Paradyne HOTWIREt 7984 User Manual page 117

HDSL
IP
IP address
LAN
LED
LIU
LLB
loopback loopback
LOS
LTU
MCC
M/HDSL
MIB
MIB II
M/SDSL
MTSO
NMS
NTU
OOF
reset
RLB
router
RTS
RXD
SDSL
7984-A2-GB20-10
High-bit-rate Digital Subscriber Line. A technique for high bandwidth, bidirectional
transmission over copper wire for T1 and E1 services.
Internet Protocol. An open networking protocol used for internet packet delivery.
Internet Protocol address. The address assigned to an internet host.
Local Area Network. A privately owned and administered data communications network
limited to a small geographic area.
Light Emitting Diode. A light or status indicator that glows in response to the presence of a
certain condition (e.g., an alarm).
Line Interface Unit. A physical layer data transmitter and receiver.
Line LoopBack. A test in which the received signal on the network interface is looped back
to the network without change.
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.
Loss of Signal. The line condition where there are no pulses.
Line Termination Unit. The control unit on the network end of a link. (The NTU is on the
customer premises end.)
Management Communications Controller. The DSLAM circuit card used to configure and
monitor the DSLAM.
Multirate High-bit-rate Digital Subscriber Line. (See HDSL.)
Management Information Base. A database of managed objects used by SNMP to provide
network management information and device control.
MIB Release 2. The current Internet-standard MIB, defined by RFC 1213.
Multirate Symmetric Digital Subscriber Line. (See SDSL.)
Mobile Telephone Switching Office. A generic name for the main cellular switching center
which supports multiple base stations.
Network Management System. A computer system used for monitoring and controlling
network devices.
Network Termination Unit. The unit on the customer premises end of a link. (The LTU is on
the network end.)
Out Of Frame. An error condition in which frame synchronization bits are in error.
A reinitialization of the device that occurs at power-up or in response to a reset command.
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.
A device that connects LANs by dynamically routing data according to destination and
available routes.
Request to Send. A signal from the DTE to the device, indicating that the DTE has data to
send. V.24 circuit 105.
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.
Symmetric Digital Subscriber Line. A technique for the use of an existing twisted-pair line
that permits high bandwidth, bidirectional transmission.
February 1999
Glossary
GL-3