ALIBI ALI-NVR71128R, User Manual, Page: 231 / 232

223 Alibi™ NVR Firmware V3.6.22 User Manual
APPENDIX A: GLOSSARY
APPENDIX A
Glossary
Dual Stream
: Dual stream is a technology used to record high resolution video locally while transmitting a lower resolution stream
over the network. The two streams are generated by the NVR, with the main stream having a maximum resolution of the camera
and the sub-stream favoring zero-latency encoding.
HDD
: Acronym for Hard Disk Drive. A storage medium which stores digitally encoded data on platters with magnetic surfaces.
DHCP
: Dynamic Host Configuration Protocol (DHCP) is a network application protocol used by devices (DHCP clients) to obtain
configuration information for operation in an Internet Protocol network.
HTTP : Hypertext Transfer Protocol. A protocol to transfer hypertext request and information between servers and browsers over a
network
DDNS : Dynamic DNS is a method, protocol, or network service that provides the capability for a networked device, such as a router
or computer system using the Internet Protocol Suite, to notify a domain name server to change, in real time (ad-hoc) the active
DNS configuration of its configured hostnames, addresses or other information stored in DNS.
NTP : Network Time Protocol. A protocol designed to synchronize the clocks of computers over a network.
NVR : Network Video Recorder. An NVR can be a PC-based or embedded system used for centralized management and storage for IP
cameras, IP Domes and other NVRs.
PTZ : Pan, Tilt, Zoom. PTZ cameras are motor driven systems that allow the camera to pan left and right, tilt up and down and zoom
in and out.
USB : Universal Serial Bus. USB is a plug-and-play serial bus standard to interface devices to a host computer.