User manual

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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.)
 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.