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Cisco ONS 15454 SDH Reference Manual, R5.0
April 2008
Chapter 1 Shelf and FMEC Hardware
1.3 Front Mount Electrical Connection
• FMEC Slot 20 supports an electrical card in Slot 3.
• FMEC Slot 21 supports an electrical card in Slot 4.
• FMEC Slot 22 supports an electrical card in Slot 5.
• FMEC Slot 23 hosts the MIC-A/P alarm and power FMEC.
• FMEC Slot 24 supports the MIC-C/T/P timing, craft, and power FMEC.
• FMEC Slot 25 supports an electrical card in Slot 13.
• FMEC Slot 26 supports an electrical card in Slot 14.
• FMEC Slot 27 supports an electrical card in Slot 15.
• FMEC Slot 28 supports an electrical card in Slot 16.
• FMEC Slot 29 supports an electrical card in Slot 17.
FMEC slots have symbols indicating the type of cards that you can install in the slots. Each
ONS 15454 SDH FMEC has a corresponding symbol. The symbol on the FMEC must match the symbol
on the slot. Table 1-1 shows the slot-FMEC symbol definitions.
Table 1-2 lists the number of ports, line rates, connector options, and connector locations for
ONS 15454 SDH electrical FMECs.
Table 1-1 Slot and FMEC Symbols
Color/Shape Definition
Orange/Circle Electrical 75-ohm E-1 connection via 1.0/2.3 miniature coax connectors. Only
install ONS 15454 SDH FMECs with a circle symbol on the faceplate.
Electrical 120-ohm E-1 connection via DB-37 connectors. Only install
ONS 15454 SDH FMECs with a circle symbol on the faceplate.
Electrical 75-ohm E3/DS3 connection via 1.0/2.3 miniature coax connectors.
Only install ONS 15454 SDH FMECs with a circle symbol on the faceplate.
Green/Star Electrical 75-ohm E1-42 and STM-1e connections via 1.0/2.3 miniature coax
connectors. Only install ONS 15454 SDH FMECs with a star symbol on the
faceplate.
Red/Vertical ellipse Node power and interface for environmental alarms. Only install
ONS 15454 SDH FMECs with a vertical ellipse symbol on the faceplate.
Red/Horizontal
ellipse
Node power and LAN timing. Only install ONS 15454 SDH FMECs with a
horizontal ellipse symbol on the faceplate.
Table 1-2 FMEC, Ports, Line Rates, and Connectors
FMEC Ports Line Rate per Port Connector Type Connector Location
FMEC-E1 14 2.048 Mbps 1.0/2.3 miniature coax
connector
EFCA
FMEC-DS1/E1 14 2.048 Mbps DB-37 EFCA
FMEC E1-120NP 42 2.048 Mbps Molex 96-pin LFH
connector
EFCA
FMEC
E1-120PROA
3 to 42 2.048 Mbps Molex 96-pin LFH
connector
EFCA,
Slots 18 to 21