CiTRANS R820 Edge Router Hardware Description
Table 1-7 lists names and functions of major components in a 21-inch cabinet (300
mm in depth).
Table 1-7
Names and Functions of Major Components in a 21-inch Cabinet (300 mm in depth)
Component
Number
Name
Function
Cabinet body
(1)
Wiring hole on cabinet top
When top access wiring mode is used, all wires and
cables are led in and out via these holes
(2)
Cabinet Indicator LED
Three alarm LEDs (green, red, and yellow),
indicating alarm status information of the cabinet
(3)
ESD protection earth
ground fastener
For installing the ESD protection wrist strap to
prevent the equipment from the electrostatic
damage
(5)
Wiring channel
For laying wires and cables
(6)
Wiring hole at cabinet
bottom
When bottom access wiring mode is used, all wires
and cables are led in and out via these holes
(7)
Mounting hole on the
vertical mounting flanges
For securing the subracks and the PDP inside the
cabinet
(9)
Mounting hole for the top-
connection bent angle
bracket
For installing the top-connection bent angle bracket
(10)
Ventilation hole at cabinet
top
At the cabinet top, for air cooling of the cabinet
Cabinet door
(4)
Rear door
For protecting subracks, and preventing dust from
entering the subracks
(8)
Front door
1.2.4
Indicator
Indicators of the 21-inch cabinet are located at the cabinet top. They indicate the
operating status of the equipment and levels of generated alarms.
1-14
Version: A
