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COMSPHERE 3900 Series Modems
3-6 November 1996 3910-A2-GN32-30
The SDCP LEDs are listed and described in Table 3-2.
Table 3-2
SDCP LEDs
Label Color Indicates
OK green Power is ON and the modem is capable of operating.
Alarm red The modem has detected a problem with its operation. For example, the modem
failed a self-test.
BckUp yellow The modem, originally configured for leased-line operation, is now operating on
dial networks in a Dial Backup mode.
Test yellow The modem is involved in a test. Normal operation is not possible.
EC green The modem is in Error Control mode.
Diagnostic Control Panel Operation
The 391x Series modem’s diagnostic control panel (DCP) is the user interface to all functions used
to configure and control the modem. In addition to the status LEDs, this interface includes the
liquid crystal display (LCD) and keypad (Figure 3-3).
F1
Leased:19.2
Status Configure
F2
F3
LCD
T
O
P L
INE
HIDDEN CHOICE
INDICATOR
RETURNS
DISPLA
Y T
O
TOP-LEVEL
MENU
RIGHT
SCROLL
KEY
MOVES
UP ONE
LEVE
L F
ROM
CURRENT
DISPLAY
FUNCTION KEYS
LCD BOTTO
M L
INE
LEFT
SCROLL
KEY
Figure 3-3. 391x Series LCD and Keypad
LCD Display
The LCD consists of a top line and bottom line, with each displaying a maximum of
16 characters at a time. If more information is available on the LCD than what is currently
displayed, an indicator appears in the top right or bottom right-hand corner of the LCD. Use the
or key to scroll in the indicated direction to display more selections onto the LCD.