HiRO H50212 - Manual (Page 210)

User’s Guide Glossary
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together to reduce inductance and noise. Each telephone
line uses one pair. In homes, it is most often installed with
two pairs. For Ethernet LANs, a higher grade called Category
3 (CAT 3) is used for 10BASE-T networks, and an even
higher grade called Category 5 (CAT 5) is used for
100BASE-T networks. See 10BASE-T, 100BASE-T, Ethernet.
unnumbered interfaces
An unnumbered interface is an IP interface that does not
have a local subnet associated with it. Instead, it uses a
Router-id that serves as the source and destination address
of packets sent to and from the Router. Unlike the IP address
of a normal interface, the Router-id of an unnumbered
interface is allowed to be the same as the IP address of
another interface. For example, the WAN unnumbered
interface of your device uses the same IP address of the
LAN interface (192.168.1.1).
The unnumbered interface is temporary – PPP or DHCP will
assign a ‘real’ IP address automatically.
upstream The direction of data transmission from the user to the
Internet.
VC Virtual Circuit
A connection from your DSL Router to your ISP.
VCI Virtual Circuit Identifier
Together with the Virtual Path Identifier (VPI), the VCI
uniquely identifies a VC. Your ISP will tell you the VCI for
each VC they provide. See VC.
VPI Virtual Path Identifier
Together with the Virtual Circuit Identifier (VCI), the VPI
uniquely identifies a VC. Your ISP will tell you the VPI for
each VC they provide. See VC.
WAN Wide Area Network
Any network spread over a large geographical area, such as
a country or continent. With respect to the Wireless ADSL2+
Router, WAN refers to the Internet.
Web browser A software program that uses Hyper-Text Transfer Protocol
(HTTP) to download information from (and upload to) web
sites, and displays the information, which may consist of text,
graphic images, audio, or video, to the user. Web browsers
use Hyper-Text Transfer Protocol (HTTP). Popular web
browsers include Netscape Navigator and Microsoft Internet
Explorer. See HTTP, web site, WWW.
Web page A web site file typically containing text, graphics and
hyperlinks (cross-references) to the other pages on that web
site, as well as to pages on other web sites. When a user
accesses a web site, the first page that is displayed is called
the home page. See hyperlink, web site.
Web site A computer on the Internet that distributes information to
(and gets information from) remote users through web
browsers. A web site typically consists of web pages that
contain text, graphics, and hyperlinks. See hyperlink, web
page.
WWW World Wide Web