Using The Keyboard; The Main Menu - General DataComm 551 Operating And Installation Instructions

OPERATION

Using the Keyboard

The Main Menu

3-10
• current menu or screen name
• system date and time
• status line
• CSU address number
The status line reflects the status of the front panel indicators and
switches, and provides additional information. For front panel switches,
a period (.) indicates that the switch is disengaged, and an X indicates
that it is engaged. For front panel indicators, a period indicates normal
status, and an X indicates abnormal status. The meanings of the status
line indicators are described in Table 3-1.
To select any menu, screen or function displayed on the current screen,
simply press the letter shown to left of its name. To select the DS1 DIAG-
NOSTICS menu from the MAIN MENU, for example, press D. The CSU
requests confirmation of the entry by displaying the message Are You
Sure? (Y/N) at the bottom of the screen. Press Y to confirm the entry
and continue, or press N to stop. In all menus and screens, keyboard en-
tries are not case-sensitive: it does not matter whether the Supervisory
terminal is in lower-case or upper-case mode (all entries are converted to
upper-case). If you press an invalid key (one that is not used in the cur-
rent screen) or enter a value that is out of range, the terminal beeps and
an error message is displayed at the bottom of the screen. Try a valid en-
try.
To return to the previous menu, press E (exit) or <ESC> (escape).
The MAIN MENU (see Figure 3-6) provides access to the DS1 and DS0
DIAGNOSTICS menus and the CSU CONFIGURATION and MAINTE-
NANCE screens.
In Unframed Mode, the DS0 Diagnostics selection is
removed from the MAIN MENU (the entire band-
width is used for customer payload, so the signal is not
channelized, DS0s do not exist, and DS0-level diagnos-
tics do not apply).
NOTE