| A | B |
|---|
| Public switched telephone network (PSTN) | the worldwide telephone system that handles voice-oriented telephone calls |
| Dial-up line | a temporary connection that uses one or more analog telephone lines for communication. |
| Dedicated lines | a connection that always is established between two communication devices |
| Integrated Services Digital Network (ISDN) Line | set of standards for digital transmission of data over standard copper telephone lines |
| Multiplexing | a technique that allows telephone lines to carry three or more signals at once through the same line |
| Digital Subscriber Line (DSL) | transmits at fast speeds on existing standard copper telephone wiring. |
| Asymmetric Digital Subscriber Line (ADSL) | type of DSL that supports faster rates when receiving data (the downstream rate) than when sending data (upstream rate) |
| T-carrier line | any of several types of digital lines that carry multiple signals over a single communication line. |
| T1 Line | used by businesses to connect to the Internet |
| Fractional T1 Line | less expensive albeit slower connection for homeowners and small businesses |
| T3 Line | is equal in speed to 28 T1 lines |
| Cable Television (CATV) lines | popular type of nonstandard |
| Fixed wireless | uses radio signals to transfer between a transmitting tower and an antenna on a house or business to provide the high speed connection |
| Internet Service Provide (ISP) | a business that has a permanent Internet connection and provides temporary connections to individuals and companies free or for a fee |
| Point of Presence (POP) | the telephone number you dial to connect to an access point on the Internet whenever you use a telephone line to access the Internet |
| Regional ISP | provides access to the Internet through one or more telephone numbers local to a specific geographic area. |
| National ISP | a larger business that provides local telephone numbers in most major cities and towns nationwide. |
| Online service provider (OSP) | supplies Internet access and has member-only features that offer a variety of special content and services such as news |
| Wireless service provider (WSP) | provides wireless Internet access to users with wireless modems or Web-enabled handheld computers or devices |
| Bluetooth | short-range wireless connection that utilizes radio frequency to transmit data between two electronic devices |
| Web browsers | a software program that allows for the display of Web pages. |
| Uniform Resource Locator (URL) | a unique address entered in the browser’s address bar |
| Hypertext Transfer Protocol (HTTP) | specifies the format to be used for transmitting data on the web |
| Domain name | text version of the numeric IP address |
