4806 Glossary DHCP: DHCP (Dynamic Host Configuration Protocol) is a network protocol. It is one of the TCP/IPprotocol 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 IPaddresses. 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 connectto 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 storagedevices. It is the extension specifications of a SATA interface. GPS: GPS (Global Positioning System) is a satellite system, protected by the US military, safelyorbiting thousands of kilometers above the earth. PPPoE: PPPoE (Point to Point Protocol over Ethernet) is a specification for connecting multiplecomputer users on an Ethernet local area network to a remote site. Now the popular mode is ADSLand it adopts PPPoE protocol. WIFI: Wi-Fi is the name of a popular wireless networking technology that uses radio waves toprovide wireless high-speed Internet and network connections. The standard is for wireless localarea networks (WLANs). It is like a common language that all the devices use to communicate toeach other. It is actually IEEE802.11, a family of standard The IEEE (Institute of Electrical andElectronics Engineers Inc.) 3G: 3G is the wireless network standard. It is called 3G because it is the third generation of cellulartelecom standards. 3G is a faster network for phone and data transmission and speed Is over severalhundred 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 asQCIF/CIF/2CIF/DCIF/4CIF encode and one low-rate bit stream for network transmission such asQCIF/CIF encode. It can balance the local storage and remote network transmission. Thedual-stream can meet the difference band width requirements of the local transmission and theremote transmission. In this way, the local transmission using high-bit stream can achieve HDstorage and the network transmission adopting low bit stream suitable for the fluency requirements ofthe 3G network such as WCDMA, EVDO, TD-SCDMA.. On-off value: It is the non-consecutive signal sampling and output. It includes remote sampling andremote output. It has two statuses: 1/0.
