NEC SL2100 Hardware Manual page 91

ISSUE 4.0
3.4.7 LED Indication
A Status LED is available only for the base board (082U, 008U, 000U) and the daughter board
(3COIDB, 1PRIDB) does not have the status LED, therefore a Status LED on base board is used in
common about LED indication related to the daughter board.
082U-B1
The order of priority (No.1 ~ 8) is set up to each status and when more than one different status are
occurred, the highest priority LED indication pattern (status) will be indicated. Refer to
LED Indications.
Priority
No.
1 System Initializing
2 The assignment of the board is refused.
3 Trouble found during self-diagnostics.
4 Normal A Channel is busy (use another from CH1 ~
Operation CHx).
5 All channels are idle.
6 Board A Channel is busy (use another from CH1 ~
Busy CHx).
7 All channels are idle.
8 Downloading firmware.
T1 Alarm Mode
Refer to following figure for LED pattern information. LED indications for the T1 are listed in
Table 2-20 T1 LED Indications
INSTALLING THE EXPANSION INTERFACE BOARDS
ESI
1-4
Trunks
Status LED (Green)
Figure 2-71 Location of Status LED
Table 2-19 PRI LED Indications
Operation Status
on.
SLI RL/Audio
5-8 1-2
(The illustration shows IP7WW-082U-B1.)
LED Indication on the
Base Board
On
3s On / 3s Off
1s On / 1s Off
500ms On / 100ms Off
100ms On / 100ms Off
100ms On / 2s Off
Off
80ms On / 80ms Off /
80ms On / 80ms Off /
80ms On / 400ms Off
SL2100
Table 2-19 PRI
Remarks
• When you exceed the
system capacity.
• When the main soft-
ware version is not
matched.
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