth of a second.

The twelve front panel LEDs are grouped into four sections to indicate the status of the:

•System (Table 3-1)

•NETWORK interface (Table 3-2)

•DTE Drop/Insert Port (Table 3-3)

•Data Ports (Table 3-4)

3-4 December 1996 3170-A2-GB20-20