Verint Nextiva S1900e Series, Руководство пользователя

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Glossary
56 Verint Video Solutions
Access Point A device acting as a communication switch for connecting wireless edge
devices to a wired LAN. Access points are mainly used with wireless transmitters to transfer
wireless content onto the wired IP network.
APIPA (Automatic Private IP Addressing) A feature of Windows-based operating systems
that enables a device to automatically assign itself an IP address when there is no Dynamic
Host Configuration Protocol (DHCP) server available to perform that function. Also known as
AutoIP .
Bridge A device linking a wireless network to a wired Ethernet network. The newest Nextiva
bridge is the S3100.
Camera See S2500e , S2600e Series , or S2700e Series .
CCTV (closed circuit television) A television system in which signals are not publicly
distributed; cameras are connected to television monitors in a limited area such as a store,
an office building, or on a college campus. CCTV is commonly used in surveillance systems.
CIF (common intermediate format) A video format that easily supports both NTSC and PAL
signals. Many CIF flavors are available, including CIF, QCIF, 2CIF, and 4CIF. Each flavor
corresponds to a specific number of lines and columns per video frame.
CLI (command line interface) A textual user interface in which the user responds to a
prompt by typing a command.
Codec (coder/decoder) A device that encodes or decodes a signal.
Configuration Assistant A proprietary graphical program used to configure and update
the firmware of the S1100 edge devices.
DCE (data communication equipment) In an RS-232 communication channel, a device that
connects to the RS-232 interface. Nextiva edge devices and modems are DCE.
Decoder See Receiver .
DHCP (Dynamic Host Configuration Protocol) A communication protocol that lets network
administrators manage centrally and automate the assignment of Internet Protocol (IP)
addresses in a network.
DTE (data terminal equipment) In an RS-232 communication channel, the device to which
the RS-232 interface connects. Computers, switches, multiplexers, cameras, and keyboards
are DTE.
DVR (digital video recorder) A device (usually a computer) that acts like a VCR in that it has
the ability to record and play back video images. The DVR takes the feed from a camera and
records it into a digital format on a storage device which is most commonly the hard drive.
Edge Device A Nextiva device transmitting or receiving video signals through an IP
network. The devices can be wireless or wired; some transmitters are IP cameras.
Encoder See Transmitter .
Ethernet A local area network (LAN) architecture using a bus or star topology and
supporting data transfer rates of 10, 100, and 1000 Mbps. It is one of the most widely
implemented LAN standards. The 802.11 protocols are often referred to as “wireless
Ethernet.”
Firmware Software stored in read-only memory (ROM) or programmable ROM (PROM),
therefore becoming a permanent part of a computing device.