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B Glossary
The DCE sits between the DTE (data terminal equipment) and a transmission circuit such as a
phone line.
DHCP
Dynamic Host Configuration Protocol automatically assigns IP addresses to clients when they
log on. DHCP centralizes IP address management on central computers that run the DHCP
server program. DHCP leases addresses for a period of time, which means that addresses are
made available to assign to other systems.
DNS
Domain Name System links names to IP addresses. When you access Web sites on the
Internet, you can type the IP address of the site or the DNS name. When you type a domain
name in a Web browser, a query is sent to the primary DNS server defined in your Web
browser’s configuration dialog box. The DNS server converts the name you specified to an IP
address and returns this address to your system. From then on, the IP address is used in all
subsequent communications.
Domain
Name
The unique name that identifies an Internet site. Domain Names always have 2 or more parts,
separated by dots. The part on the left is the most specific, and the part on the right is the
most general.
DRAM
Dynamic RAM that stores information in capacitors that must be refreshed periodically.
Driver
A driver is a program that interacts with a particular device or special kind of software. The
driver contains special knowledge of the device or a special software interface that programs
using the driver do not.
DSL
Digital Subscriber Line technologies enhances the data capacity of the existing twisted-pair
wire that runs between the local telephone company switching offices and most homes and
offices. There are actually seven types of DSL service, ranging in speeds from 16 Kbits/sec to
52 Mbits/sec. The services are either symmetrical (traffic flows at the same speed in both
directions), or asymmetrical (the downstream capacity is higher than the upstream capacity).
DSL connections are point-to-point dedicated circuits, meaning that they are always
connected. There is no dial-up. There is also no switching, which means that the line is a
direct connection into the carrier’s frame relay, ATM (Asynchronous Transfer Mode), or
Internet-connect system.
DSLAM
A Digital Subscriber Line Access Multiplexer (DSLAM) is a network device, usually at a
telephone company central office, that receives signals from multiple customer Digital
Subscriber Line connections and puts the signals on a high-speed backbone line using
multiplexing techniques. Depending on the product, DSLAM multiplexers connect DSL lines
with some combination of asynchronous transfer mode ATM, frame relay, or IP networks.
DTE
Originally, the DTE (Data Terminal Equipment) was a dumb terminal or printer, but today it is
a computer, or a bridge or router that interconnects local area networks.
EMI
ElectroMagnetic Interference. The interference by electromagnetic signals that can cause
reduced data integrity and increased error rates on transmission channels.
Ethernet
A very common method of networking computers in a LAN. There are a number of adaptations
- User’s Guide 1
- Copyright 2
- ZyXEL Limited Warranty 3
- Interference Statement 5
- Customer Support 6
- Table of Contents 7
- List of Tables 9
- List of Figures 9
- What is ADSL? 10
- What is USB? 11
- Device Drivers 12
- Features 13
- About This Manual 14
- Chapter 1 15
- 1.2 Software Setup 16
- 1.3 Modem Installation 18
- 1.3.2 Procedure 19
- 1.4 Front Panel LEDs 20
- Prestige 630 ADSL USB Modem 21
- Chapter 2 23
- DSL Modem Installer 23
- 2.3 Update Modem Software 24
- 2.4 Remove Software 25
- Chapter 3 27
- Control Panel Application 27
- Chapter 4 29
- 4.1.2 Microsoft 31
- Windows 31
- 4.1.3 Microsoft 33
- 4.2 LAN USB Driver 34
- 4.2.2 Microsoft 36
- 4.2.3 Microsoft 38
- Chapter 5 41
- Troubleshooting 41
- Glossary 43
- Glossary C 45
- Glossary E 47
- Glossary G 49
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