user manual

CHAPTER
1-1
Cisco ONS 15454 SDH Reference Manual, R5.0
April 2008
1
Shelf and FMEC Hardware
This chapter provides a description of Cisco ONS 15454 SDH shelf and backplane hardware. Card and
cable descriptions are provided in Chapter 2, “Common Control Cards,” Chapter 3, “Electrical Cards,”
Chapter 4, “Optical Cards,” and Chapter 14, “Ethernet Operation.” To install equipment, refer to the
Cisco ONS 15454 SDH Procedure Guide.
Chapter topics include:
• 1.1 Overview, page 1-1
• 1.2 Front Door, page 1-3
• 1.3 Front Mount Electrical Connection, page 1-7
• 1.4 E1-75/120 Conversion Panel, page 1-9
• 1.5 Coaxial Cable, page 1-10
• 1.6 Twisted-Pair Balanced Cable, page 1-10
• 1.7 Cable Routing and Management, page 1-11
• 1.9 Fan-Tray Assembly, page 1-13
• 1.10 Power and Ground Description, page 1-14
• 1.11 Alarm, Timing, LAN, and Craft Pin Connections, page 1-14
• 1.12 Cards and Slots, page 1-15
• 1.13 Software and Hardware Compatibility, page 1-18
Note The Cisco ONS 15454 SDH assembly is intended for use with telecommunications equipment only.
Caution Unused card slots should be filled with a blank faceplate (Cisco P/N 15454E-BLANK). The blank
faceplate ensures proper airflow when operating the ONS 15454 SDH without the front door attached,
although Cisco recommends that the front door remain attached.
1.1 Overview
When installed in an equipment rack, the ONS 15454 SDH assembly is typically connected to a fuse and
alarm panel to provide centralized alarm connection points and distributed power for the
ONS 15454 SDH. Fuse and alarm panels are third-party equipment and are not described in this