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YML14WN ADSL2+ Wireless N150 Modem Router User Guide
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NetComm Gateway Series - ADSL2+ Wireless N150 Modem Router
Appendix C: Technology Glossary
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 denes the rules governing segmentation and reassembly of data into cells. Different AAL types are suited to
different trafc classes.
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 trafc rate
downstream and low trafc rate upstream. ADSL technology satises the bandwidth requirement of applications, which demand
“asymmetric” trafc, such as web surng, le download and Video-on-demand (VOD).
ATM
Asynchronous Transfer Mode is a layer 2 protocol supporting high-speed asynchronous data with advanced trafc 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 lter packets,
that is, to forward only certain trafc. Related devices are: repeaters which simply forward electrical signals from one cable to the other, and
full-edged routers which make routing decisions based on several criteria.
CPE
Customer Premises Equipment, such as ADSL router, USB modem.
DHCP
Dynamic Host Conguration 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.