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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.
Summary of Contents for nvr4208-8p
Page 1: ...Dahua Network Video Recorder User s Manual V 2 7 0 ...
Page 160: ...145 Figure 3 4 3 5 5 NVR41HS W S2 Series Please refer to Figure 3 5 for connection sample ...
Page 171: ...156 Figure 3 18 3 5 19 NVR78 Series Please refer to Figure 3 19 for connection sample ...
Page 172: ...157 Figure 3 19 3 5 20 NVR78 16P Series Please refer to Figure 3 20 for connection sample ...
Page 173: ...158 Figure 3 20 3 5 21 NVR78 RH Series Please refer to Figure 3 21 for connection sample ...
Page 174: ...159 Figure 3 21 3 5 22 NVR70 Series Please refer to Figure 3 22 for connection sample ...
Page 175: ...160 Figure 3 22 3 5 23 NVR70 R Series Please refer to Figure 3 23 for connection sample ...
Page 176: ...161 Figure 3 23 3 5 24 NVR42V 8P Series Please refer to Figure 3 24 for connection sample ...
Page 177: ...162 Figure 3 24 ...
Page 243: ...228 Figure 4 89 Figure 4 90 ...
Page 244: ...229 Figure 4 91 Figure 4 92 ...
Page 259: ...244 Figure 4 110 Figure 4 111 ...
Page 260: ...245 Figure 4 112 Figure 4 113 ...
Page 261: ...246 Figure 4 114 Figure 4 115 ...
Page 263: ...248 Figure 4 117 Figure 4 118 ...
Page 355: ...340 Figure 5 55 Figure 5 56 ...
Page 356: ...341 Figure 5 57 Figure 5 58 Figure 5 59 ...
Page 367: ...352 Figure 5 73 Figure 5 74 ...
