Chapter 9
:
Glossary
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SBV2402 Internet & Voice cable modem for Xfinity® customers user guide
33
Ethernet
A standard method of connecting two or
more computers to a local area network
(LAN).
Event
An informational message used for
monitoring network status.
F
F-connector
The type of connector used on a coaxial RF
cable. There are two common types of F
connectors: slip-on and screw-on. Use coax
cables with screw-on connectors to
connect your SBV2402.
Firewall
A hardware or software device that prevents
unauthorized access to a private network
from the internet. The SBV2402 provides a
built-in firewall.
G
Gateway
The device, usually a router, that connects
devices on a given IP subnet to other IP
subnets.
H
Headend
The “central office” in an HFC network. The
headend houses both video and data
equipment. In larger cable networks, a
“master” headend often feeds several
“remote” headends to provide distributed
services.
HTTP
Hypertext transfer protocol
. A set of
rules for transferring text, graphic, and
multi-media files on the internet.
Hub
A box with several ethernet connectors.
Ethernet hubs provide a common point of
contact for all connected devices.
I
IP address
A number assigned to your computer by
your service provider, used to identify your
computer to other systems on the Internet.
ISDN
Integrated services digital network
. A
digital telephony standard that provides
communication speeds about twice as fast
as standard dialup.
L
LAN
Local area network
. A network that allows
computers in a single location (such as a
building) to communicate with one
another.
LED
Light emitting diode
. A semi-conductor
diode that emits light when current is
passed through it.
M
MAC address
Media access control address
. A number
that uniquely identifies any device
connected to a network. Your service
provider uses your SBV2402 MAC
address to authorize internet access.
