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Glossary of Terms (continued)
IP address (Internet Protocol Address): An. IP. address. is. a. number. that.
identifies a computer connected to the Internet. Every computer that is
connected.to.the.Internet.must.have.a.unique.IP.address..An.IP.address.
consists.of.four.sections.separated.by.periods..Each.section.contains.
an.8-bit.value.represented.as.a.number.ranging.from.0.to.255.
Public IP address: An.IP.address.that.is.not.behind.a.NAT.router..This.
IP.address.is.visible.from.the.Internet.
Private IP address: An.IP.address.that.is.behind.a.NAT,.which.is.not.
visible.to.the.Internet..The.preferred.ranges.for.private.IP.address.are.
either.12.18.x.x.or.10.0.0.x.
Dynamic IP address: An.IP.address.for.a.particular.network.device.(PC,.
VideoPhone,.router).that.is.dynamically.assigned.by.a.router.or.ISP.and.
will.not.remain.the.same.from.session.to.session..See.DHCP.
Static IP address: An.IP.address.for.a.particular.network.device.(PC,.
VideoPhone,.router).that.doesn't.change..See.DHCP.
ISP (Internet Service Provider): A. commercial. organization. that. provides.
subscribers.with.access.to.the.Internet..
LAN (Local Area Network): A.network.that.is.designed.to.span.small.distances..
These. are. most. commonly. used. in. small. buildings,. businesses. and.
homes.with.multiple.PCs..See.WAN.
MAC (Media Access Control): A unique identifier for the Ethernet hardware
of.your.DVC-1000.
NAT (Network Address Translation): A.technology.that.allows.multiple.network.
devices.to.share.the.same.IP.address..NAT.devices.forward.all.incoming.
and outgoing information to the correct network devices. Most NAT
devices have firewall capabilities.
QCIF (Quarter Common Intermediate Format):.An.intermediate.video.format..
QCIF. resolution. is. 1x144.. The. DVC-1000. VideoPhone. will. send.
QCIF-sized.video.only.if.the.remote.endpoint.cannot.decode.CIF..
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