Paradyne 7924 manual GL-2, Loopback, Reset

Glossary

FCC	Federal Communications Commission. Board of Commissioners that regulates all U.S.
	interstate, intrastate, and foreign electrical communication systems that originate from the
	United States.
FEBE	Far End Bit Error. Number of errors reported by the remote equipment.
HDB3	High Density Bipolar 3 coding format.
HDSL	High-bit-rate Digital Subscriber Loop. Provides high bandwidth, bi-directional transmission
	over copper wire for both T1 and E1 services.
HTU	Host Termination Unit. A generic reference to either an HTU-C or HTU-R module.
HTU-C	Host Termination Unit ± Central. The module at the CO (central office) or central site end
	of an HDSL connection. Also known as a Network Termination Unit (NTU).
HTU-M	Host Termination Unit ± Maintenance. A carrier±mounted module used to perform
	maintenance operations on one or more HTU-R and HTU-C modules.
HTU-R	Host Termination Unit ± Remote. The module at the CP (customer premises) end of an
	HDSL connection. Also known as a Line Termination Unit (LTU).
LED	Light Emitting Diode. A status indicator that responds to the presence of a certain
	conditions.
loopback	Used to test various portions of a data link in order to isolate an equipment or data line
	problem. A diagnostic procedure that sends a test message back to its origination point.
MOS	Multiframes Out of Sync. A performance statistic that counts the number of multiframes
	received out of sync.
OOF	Out Of Frame. An error condition in which frame synchronization bits are in error. A
	network-reported condition.
reset	A reinitialization of the device that occurs at power-up or in response to a reset command.
RTS	Request to Send. An EIA-lead standard for V.24 circuit CT 105; an input signal
	(DTE-to-DCE).
RXD	Received Data. An EIA-lead standard for V.24 circuit CT 104; an output signal
	(DCE-to-DTE).
T1	A data signaling rate common in the United States. A term for a digital carrier facility used
	to transmit a DS1 formatted signal of 1.544 Mbps.
TXD	Transmit Data. An EIA-lead standard for V.24 circuit CT 103; an input signal
	(DTE-to-DCE).
V.35	ITU-T standard for a high-speed, 34-pin, DCE/DTE interface.

GL-2 October 1997 7924-A2-GB20-30