Nortel BayStack Instant Internet 100-S Using Manual page 318

318 Glossary
dial-up connection
A temporary, as opposed to dedicated, connection between computers
established over an analog or digital phone line.
DIP
Dual In-line Pins.
Directory Service
A network service that maintains user account information such as user
information, security, access rights, and group membership. Examples of
directory services include NetWare NDS and NT Domain User and Groups.
Discard
A service used for troubleshooting that discards any message or packet sent to
it.
DLL
Dynamic Link Library.
DMZ
Demilitarized Zone (DMZ). A less secure, publicly accessible, network
segment that sits between the Internet and your internal network.
DNS
Domain Name Server or Domain Name Service. Addressing system that
incorporates the domain name into the IP address.
domain name
Used to organize Internet names into manageable groups, such as
nortelnetworks.com or instant.net.
DOVBS
Data over Voice. A technology used to transmit data and voice simultaneously
over twisted-pair copper wiring.
DSL
digital subscriber lines. A type of high-speed communications technology that
supports connections from a telephone switching station to a home or office
over copper wires.
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