ACCULINK 336x E1 NTU

link trap

A trap that identifies the condition of the communications interface (linkDown or

 

linkUp traps).

LLB

Line Loopback. Loops the received signal on the network interface back to the

 

network without change.

local loop

A twisted-wire-pair cable that connects the subscriber's premises to the local

 

switching office.

LOF

Loss Of Frame. The inability to maintain frame synchronization.

LOFC

Loss Of Frame Count. A count of the number of LOFs declared.

loopback test

A test that verifies a device's operation by connecting the device's output to the

 

device's input.

LOS

Loss Of Signal. The E1 line condition where there are no pulses.

Lpbk branch

Local Loopback branch of the E1 NTU menu tree.

LQR

Link Quality Reports.

LTU

Line Termination Unit. The control unit on the network end of an HDSL link. (The

 

NTU is on the customer end.)

manager (SNMP)

The device that queries agents for management information, or receives unsolicited

 

messages (traps) indicating the occurrence of specific events.

MB

Megabytes. A unit of memory measurement equal to approximately one million

 

bytes (typically 1,048,576 bytes).

Mbps

Megabits per second (million bits per second).

menu tree

A display of E1 NTU functions that are accessed by selecting various branches

 

(Status, Test, etc.).

MFA

Multiframe Alarm. A condition in which two consecutive multiframe alignment

 

signals are received in error.

MIB

Management Information Base. A database of managed objects used by SNMP to

 

provide network management information.

MIB II

MIB Release 2. The current Internet-standard MIB.

MRU

Maximum Request Unit.

module

A compact assembly functioning as a component in a larger system or unit.

multiframe

An ordered, functional sequence of frames on a multiplexed digital circuit.

multiplex

To interleave or simultaneously transmit two or more messages on a single circuit.

network

A configuration of data processing devices for information exchange.

network interface

The HDSL Network interface connector on the rear panel of the E1 NTU.

NMS

Network Management System. A computer system used for monitoring and

 

controlling network devices.

node

A connection or switching point on the network.

NTU

Network Termination Unit. The tributary unit on the customer end of an HDSL

 

link. (The LTU is on the network end.)

object (SNMP)

A specific item within a Management Information Base (MIB).

OOF

Out Of Frame. An error condition in which frame synchronization bits are in error.

option

A hardware or software function that can be selected or enabled as part of a

 

configuration process.

PAP

Password Authentication Protocol.

Glossary-6

December 1996

3360-A2-GB20-20

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Paradyne 336x E1 manual Lof