Table 2-19 T1 Led Indications; Table 2-20 E1 Led Indications; Figure 2-84 1Priu-C1 Led Indication Pattern Of Layer 1 On T1 Unit - NEC SL1100 Hardware Manual

ISSUE 6.0
LED Indication
Live LED (D4) Busy LED (D3)
(Green) (Red)
Off
Flash 80ms (On/
Off) x3/ 400ms
T1 Alarm Mode
Refer to following figure for LED pattern information. LED indications for the T1 are listed in
Table 2-19 T1 LED Indications on page
red
LOS
green
red
AIS
green
red
OOF
green
red
RAI
green

Figure 2-84 1PRIU-C1 LED Indication Pattern of Layer 1 on T1 Unit

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
E1 Alarm Mode
Refer to following figure for LED pattern information. LED indications for the E1 are listed in
Table 2-20 E1 LED Indications on page
Hardware Manual
Operation Status
On Unit Busy A Channel is busy (use another
from Ch1 - Chx)
Off All channels are Idle.
Downloading firmware
Off
2-61.
120 ms
1 cycle 3.8 sec (120ms x 32=3840 ms)

Table 2-19 T1 LED Indications

Details of the alarm
2-62.
The LED indication pattern
Following an alarm blink (red, green, red, green), a red
LED lighting up.
Following an alarm blink (red, green, red, green), a red
LED flashes on and off slowly twice
Following an alarm blink (red, green, red, green), a red
LED and a green LED flash on and off 3 times simultane-
ously.
Following an alarm blink (red, green, red, green), a green
LED flashes on and off twice.
SL1100
Remarks
-
-
-
2-61