Chapter 7: Glossary
uses your telephony modem MAC address
to authorize access to the Internet. The MAC
address is printed on a label affixed to your
telephony modem.
Protocol
A set of rules and formats that determines the
communication behavior of network entities at
a given layer.
Proxy
A device or program that stands in between
a server (for example, a web site) and a client
(your browser), providing a way to relieve some
of the burden from the server. For example,
your service provider may have a web proxy
that keeps copies of popular web pages; the
proxy can send you those pages instead of
fetching them directly from the web site,
resulting in faster page loading and less network
congestion.
RF
Abbreviation for Radio Frequency. Some
literature refers to coax as "RF cable" and the
connectors as "RF connectors."
RJ-11
A standard 2-conductor modular connector,
commonly used in North America for
connecting telephones.
RJ-45
A standard 8-conductor modular connector,
commonly used on Ethernet cable. An RJ-45
connector looks like a wide RJ-11 (telephone)
connector.
Splitter
A small box with three cable connectors: one
input and two outputs. You may need a splitter
if you have a TV already connected to the cable
outlet that you want to use for your telephony
modem.
You can buy a splitter from any electronics
retailer and most discount stores.
Switched outlet
A power outlet that may be turned on and
off using a wall switch. Usually intended for
lamps. Avoid plugging your computer or
telephony modem into a switched outlet to
avoid disruptions.
TCP/IP
Transmission Control Protocol/Internet Protocol.
The protocols used to facilitate communications
across one or more connected networks.
SURFboard
®
SBV3202 DOCSIS 3.0 telephony modem for Xfinity
®
customers User Guide STANDARD Revision x.3
45