Cisco 805 Series, Hardware Installation Manual, Page: 10 / 64

Terms and Acronyms
Cisco 805 Router Hardware Installation Guide x
equivalent hub button can affect the setting of this router button, refer to the
“Connecting an Ethernet Device” section in Chapter 2, “Installing the Cisco 805
Router.”
link
Indicates that a connection between the router and an Ethernet device exists.
MDI
Media-dependent interface. A port on a Ethernet network device used to connect the
device to the Ethernet network, usually through a hub or switch.
MDI-X
Media-dependent interface, crossover. A port on an Ethernet hub, such as the Cisco
1528 Micro Hub 10/100, that connects the Ethernet network devices through the MDI
port to create a network.
NIC
Network interface card. A board that provides network communication capabilities to
and from a computer system. Also called an
adapter .
SELV
Safety extra-low voltage. A secondary circuit that under normal conditions has a voltage
less than 42.4V peak or 42 Vdc. Under a single fault condition, this circuit should not
exceed these values for longer than 0.2 seconds and should not exceed 71V peak or
120 Vdc.
straight-through Ethernet cable
A cable that wires a pin to its equivalent pin. This cable typically connects a router to a
hub. A straight-through Ethernet cable is the most common cable used.
TNV
Telecommunications network voltage. A secondary circuit that under normal operating
conditions, carriers telecommunication signals. Telecommunications signals are a
steady state, varying amplitude, or intermittent voltage or current intended for use on a
telecommunications network. A telecommunications network is considered a
metallically terminated circuit intended to carry telecommunication signals for voice,