NEC SL2100 - Page 93

ISSUE 4.0 SL2100
INSTALLING THE EXPANSION INTERFACE BOARDS 91
Alarm
Details of the Alarm
The LED Indication Pattern
AIS
AIS (Alarm Indication Signal (Blue Alarm))
Following an alarm blink twice (green), a green LED flashes
on and off slowly twice
OOF
OOF (Out of Frame (Red Alarm))
Following an alarm blink twice (green), a green LED flash on
and off 3 times simultaneously.
RAI
RAI (Remote Alarm Indication (Yellow
Alarm))
Following an alarm blink twice (green), a green LED goes
off.
TS16
TS16 (Receive Time Slot 16 all Alarm)
An alarm blink repeat twice by 1 cycle.
No alarm
System does LED control
The order of priority is set up to alarm in the order LOS → AIS → OOF → RAI → TS16.