COMSPHERE 3800Plus Modems
4-4 October 1998 3980-A2-GB30-40
The SDCP LEDs are listed and described in Table 4-2.
Table 4-2
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 Modem is in Error Control
mode.
DCP Operation
The 3800Plus modem’s diagnostic control panel (DCP)
is the user interface to all functions used to configure and
control the modem. This interface includes the status
light-emitting diodes (LEDs), and a 2-line, 32-character
liquid crystal display (LCD) and keypad (Figure 4-3).
Use the DCP to display the following kinds of
information:
•Operational status
•Configuration options
•DCP entry displays
•Remote modem access
F1
Idle:28.8
Call_Setup
F2 F3
TOP
HIDDEN
INDICATORS RETURNS
DISPLAY TO
TOP-LEVEL
MENU
RIGHT
SCROLL
KEY
MOVES UP
ONE LEVEL
FROM CURRENT
FUNCTION KEYS
LCD BOTTOM LINE
LEFT
SCROLL
KEY
LINE
CHOICE
LCD
DISPLAY
Figure 4-3. 3800
Plus
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
additional information appears on the LCD than what is
currently displayed, a hidden choice indicator (< or
or >) appears in the upper right-hand corner of the LCD.
Use the or key to scroll in the indicated direction
to display more selections onto the LCD.

Hidden Choice Indicators

The Hidden Choice Indicators serve as an alert that
other selections are available besides what is currently
displayed on the LCD. These indicators appear as one of
the following symbols:
Right Scroll Indicator
>
The right scroll indicator displays when more choices
are available to the right of what is currently displayed on
the LCD.