Motorola SURFBOARD SVG2500 User Manual page 166

Wireless voice gateway
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17 GLOSSARY
TERM
NIC
node
noise
O
TERM
ohm
OSI
P
TERM
packet
packet-
switched
PacketCable
DEFINITION
with the correct network address data, selects routes, and
recognizes and forwards to the transport layer incoming
messages for local host domains.
A network interface card converts computer data to serial
data in a packet format that it sends over the LAN. A NIC is
installed in an expansion slot or can be built-in. Every Ethernet NIC
has a MAC address permanently saved in its ROM.
On a LAN, a generic term for any network device.
On an HFC network, the interface between the fiber-optic trunk
and coaxial cable feeders to subscriber locations. A node is
typically located in the subscriber's neighborhood.
Random spurts of electrical energy or interface. May produce a
salt-and-pepper pattern on a television picture.
DEFINITION
A unit of electrical resistance.
The Open Systems Interconnection reference model is an
illustrative model describing how data moves through a
network from an application on the source host to an
application on the destination host. It is a conceptual framework
developed by ISO that is now the primary model for
intercomputer communications. OSI is a model only; it does
not define a specific networking interface.
DEFINITION
The unit of data that is routed between the sender and
destination on the Internet or other packet-switched network.
When data, such as an e-mail message, is sent over the Internet,
the sender's IP divides the data into uniquely-numbered packets.
The packet header contains the source and destination IP
addresses. The individual packets may travel different routes.
When all packets arrive at the destination, IP at that end
reassembles the packets.
A scheme to handle transmissions on a connectionless network
such as the Internet. An alternative is circuit-switched.
A CableLabs-led project to define a common platform to deliver
advanced, real-time multimedia services over two-way HFC
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