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Glossary of Terms (continued)
QoS (Quality of Service): Allows.guaranteed.bandwidth.and.packet.delivery.
between.
Router: A.device.that.attaches.two.or.more.network.devices.and.forwards.data.
accordingly. Most consumer type routers act as DHCP servers, NATs
and firewalls.
DMZ (Demilitarized Zone): Devices set up to be in the router's DMZ will see
all network traffic.
Port Forwarding: The.router.will.forward.public-side.incoming.information.to.a.
specified device on the private side. The router will forward only the data
that is received on the specified ports. This is usually set through the
advanced.settings.in.the.router's.web.interface..Also.known.as Virtual
Server or.Firewall Rules.
Ports: A port is a specified path in which data travels. Each type of data that is
transmitted over the Internet travels down a specified port. A router will
forward information from one port to another, and a firewall will open
only a specified number of ports.
SQCIF (Subquarter Common Intermediate Format): An.intermediate.video.
format..SQCIF.resolution.is.128x..The.DVC-1000.VideoPhone.will.
send. SQCIF-sized. video. only. if. the. remote. endpoint. cannot. decode.
CIF.or.QCIF..
SLIC (Subscriber-Line Interface Circuit): Provides. a. phone's. analog. dial.
tone, busy tone, dual-tone multiple-frequency (DTMF) generation and
decoding,.caller.ID.and.ring-signaling.functions..The.SLIC.allows.the.
DVC-1000.to.work.with.a.standard.telephone.without.connecting.to.the.
phone.system.
TCP (Transmission Control Protocol): An. Internet. protocol. used. by. the. .
DVC-1000.VideoPhone.in.addition.to.UDP.
UDP (User Datagram Protocol): The.Internet.protocol.most.commonly.used.by.
the.DVC-1000.VideoPhone.to.send.and.receive.audio.and.video.data..
WAN (Wide Area Network): A.network.that.is.designed.to.span.large.distances..
See.LAN..
network.devices.over.a.network.
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