DSE XH9950, Инструкция по установке и эксплуатации, Страница: 33 / 37

XH9950 – DSE Wireless ADSL Router 802.11g 4 port
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8 Appendix
8.1 Glossary of terms
10Base-T: An adaptation of the Ethernet standard for Local Area Network (LAN).
10Base-T uses a twisted pair cable with maximum length of 100 meters.
AAL:
ATM Adaptation Layer that defines the rules governing segmentation and
reassembly of data into cells. Different AAL types are suited to different traffic lasses.
Address mask : A bit mask used to select bits from an Internet address for subnet
addressing. The mask is 32 bits long and selects the network portion of the Internet
address and one or more bits of the local portion. Sometimes called subnet mask.
ADSL:
Asymmetric Digital Subscriber Line, as it’s name showing, is an asymmetrical
data transmission technology with high traffic rate downstream and low traffic rate
upstream. ADSL technology satisfies the bandwidth requirement of applications,
which demand “asymmetric” traffic, such as web surfing, file download and Video-on-
demand (VOD).
ATM: Asynchronous Transfer Mode is a layer 2 protocol supporting high-speed
asynchronous data with advanced traffic management and quality of service
features.
Bps:
Bits per second. A standard measurement of digital transmission speeds.
Bridge:
A device that connects two or more physical networks and forwards packets
between them. Bridges can usually be made to filter packets, that is, to forward only
certain traffic. Related devices are: repeaters which simply forward electrical signals
from one cable to the other, and full-fledged routers which make routing decisions
based on several criteria.
CPE: Customer Premises Equipment, such as ADSL router, USB modem.
DHCP:
Dynamic Host Configuration Protocol. Used for assigning dynamic IP
address to devices on a network. Used by ISPs for dialup users.
DNS: Domain Name Server, translates domain names into IP addresses to help user
recognize and remember. However, the Internet actually runs on numbered IP
addresses, DNS servers needs to translate domain names back to their respective
IP addresses.
DSL:
Digital Line Subscriber (DSL) technology provides high-speed access over
twisted copper pair for connection to the Internet, LAN interfaces, and to broadband
services such as video-on-demand, distance learning, and video conferencing.
FTP:
File Transfer Protocol. The Internet protocol (and program) used to transfer
files between hosts.