V7122 Gateway User Guide
33
Table 5
Status LED Indicators
Label
LED Color LED Function
Red
Indicates gateway failure (fatal error)
FAIL
--
Off indicates normal functioning
Green
Gateway initialization sequence terminated OK
ACT
Yellow N/A
Table 6
E1/T1 Trunk Status LED Indicators
Label
LED Color Signal Description
Green
Trunk is synchronized (normal operation)
T1/E1 Status 1 to 8
and
T1/E1 Status 9 to 16
Red
Loss due to any of the following 4 signals:
LOS Loss of Signal
LOF (Loss of Frame)
AIS (Alarm Indication Signal -- 'Blue alarm')
RAI (Remote Alarm Indication -- 'Yellow alarm')
On the front panel 16 LEDs are provided for 16-span units and 8 LEDs are
provided for 1-span, 2-span, 4-span, and 8-span units. In the case of 1-span, 2-
span and 4-span units, the extra LEDs are unused.
Table 7
Ethernet LED Indicators
Label
LED Color LED Function
LINK
Green
Link all OK
ACT
Yellow
Transmit / receive activity
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