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6 Glossary
DHCP:
DHCP (Dynamic Host Configuration Protocol) is a network protocol. It is one of the TCP/IP
protocol cluster. It is principally used to assign temporary IP addresses to computers on a network.
DDNS:
DDNS (Dynamic Domain Name Server) is a service that maps Internet domain names to IP
addresses. This service is useful to anyone who wants to operate a server (web server, mail server,
ftp server and etc) connected to the internet with a dynamic IP or to someone who wants to connect
to an office computer or server from a remote location with software.
eSATA
: eSATA(External Serial AT) is an interface that provides fast data transfer for external storage
devices. It is the extension specifications of a SATA interface.
GPS:
GPS (Global Positioning System) is a satellite system, protected by the US military, safely
orbiting thousands of kilometers above the earth.
PPPoE:
PPPoE
(
Point to Point Protocol over Ethernet) is a specification for connecting multiple
computer users on an Ethernet local area network to a remote site. Now the popular mode is ADSL
and it adopts PPPoE protocol.
WIFI:
Wi-Fi is the name of a popular wireless networking technology that uses radio waves to
provide wireless high-speed Internet and network connections. The standard is for wireless local
area networks (WLANs). It is like a common language that all the devices use to communicate to
each other. It is actually IEEE802.11, a family of standard The IEEE (Institute of Electrical and
Electronics Engineers Inc.)
3G:
3G is the wireless network standard. It is called 3G because it is the third generation of cellular
telecom standards. 3G is a faster network for phone and data transmission and speed Is over several
hundred kbps. Now there are four standards: CDMA2000, WCDMA, TD-SCDMA and WiMAX.
Dual-stream:
The dual-stream technology adopts high-rate bit stream for local HD storage such as
QCIF/CIF/2CIF/DCIF/4CIF encode and one low-rate bit stream for network transmission such as
QCIF/CIF encode. It can balance the local storage and remote network transmission. The
dual-stream can meet the difference band width requirements of the local transmission and the
remote transmission. In this way, the local transmission using high-bit stream can achieve HD
storage and the network transmission adopting low bit stream suitable for the fluency requirements of
the 3G network such as WCDMA, EVDO, TD-SCDMA..
On-off value:
It is the non-consecutive signal sampling and output. It includes remote sampling and
remote output. It has two statuses: 1/0.
Содержание NVR21-S2 SERIES
Страница 1: ...Dahua Network Video Recorder User s Manual V 4 3 0...
Страница 138: ...124 Figure 3 5 3 6 6 NVR42N Series Please refer to Figure 3 6 for connection sample Figure 3 6...
Страница 142: ...128 Figure 3 11 3 6 12 NVR42V 8P Series Please refer to Figure 3 12 for connection sample...
Страница 143: ...129 Figure 3 12...
Страница 157: ...143 Figure 4 15 Step 2 Click device display edit interface See Figure 4 16...
Страница 220: ...206 Figure 4 93 Figure 4 94...
Страница 240: ...226 Figure 4 110 Figure 4 111 Figure 4 112...
Страница 251: ...237 Figure 4 123 Figure 4 124...
Страница 253: ...239 Figure 4 126 Click draw button to draw the zone See Figure 4 127...
Страница 257: ...243 Figure 4 130 Click Draw button to draw a zone See Figure 4 131 Figure 4 131...
Страница 262: ...248 Figure 4 136 Click draw button to draw the zone See Figure 4 137...
Страница 275: ...261 Figure 4 148 Figure 4 149...
Страница 276: ...262 Figure 4 150 Figure 4 151...
Страница 387: ...373 Figure 5 60 Figure 5 61...
Страница 388: ...374 Figure 5 62 Figure 5 63...
Страница 412: ...398 Figure 5 96 Figure 5 97...
Страница 418: ...404 Figure 5 106 5 10 4 4 Record Control The interface is shown as in Figure 5 107 Figure 5 107...
