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Glossary of Terms
Bandwidth: A measure of the rate at which data can be sent through the
network. This value is usually given in bits per second (bps) or kilobits
per second (kbps).
CIF (Common Intermediate Format): An intermediate video format. When
D-Link DVC-1000 video is transmitted over a network, the sizes will
be CIF, QCIF, or SQCIF. The VideoPhone will default to CIF. CIF
resolution is 352 x 288.
DHCP (Dynamic Host Configuration Protocol): A protocol that network
devices use to obtain an IP address, subnet mask, gateway and DNS
addresses automatically. A DHCP server can be a router, ISP server,
or PC running Internet connection sharing. See Static IP address.
Directory Service: A service that allows users to make video conferencing
calls with telephone numbers. It does this by correlating telephone
numbers to actual public IP addresses.
DNS (Domain Name System): A system used to translate computer names
into IP addresses. For example, a DNS server would translate
www.dlink.com into 192.152.81.1
DSL (Digital Subscribers Line): A technology that delivers digital
information at a high speed through a user’s telephone line. The most
common DSL is ADSL (Asymmetrical Digital Subscribers Line) where
the download speed is usually much higher than the upload speed.
Ethernet: The port on the back of the DVC-1000 VideoPhone that is used to
send and receive data over a network.
Far side: The remote connection of the videoconference. Your connection is
the Local Connection.
Firewall: A security mechanism placed between networks, which restricts
certain types of data to devices behind the firewall.
H.323: Standard defining videoconferencing over the Internet.