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Cisco ONS 15454 SDH Reference Manual, R5.0
April 2008
Chapter1 Shelf and FMEC Hardwa re
1.12 Cards and Slots
1.12 Cards and Slots
ONS 15454 SDH cards have electrical plugs at the back that plug into electrical connectors on the shelf
assembly backplane. When the ejectors are fully clo sed, the card plugs into the assembly backplane
Figure 1-10 shows card installation.
Figure1-10 Installing Cards in the ONS 15454 SDH

1.12.1 Card Slot Requirements

The ONS 15454 SDH shelf assembly has 17 card slots numbered seque ntially from left to right. Slots 1
through 6 and 12 through 17 are for traffic-bearing cards.
Slots 7 and 11 are dedicated to TCC2/TCC2P cards. Slots 8 and 10 are dedicated to cross-connect
(XC-VXL-2.5G, XC-VXL-10G, XC10G) cards. Slot 9 is reserved for the optio nal AIC-I card. Slots 3
and 15 can also host protect cards that are used in 1: N protection.
Caution Do not operate the ONS 15454 SDH with a single TCC2/TCC2P card or a single
XC-VXL-2.5G/XC-VXL-10G/XC10G card installed. Always operate the shelf assembly with one
working and one protect card of the same type.
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FAN FAIL CRIT MAJ MIN
Guide rail
Ejector