Cisco ONS 15454 SDH Specifications Page 43

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1-11
Cisco ONS 15454 SDH Installation and Operations Guide, R3.3
May 2002
Chapter 1 Hardware Installation
Front Door Access
1.3.3.2 ONS 15454 SDH Bay Assembly
The Cisco ONS 15454 SDH Bay Assembly simplifies ordering and installing the ONS 15454 SDH
because it allows you to order shelf assemblies pre-installed in an ETSI rack. The Bay Assembly is
available in a three-shelf configuration. The three-shelf configuration includes three ONS 15454 SDH
shelf assemblies, a slot for third-party fuse and alarm panel, two air ramps and two cable-management
trays. A three-shelf ONS 15454 SDH bay assembly is shown in Figure 1-5.
Figure 1-5 A three-shelf ONS 15454 SDH Bay Assembly
1.4 Front Door Access
The Critical, Major, and Minor alarm LEDs visible through the front door indicate whether a critical,
major, or minor alarm is present anywhere on the ONS 15454 SDH. These LEDs must be visible so
technicians can quickly determine if any alarms are present. You can use the LCD to further isolate
alarms. See Chapter 10, “Alarm Monitoring and Management” for more information.
61583
Fuse and Alarm Panel,
mountable in the rack
if rack is 2200 mm
(86.6 in.) high or higher
Air Ramp
ONS 15454 SDHs
Air Ramp
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