ADTRAN TSU 120e - Manual (Page 41)

Chapter 3. Operation
61202129L1-1 TSU 120 User Manual 3-3
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Figure 3-1. TSU 120 Front Panel Layout
No Description Action/Status
1 LCD Window Displays menu items and messages in 2 lines by 16
characters
2 Up and Down Arrows Scroll through and activate the submenu items available in
the current menu. The flashing cursor indicates the active
parameter
3 Enter Key Selects active item
4 Alarm Quick access to the active display menus
5 Clear Clears data/results fields
6 Shift Provides access to special function keys
7 OK (DSU/DSX Status) Operation is in normal mode with no detected errors
8 Test (DSU/DSX Status) Active when the module is in test mode
9 Alarm (DSU/DSX Status) Active when an alarm condition has been detected
10 OK (Module Status) Operation is in normal mode with no detected errors
11 Test (Module Status) Active when the module is in test mode
12 Alarm (Module Status) Active when an alarm condition has been detected
13 Cancel Stops current activity and returns to the previous menu
14 Copy Copies last data entered into the current DS0
15 OK (CSU Status) Operation is in normal mode with no detected errors
16 TEST (CSU Status) Active when the network interface is in test mode
17 Error (CSU Status) Indicates errors such as BPV, OOF or CRC
18 Home Returns to the main menu
19 Alarm (CSU Status) Active when an alarm condition has been detected on the
network interface