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NEC Univerge SV9100 - Page 231

NEC Univerge SV9100
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UNIVERGE SV9100 Issue 1.2
System Hardware Manual 4 - 77
Figure 4-21 GCD-PRTA LED Indication Pattern of Layer 1 on T1 Unit
Table 4-41 ISDN LED Indications
Alarm Details of the Alarm LED Indication Pattern
LOS
Loss of Signal (Red alarm)
No Signam (Analogue
Interface)
Following an alarm blink (red,
green, red, green) a Red LED
will light.
AIS
Alarm Indication Signal
(Blue Alarm)
Following an alarm blink (red,
green, red, green) a Red LED
slowly flashes On and Off
twice.
OOF
Out Of Frame (Red Alarm) Following an alarm blink (red,
green, red, green) a Red LED
and Green LED flash On and
Off three times
simultaneously.
RAI
Remote Alarm Indication
(Yellow Alarm)
Following an alarm blink (red,
green, red, green) a Green
LED
flashes On and Off twice.
No Alarm
The system does the LED control.

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