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DSL
Short for digital subscriber line, but is commonly used in reference to the asymmetric version of this technol-
ogy (ADSL) that allows data to be sent over existing copper telephone lines at data rates of from 1.5 to 9
Mbps when receiving data (known as the downstream rate) and from 16 to 640 Kbps when sending data
(known as the upstream rate). ADSL requires a special ADSL modem. ADSL is growing in popularity as
more areas around the world gain access.
DSL modem
DSL stands for digital subscriber line. V DSL modem uses your existing phone lines to send and receive da-
ta at high speeds.
Encryption
A method for providing a level of security to wireless data transmissions. The Router uses two levels of en-
cryption; 40/64 bit and 128 bit. 128 bit is a more powerful level of encryption than 40/64 bit.
Ethernet
A LAN specification developed jointly by Xerox, Intel and Digital Equipment Corporation. Ethernet networks
use CSMA/CD to transmit packets at a rate of 10 Mbps over a variety of cables.
Ethernet Address
See MAC address.
Fast Ethernet
An Ethernet system that is designed to operate at 100 Mbps.
Firewall
Electronic protection that prevents anyone outside of your network from seeing your files or damaging your
computers.
Full Duplex
A system that allows packets to be transmitted and received at the same time and, in effect, doubles the po-
tential throughput of a link.
IEEE
Institute of Electrical and Electronics Engineers. This American organization was founded in 1963 and sets
standards for computers and communications.
