User`s manual

www.modecom.eu
118
WLAN Router
broadband
A telecommunications technology that can send dierent types of data over the
same medium. DSL is a broadband technology.
broadcast
To send data to all computers on a network.
DHCP
Dynamic Host Conguration Protocol
DHCP automates address assignment and management. When a computer con-
nects to the LAN, DHCP assigns it an IP address from a shared pool of IP addresses;
after a specied time limit, DHCP returns the address to the pool.
DHCP relay
Dynamic Host Conguration Protocol relay
A DHCP relay is a computer that forwards DHCP data between computers that re-
quest IP addresses and the DHCP server that assigns the addresses. Each of the
Wireless Gateway’s interfaces can be congured as a DHCP relay. See DHCP.
DHCP server
Dynamic Host Conguration Protocol server
A DHCP server is a computer that is responsible for assigning IP addresses to the
computers on a LAN. See DHCP.
digital
Of data, having a form based on discrete values expressed as binary numbers (0’s
and 1’s). The data component in DSL is a digital signal. See analog.
DNS
Domain Name System
The DNS maps domain names into IP addresses. DNS information is distribu-
ted hierarchically throughout the Internet among computers called DNS servers.
For example, www.yahoo.com is the domain name associated with IP address
216.115.108.243. When you start to access a web site, a DNS server looks up the re-
quested domain name to nd its corresponding IP address. If the DNS server can-
not nd the IP address, it communicates with higher-level DNS servers to determi-
ne the IP address. See domain name.
domain name
A domain name is a user-friendly name used in place of its associated IP address.
Domain names must be unique; their assignment is controlled by the Internet
Corporation for Assigned Names and Numbers (ICANN). Domain names are a key
element of URLs, which identify a specic le at a web site. See DNS.
download
To transfer data in the downstream direction, i.e., from the Internet to the user.
DSL
Digital Subscriber Line
A technology that allows both digital data and analog voice signals to travel over
existing copper telephone lines.