Appendix A: Glossary
address is printed on a label affixed to your Data
Gateway.
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
Data Gateway. You can buy a splitter from any
electronics retailer and most discount stores.
SSID Service Set IDentifier. A string of text (up to
32 characters long) that uniquely identifies a
wireless LAN.
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 Data Gateway
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.
Touchstone DG3270 Data Gateway User Guide STANDARD Revision 1.1 34
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