Glossary

FTP

File Transfer Protocol. A TCP/IP standard protocol that allows a user on one host to access

 

and transfer files to and from another host over a network, provided that the client supplies

 

a login identifier and password to the server.

G.703

An ITU recommendation for the physical and logical characteristics of hierarchical digital

 

devices.

G.704

An ITU recommendation for synchronous frame structures.

HDB3

High Density Bipolar Three Zeros Substitution. A line coding technique used to

 

accommodate the ones density requirements of E1 lines.

HDSL

High-bit-rate Digital Subscriber Line. A technique for high bandwidth, bidirectional

 

transmission over copper wire for T1 and E1 services.

IP

Internet Protocol. An open networking protocol used for internet packet delivery.

IP address

Internet Protocol address. The address assigned to an internet host.

LAN

Local Area Network. A privately owned and administered data communications network

 

limited to a small geographic area.

LED

Light Emitting Diode. A light or status indicator that glows in response to the presence of a

 

certain condition (e.g., an alarm).

LIU

Line Interface Unit. A physical layer data transmitter and receiver.

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 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.

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.

PPP

Point-to-Point Protocol. A protocol for packet transmission over serial links, specified by

 

Internet RFC 1661.

receiver

A circuit that accepts data signals from a transmitter.

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.

8784-A2-GB20-30

February 2001

GL-3

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Paradyne 8784 manual 703, 704, IP address, Receiver, Reset