Carrier Access Adit 3104 user manual Bri

	Glossary
	10Base-T
10Base-T	The most widely installed Ethernet local area networks (LANs) use ordinary telephone
	twisted-pair wire. When used on Ethernet, this carrier medium is known at 10BASE-T.
	10BASE-T supports Ethernet’s 10 Mbps transmission speed.
100Base-TX	Also called “Fast Ethernet”, it is a 100 Mbps version of Ethernet. 100Base-T transmits at
	100 Mbps rather than 10 Mbps. Like regular Ethernet, Fast Ethernet is a shared media LAN.
	All nodes share the 100 Mbps bandwidth. 100Base-TX uses two pairs of Category 5
	cabling, one pair for transmission, one pair for receiving.
Address Resolution	An internet protocol used to map dynamic internet addresses to physical addresses on Local
Protocol (ARP)	Area Networks.
Alternate Mark	The line-coding format in T1 transmission systems whereby successive ones (marks) are
Inversion (AMI)	alternately inverted (sent by polarity opposite that of the preceding mark).
analog	The telephone transmission of voice, video or image. Telephone transmission and/or
	switching that is not digital.
Asynchronous Transfer	Very high speed transmission technology. ATM is a high bandwidth, low-delay,
Mode (ATM)	connection-oriented, packet-like switching and multiplexijng technique. Usable capacity is
	segmented into 53-byte fixed-size cells, consisting of header and information fields,
	allocated to services on demand. The term “asynchronous” applies, as each cell is presented
	to the network on a “start-stop” basis - in other words, asynchronously.
authentication	The process of identifying an individual, usually based on a username and password
	combination, although the process can be many more steps. In security systems,
	authentication is distinct from authorization, which is the process of giving individuals
	access to system objects based on their identity. Authentication merely ensures that the
	individual is who he or she claims to be, but says nothing about the access rights of the
	individual. Authentication in whatever form, is usually followed by authorization.
bandwidth	The width of a communications channel. Analog is typically measured in Hertz (cycles per
	second), a voice conversation is typically measured in bits per second.
Basic Rate Interface	Basic Rate Interface (2b+d) in ISDN.
(BRI)
Bipolar 8-Zero	A coding scheme that maintains ones density.
Substitution
bipolar violation	BPV. A violation is declared for AMI if two successive pulses have the same polarity.
bit	Contraction of the words "binary" and "digit".
Bit Error Rate	The number of erred bits divided by the total number of bits.
broadband	A technology that provides an extremely wide and fast bandwidth so that many people can
	simultaneously use the service. It is generally associated with multiple types of
	transmissions on the same connection such as voice, data, video and digital or analog
	information.

Adit 3104 - Release 1.6 Glossary-5