Cisco Cisco ONS 15454 SONET Multiservice Provisioning Platform (MSPP) Guía De Diseño
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Figure 1-1: Cisco ONS 15454 Shelf Assembly
17 Plug-in Card Slots
Fan Tray
Alarm Indicators
LCD
Front Panel
When installed in an equipment rack, the ONS 15454 assembly is typically connected to a fuse
and alarm panel to provide centralized alarm connection points and distributed power for the ONS
15454. Fuse and alarm panels are third-party equipment and are not covered in this document.
The front door of the ONS 15454 allows access to the shelf assembly, fan tray, and cable
management area. The shelf assembly can be installed in both EIA-standard and Telcordia-
standard racks.
The shelf assembly is a total of 17 inches wide with no mounting ears attached. Ring runs are not
provided by Cisco and may hinder side-by-side installation of shelves where space is limited. The
ONS 15454 measures 18.5 inches high, 19 or 23 inches wide (depending on which way the
mounting ears are attached), and 12 inches deep (47 by 48.3 by 30.5 cm). You can install up to
four ONS 15454 shelves in a seven-foot equipment rack. The ONS 15454 must have 1 inch of
airspace below the installed shelf assembly to allow air flow to the fan intake. If a second ONS
15454 is installed underneath the shelf assembly, the air ramp on top of the lower shelf assembly
provides the air spacing needed and should not be modified in any way.
The backplanes provide access to alarm contacts, external interface contacts, power terminals,
and BNC/SMB connectors. The lower section of the ONS 15454 backplane is covered by a clear
plastic protector.
and alarm panel to provide centralized alarm connection points and distributed power for the ONS
15454. Fuse and alarm panels are third-party equipment and are not covered in this document.
The front door of the ONS 15454 allows access to the shelf assembly, fan tray, and cable
management area. The shelf assembly can be installed in both EIA-standard and Telcordia-
standard racks.
The shelf assembly is a total of 17 inches wide with no mounting ears attached. Ring runs are not
provided by Cisco and may hinder side-by-side installation of shelves where space is limited. The
ONS 15454 measures 18.5 inches high, 19 or 23 inches wide (depending on which way the
mounting ears are attached), and 12 inches deep (47 by 48.3 by 30.5 cm). You can install up to
four ONS 15454 shelves in a seven-foot equipment rack. The ONS 15454 must have 1 inch of
airspace below the installed shelf assembly to allow air flow to the fan intake. If a second ONS
15454 is installed underneath the shelf assembly, the air ramp on top of the lower shelf assembly
provides the air spacing needed and should not be modified in any way.
The backplanes provide access to alarm contacts, external interface contacts, power terminals,
and BNC/SMB connectors. The lower section of the ONS 15454 backplane is covered by a clear
plastic protector.
Electrical Interface Assemblies
Electrical Interface Assemblies (EIAs) are attached to the shelf assembly backplane to provide
electrical interface cable connections. EIAs must be ordered when using DS-1, DS-3, DS3XM-6,
or EC-1 cards. EIAs are available with SMB and BNC connectors for DS-3 or EC-1 cards. EIAs
are available with AMP Champ connectors for DS-1 cards. You must use SMB EIAs for DS-1
twisted-pair cable installation. EIAs are typically pre-installed when ordered with the ONS 15454.
Alarm Expansion Panel
The ONS 15454 Alarm Expansion Panel (AEP) is used with the Alarm Interface Card (AIC-I) card
to provide 48 dry alarm contacts for the ONS 15454 system, 32 of which are inputs and 16
outputs. The AEP is a printed circuit board assembly that is installed on the backplane. Figure 1-2
shows the AEP board.