Grundig GRN-R5128N, Руководство пользователя

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4. Edit the corresponding parameters.
- Operator and Guest:
You can edit the user information, including the user name, password, permission level and MAC address. Check
the checkbox next to “Change Password” if you want to change the password, and input the new one in the text
field of “Password” and “Confirm”.
- Admin:
You are only allowed to edit the password and MAC address. Check the checkbox next to “Change Password” if
you want to change the password, and input the correct old password in the field “Old Password”, and the new
one in the text fields of “New Password” and “Confirm”.
18. 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 DVR, with the main stream
having a maximum resolution of 4CIF and the sub-stream having a maximum resolution of CIF.
- HDD: Acronym for a Hard Disk Drive. A storage medium which stores digitally encoded data on platters with
magnetic surfaces.
- DHCP: Dynamic Host Con fi guration Protocol (DHCP) is a network application protocol used by devices (DHCP
clients) to obtain the configuration information for the operation on an Internet Protocol network.
- HTTP: Acronym for the Hypertext Transfer Protocol which is a protocol to transfer the hypertext request and
information between servers and browsers over a network.
- PPPoE: PPPoE, Point-to-Point Protocol over Ethernet, is a network protocol for encapsulating the 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 the Ethernet and in plain Metro Ethernet networks.
- 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 on the DNS.
- Hybrid DVR: A hybrid DVR is a combination of a DVR and NVR.
- NTP: Acronym for the Network Time Protocol which is a protocol designed to synchronise the clocks of
computers over a network.
- NTSC: Acronym for National Television System Committee. NTSC is an analogue 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 a Network Video Recorder. An NVR can be a PC-based or an embedded system used for
centralised management and as a storage for IP cameras, IP Domes and other DVRs.
- DVR: Acronym for a Digital Video Recorder.
- PAL: Acronym for the Phase Alternating Line. PAL is also another video standard used in broadcast televisions
systems in large parts of the world. The PAL signal contains 625 scan lines at 50Hz.
- PTZ: Acronym for 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: Acronym for the Universal Serial Bus. USB is a plug-and-play serial bus standard to interface devices to a
host computer.
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