Alphatech New Link Lift Watch 50 Installation Guide download pdf (Page 5)

1.2. Used terminology
• Ethernet  is a family of  frame-based  computer networking  technologies for 
local area networks (LANs
• LAN    -  a local area network (LAN) is a  computer network  covering a small 
physical area,  like a home,  office,  or small groups  of  buildings, such as a 
school, or an airport.
• 10Base-T  - 10 Mbit/s , it uses 8 position modular connectors, usually called 
RJ45 in the context of Ethernet over twisted pair. The cables usually used are 
four-pair twisted pair cable (though 10BASE-T and 100BASE-TX only actually 
require two of the pairs). Each of the standards support both full-duplex and 
half-duplex   communication.   According   to  the  standards,   they   all   operate 
over distances of up to 100 meters.
• 100Base-TX - so called Fast Ethernet, two pairs of UTP or STP cable, category  
5.
• Twisted pair cabling is a type of wiring in which two conductors (the forward 
and   return   conductors   of   a   single  circuit)   are   twisted   together   for   the 
purposes of canceling out electromagnetic interference (EMI) from external 
sources; for instance, electromagnetic radiation from unshielded twisted pair 
(UTP) cables, and crosstalk between neighboring pairs.
• UTP, Unshielded Twisted Pair
• STP,Shielded Twisted Pair -  the cabling includes metal shielding over each 
individual pair of copper wires. This type of shielding protects cable from 
external EMI (electromagnetic interferences). 
• WEB - World Wide Web (WWW, or web) - a world-wide application of HTTP 
internet protocol 
• HTTP (Hypertext Transfer Protocol) is an internet protocol used originally for 
exchanging hypertext documents in HTML format.
• USB  (Universal Serial Bus) - modern way of connecting external devices to 
the computer.
• Video codek  ("coder  and   decoder")   -   compression  H.263   is  derived  from 
MPEG-4, H.264 is a coder for MPEG-4 AVC format. MPEG-4 is a type of video 
compression - decreasing of data stream video sequence
• JPEG is a standard method of loss compression used for saving digital images
• Voice over Internet Protocol (VoIP) is a technology enabling transmission of 
digitalised   voice   inside   the   packej   of   protocols   family   UDP/TCP/IP   via 
computer network. I tis used for making phone calls via Internet, Intranet or  
any other kind of data connection
• TCP/IP  contains   a   set   of   protocols   for   communication   in   the   computer 
network and it is the main protocol of Internet
5

1 2 3 4 5 6 7 8 9 10 ... 49 50

Comments to this Manuals

No comments

Alphatech New Link Lift Watch 50 Installation Guide Page 5

Comments to this Manuals

Related products and manuals for Door intercom systems Alphatech New Link Lift Watch 50