CHAPTER 3 Physical Description
Mediant 500 Gateway & E-SBC | Hardware Installation Manual
E1/T1 LEDs
The E1/T1 trunk port provides a LED for indicating operating status, as described in the following
table:
Table 3-5:
E1/T1 LED Description
Color
State
Description
Green
On
Trunk is synchronized (normal operation).
Red
On
Loss due to any of the following signals:
■
LOS - Loss of Signal
■
LOF - Loss of Frame
■
AIS - Alarm Indication Signal (the Blue Alarm)
■
RAI - Remote Alarm Indication (the Yellow Alarm)
-
Off
Failure / disruption in the AC power supply or the power is currently not being
supplied to the device through the AC power supply entry.
Power LED
The
POWER
LED indicates the power supply status, as described in the following table.
Table 3-6:
POWER LED Description
LED Color
LED State
Description
Green
On
Power is received by the device.
-
Off
No power received by the device.
Rear Panel Description
The device's rear panel is shown in the following figure and described in the subsequent table.
Figure 3-2:
Rear Panel
Table 3-7:
Rear Panel Description
Item #
Label
Description
1
Protective earthing screw.
2
I / 0
Power switch (O is off; I is on).
3
100-240V~50-60Hz 0.8A Max.
Three-prong AC power supply entry.
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