Paradyne 8779, 8747, 8777, Hotwire M/SDSL and HDSL2 Termination Units manual EIA-530-A, Ethernet

Glossary

CTS	Clear To Send. A signal indicating that the device is ready for the DTE to transmit data.
	Usually occurs in response to Request To Send (RTS).
CV	Code Violation. Detected when using HDB3 coding format, this is equivalent to a BPV
	when using AMI coding.
DCE	Data Communications Equipment. The equipment that provides the functions required to
	establish, maintain, and end a connection. It also provides the signal conversion required
	for communication between the DTE and the network.
DCLB	Data Channel LoopBack. Loops the data received from the network interface, for all DS0
	channels allocated to the selected port, back to the network.
DS0	Digital signal level 0 (zero). A 64 kbps digital telecommunications signal or channel.
DS1	Digital signal level 1. A digital signal transmitted at the rate of 1.544 Mbps in North
	America.
DSL	Digital Subscriber Line. The non-loaded, local-loop copper connection between the
	customer and the first node within the network.
DSLAM	Digital Subscriber Line Access Multiplexer. A platform for DSL modems that provides
	high-speed data transmission over traditional twisted-pair wiring.
DSR	Data Set Ready. A signal from the modem to the DTE that indicates the modem is turned
	ON and connected to the DTE.
DSX-1	Digital Signal Cross Connect level 1. An interconnection point for terminals, multiplexers
	and transmission facilities.
DTE	Data Terminal Equipment. The equipment, such as a computer or terminal, that provides
	data in the form of digital signals for transmission.
DTLB	Data Terminal LoopBack. Loopback mode that loops the data for a particular synchronous
	data port back to the port just before it is combined with the rest of the T1 data stream.
DTR	Data Terminal Ready. A signal from the DTE to the modem, sent via Pin 20 of the
	EIA-232 interface (V.24 circuit 108/1, /2), that indicates the DTE is turned ON and
	connected to the modem.
E1	A wideband digital interface operating at 2.048 Mbps, defined by ITU recommendations
	G.703 and G.704. It is used primarily outside North America.
EER	Excessive Error Rate. An error rate that is greater than the threshold that has been
	configured in the device.
EIA-530-A	An Electronic Industries Association standard for a high-speed, 25-position, DCE/DTE
	interface.
EOC	Embedded Operations Channel. An in-band channel between DSL devices, used for
	8 kbps management data.
ES	Errored Seconds. A second with one or more error events (one or more CRC error events
	or OOFs).
ESF	Extended SuperFrame. The T1 transmission standard that specifies 24 frames as an
	extended superframe to be used for frame synchronization and to locate signaling bits.
Ethernet	A type of network that supports high-speed communication among systems. It is a widely
	implemented standard for LANs. All hosts are connected to a coaxial cable where they
	contend for network access using a Carrier Sense, Multiple Access with Collision
	Detection (CSMA/CD) paradigm.
ETSI	European Telecommunications Standardization Institute. An organization that produces
	technical standards in the area of telecommunications.

GL-2 April 2000 8700-A2-GB20-00