Table 2-24 T1 Led Indications; Figure 2-75 Indication Pattern Of Layer 1 On T1 Board - NEC SL2100 Hardware Manual

SL2100
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 2-24 T1 LED Indications on page
LOS
green
AIS
green
OOF
green
RAI
green

Figure 2-75 Indication Pattern of Layer 1 on T1 Board

Alarm
LOS LOS (Loss of Signal (Red Alarm))
No Signal (Analog Interface)
AIS AIS (Alarm Indication Signal (Blue Alarm))
OOF OOF (Out of Frame (Red Alarm))
RAI RAI (Remote Alarm Indication (Yellow
Alarm))
No alarm System does LED control
The order of priority is set up to alarm in the order LOS → AIS → OOF → RAI.
2-58
Table 2-23 PRI/BRI LED Indications
Operation Status
2-58.
120 ms
1 cycle 3.8 sec (120 ms x 32 = 3840 ms)

Table 2-24 T1 LED Indications

Details of the Alarm
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
The LED Indication Pattern
Following an alarm blink twice (green), a green LED light up.
Following an alarm blink twice (green), a green LED flashes
on and off slowly twice
Following an alarm blink twice (green), a green LED flash on
and off 3 times simultaneously.
Following an alarm blink twice (green), a green LED goes
off.
ISSUE 1.0
Remarks
• When you exceed the
system capacity.
• When the main soft-
ware version is not
matched.
For 1PRIDB Only
Installation