Important Notes; Glossary - Grundig GD-RT-AC3016N User Manual

18. Important Notes

18.1 Glossary

Dual-Stream: Dual-stream is a technology used to record high resolution video locally
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while transmitting a lower resolution stream over the network. The two streams are
generated by the DVR, with the main stream having a maximum resolution of 1080P
and the sub-stream having a maximum resolution of CIF.
DVR: Acronym for Digital Video Recorder. A DVR is device that is able to accept
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video signals from analog cameras, compress the signal and store it on its hard
drives.
HDD: Acronym for Hard Disk Drive. A storage medium which stores digitally encoded
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data on platters with magnetic surfaces.
DHCP: Dynamic Host Configuration Protocol (DHCP) is a network application
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protocol used by devices (DHCP clients) to obtain configuration information for
operation in an Internet Protocol network.
HTTP: Acronym for Hypertext Transfer Protocol. A protocol to transfer hypertext
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request and information between servers and browsers over a network
PPPoE: PPPoE, Point-to-Point Protocol over Ethernet, is a network protocol for
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encapsulating Point-to-Point Protocol (PPP) frames inside Ethernet frames. It is used
mainly with ADSL services where individual users connect to the ADSL transceiver
(modem) over Ethernet and in plain Metro Ethernet networks.
DDNS: Dynamic DNS is a method, protocol, or network service that provides the
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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.
Hybrid DVR: A hybrid DVR is a combination of a DVR and NVR.
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NTP: Acronym for Network Time Protocol. A protocol designed to synchronize the
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clocks of computers over a network.
NTSC: Acronym for National Television System Committee. NTSC is an analog
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television standard used in such countries as the United States and Japan. Each
frame of an NTSC signal contains 525 scan lines at 60Hz.
NVR: Acronym for Network Video Recorder. An NVR can be a PC-based or
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embedded system used for centralized management and storage for IP cameras, IP
Domes and other DVRs.
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