Paradyne HOTWIRE 7986 manual Loopback, Reset, Router, Telnet

Glossary

LED	Light Emitting Diode. A light or status indicator that glows in response to the presence of a
	certain condition (e.g., an alarm).
LLB	Line LoopBack. A test in which the received signal on the network interface is looped back
	to the network without change.
loopback	A diagnostic procedure that sends a test message back to its origination point. Used to
	test various portions of a data link in order to isolate an equipment or data line problem.
LOS	Loss of Signal. The T1 line condition where there are no pulses.
LTU	Line Termination Unit. The control unit on the network end of a link. (The NTU is on the
	customer premises end.)
MCC	Management Communications Controller. The DSLAM circuit card used to configure and
	monitor the DSLAM.
MIB	Management Information Base. A database of managed objects used by SNMP to provide
	network management information and device control.
MIB II	MIB Release 2. The current Internet-standard MIB, defined by RFC 1213.
M/SDSL	Multirate SDSL.
MTSO	Mobile Telephone Switching Office. A generic name for the main cellular switching center
	which supports multiple base stations.
NMS	Network Management System. A computer system used for monitoring and controlling
	network devices.
NTU	Network Termination Unit. The unit on the customer premises end of a link. (The LTU is on
	the network end.)
OOF	Out Of Frame. An error condition in which frame synchronization bits are in error.
reset	A reinitialization of the device that occurs at power-up or in response to a reset command.
RLB	Repeater LoopBack. Loops the signal being sent to the network back to the DTE
	Drop/Insert and data ports after it has passed through the framing circuitry of the device.
router	A device that connects LANs by dynamically routing data according to destination and
	available routes.
RTS	Request to Send. A signal from the DTE to the device, indicating that the DTE has data to
	send. V.24 circuit 105.
RXD	Received Data. Pin 3 of the EIA-232 interface that is used by the DTE to receive data from
	the modem. Conversely, the modem uses Pin 3 to transmit data to the DTE.
SDSL	Symmetrical Digital Subscriber Line. A technique for the use of an existing twisted pair line
	that permits high bandwidth, bidirectional transmission.
SES	Severely Errored Seconds. Usually defined as a second during which a specific number of
	CRC errors was exceeded, or an OOF or other critical error occurred.
SNMP	Simple Network Management Protocol. Protocol for open networking management.
TCP/IP	Transmission Control Protocol/Internet Protocol. The dominant protocol suite in the
	worldwide Internet, TCP allows a process on one machine to send data to a process on
	another machine using the IP. TCP can be used as a full-duplex or one-way simplex
	connection.
Telnet	Virtual terminal protocol in the Internet suite of protocols. Allows the user of one host
	computer to log into a remote host computer and interact as a normal terminal user for that
	host.

7986-A2-GB20-00 September 1998 GL-3