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CoS
(Class of Service) A category based on the type of user, type of application, or some other criteria that QoS systems
can use to provide differentiated classes of service. The characteristics of the CoS may be appropriate for high
throughput traffic, for traffic with a requirement for low latency, or simply for best effort. The QoS experienced by a
particular flow of traffic will be dependent on the number and type of other traffic flows admitted to its class. See also,
QoS.
Daemon
A program that runs continuously in the background, or is activated by a particular event (for example, an error may
trigger Syslog). The word daemon is Greek for "spirit" or "soul." See also, SYSLOG.
DAT
(Dynamic Address Translation) Nomadix Gateways provide "plug-and-play" access to subscribers who are
misconfigured with static (permanent) IP addresses, or subscribers that do not have DHCP functionality on their
computers. DAT is a Nomadix, Inc. patented technology that allows all users to obtain network access, regardless of
their computer's network settings. See also, DHCP.
DHCP
(Dynamic Host Configuration Protocol) A standard method for assigning IP addresses automatically to devices
connected on a TCP/IP network. When a new device connects to the network, the DHCP server assigns an IP address
from a list of its available addresses. The device retains this IP address for the duration of the session. When the device
disconnects from the network, the IP address becomes available for reassignment to another device. See also,
Dynamic IP
Address,
DNS
(Domain Name System) A system that maps meaningful domain names with complex numeric IP addresses. See also,
Domain Name
and
Domain Name
A unique and meaningful name representing each addressable computing device on a dynamic network (for example,
the Internet). Some devices have more than one domain name. When a user types a domain name, requesting a
connection to the device, DNS converts the domain name into a numeric IP address. The location of the device on the
network is known by its IP address. WWW.YAHOO.COM is an example of a commercial domain name on the World
Wide Web. See also, DNS, Internet, and
Driverless Print Servers
Servers that can bill subscribers' rooms for printing their documents without them having to install printers. See also,
Print Billing Command.
DSSS
(Direct Sequence Spread Spectrum) One of two types of spread spectrum radio—the other being Frequency Hopping
Spread Spectrum (FHSS). DSSS is a transmission technology used in
sending station is combined with a higher data rate bit sequence, or "chipping" code, that divides the user data
according to a spreading ratio. The chipping code is a redundant bit pattern for each bit that is transmitted, which
increases the signal's resistance to interference. If one or more bits in the pattern are damaged during transmission, the
original data can be recovered due to the redundancy of the transmission.
DTIM
(Delivery Traffic Indication Message) A message included in data packets that can increase wireless efficiency.
IP
Address,
Static IP
IP
Address.
IP
Address.
Address, and TCP/IP.
WLAN
transmissions where a data signal at the
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