DCP Operation
3-5
3910-A2-GN32-40
September 1998
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 TOP LINE
HIDDEN CHOICE
INDICATOR
RETURNS
DISPLAY TO
TOP-LEVEL
MENU
RIGHT
SCROLL
KEY
MOVES
UP ONE
LEVEL FROM
CURRENT
DISPLAY
FUNCTION KEYS
LCD BOTTOM LINE
LEFT
SCROLL
KEY
Figure 3-3. 391x Series LCD and Keypad
