Paradyne 3160-A2-GB21-50 manual Dsr

ACCULINK 316x DSU/CSU

downstream device	A device that is connected farther from the host computer.
drop/insert	An interconnection point for terminals, multiplexers, and transmission facilities.
	Individual channels may be inserted into the aggregate stream or dropped out to
	accommodate specific applications.
DSR	Data Set Ready. V.24 circuit 107.
DSU	Data Service Unit. Data communications equipment which transmits digital data
	over a private line. Also used for limited distance communications over the local
	area network when a high-speed modem is not needed.
DSX-1	Digital Signal Cross Connect level 1. An interconnection point for terminals,
	multiplexers and transmission facilities.
DS0	Digital Signal Level 0. A 64 kbps standard signal or channel.
DS0 channel allocation	Assigning specific DS0 channels in the DSU/CSU to specific interfaces (network,
	DTE Drop/Insert, etc.).
DS1	Digital Signal level 1. A signal of 1.544 Mbps in North America.
DS1/E1 MIB	Defines objects for managing the network and DTE Drop/Insert interfaces on the
	DSU/CSU.
DTE	Data Terminal Equipment. The equipment, such as a computer or terminal, that
	provides data in the form of digital signals.
DTE Drop/Insert interface	The Drop/Insert (DSX-1) interface on the rear panel of the DSU/CSU.
DTLB	Data Terminal Loopback. Loops the data received from the selected port, for all
	DS0 channels allocated to the port, back out the port.
DTMF	Dual Tone Multifrequency. The basis of operation for a pushbutton telephone.
DTR	Data Terminal Ready. V.24 circuit 108/1, /2.
D4	The transmission standard that specifies 12 frames as a superframe that is used for
	frame synchronization and to locate signaling bits.
EDL	Embedded Data Link. The 8 kbps in-band performance channel that provides
	4 kbps of user bandwidth for the support of an SNMP management link.
EER	Excessive Error Rate. An error rate that is greater than the threshold in the
	DSU/CSU.
EIA	Electronic Industries Association. An organization providing standards for the data
	communication industry.
EIA 530A	An EIA standard for a high-speed, 25-position, DCE/DTE interface.
Enterprise MIB	MIB objects unique to Paradyne devices.
enterprise-specific trap	A trap unique to Paradyne devices.
EON	End of Number.
error	A discrepancy between a measured or computed value or condition and the true or
	specified value or condition.
ES	Errored seconds. Seconds with one or more ESF error events.
ESD	Electrostatic discharge. An undesirable discharge of static electricity that can
	damage equipment and degrade electrical circuitry.
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.
E1	A wideband digital interface operating at 2.048 Mbps.

Glossary-4 January 1997 3160-A2-GB21-50