Acronym

Description

N(B+D)

Number of B and D channels

N00

700, 800, 900 Core Team

N00

800 Routing Control

N-2000

IBM PC Terminal Adapter

N-3000

Conferencing Unit

N-4000

NT1 Interface

NA

Network Administration Department

NA

Numerical Aperture

NABRB

National Accounts Business Review Board

NAC

Network Access Computer

NAC

Network Administration Center

NAC

Network Administrative Computer

NAC

Network Applications Center (Northern Telecom Inc. DMS-100)

NACC

National Accounts Control Center

NACMS

Network Administrative Computer Management System

NACPS

National Account Customer Profile System

NAD

National Accounts Division - obsolete USS division (S)

NADP

North American Dialing Plan

NAE

National Accounts Engineering

NAG

Numerical Algorithms Group

NAK

Negative acknowledgment (Bisync control character)

NAM

National Account Manager

NAM

National Account Manager (S)

NAM

Network Access Method

NAN

No Action Necessary

NAND

Not and

NANP

North American Numbering Plan

NAP

Network Access Pricing

NAP

Network Administrative Processor

NAPI

Numbering/Addressing Plan Identifier

NAPS

National Accounts Proposal System

NAS

North American Standard

NASA

National Aeronautics and Space Administration

NASC

Number Administration Service Center

NASD

Network Administrative Systems Development

NASM

National Account Service Manager

NATA

North American Telecommunications Association

NATS

National Activity to Test Software

NAU

Network Access Unit

NAU

Network Addressable Unit

NAUCS

Network Access Usage And Cost System

NBD

Non-Business Day

NBD

Normal Business Day

NBD

Not Been Determined

NBH

Network Busy Hour

NBLH

Network Blockage in Heavy Traffic

NBLN

Network Blockage in Normal Traffic

NBS

National Bureau of Standards

NC

Network Clock

NC

Network Connect

NC

Network Connection

NC

Network Crosspoint (shelf)

NC signal

No Circuit signal

NCA

National Command Authority

NCC

National Computer Conference

NCC

Network Control Center

NCC

Network Control Center (NOCC)

NCD

Network Call Distributor

NCD

Noncheck Dummies

NCD

Number of Calls Delayed

NCEFT

National Commission on Electronic Funds Transfers

NCH

Number of Calls Handled

NCLIS

National Commission on Libraries and Information Science

NCLK

Network Clock

NCLK2

Network Clock - Model 2

NCOS

Network Class of Service

NCP

Network Control Point

NCP

Network Control Program

NCR

National Capital Region

NCR

National Cash Register

NCR

Number of Calls Received

NCRT

No Circuit Route Treatment

NCS

National Communications System

NCSOC

National Communications System Operations Center

NCT

Network Control and Timing

NCTE

Network Channel Terminating Equipment

NCU

Network Clock Unit

NDC

No Double Connection

NDCS

Network Data Control System

NDD

Network Descriptive Database

NDI

Network Development Integration

NDL

Network Development Laboratory

NDRO

Non-Destructive Readout

NDSS

Network Decision Support System

NDT

Net Data Throughput

NDV

Network Development Validation

NE

Network Element

NEA

National Endowment of the Arts

NEBS

New Equipment Building Systems (or Standards)

NEC

National Electrical Code

NECC

National Emergency Control Center

NED

Network Element Diagnostic

NEG

Data Network Recovery Group

NEP

Noise Equivalent Power

NES

Noise Equivalent Signal

NESC

National Electrical Safety Code

NET

Network

NetBIOS

Network Basic Input Output System

NETC

Network Frame Plane Combined

NETMAN

Network Management

NETS

National Emergency Telecommunications System

NETS

National Emergency Telephone System

NEWT

Network Engineer Workstation Tool (CN)

NEWT

Network Engineering Workstation Tool

NFAD

Network Features Advanced Development

NFAH

National Foundation on the Arts and the Humanities

NFD

Network Facility Design

NFE

Network Facility Engineer

NFI

Network Facilities Implementation

NFMS

Network Facility Management System

NFPA

National Fire Protection Association

NHM

Network Health Monitor

NI

Network Interface (shelf)

NIA

Network Interface Adapter

NIATECH

Network Integration Of Advanced Technologies

NIC

Network Interface Card

NID

Network Information Database

NID

Network Interface Development

NID

Network Interface Device

NIH

National Institutes of Health

NIM

Network Interface Machine

NIOD

Network Inward and Outward Dialing

NIP

Network Interface Processor

NIP

Nucleus Intialization Program

NIS

Network Information System

NIS

Network Inventory System

NIST

National Institute of Standards and Technology

NIU

Network Interface Unit

NLDM

Network Logical Data Manager

NLP

Nonlinear Programming

NLT

No Line Insulation Test

nm

Nanometer

NM

Network Management

NM

Network Management

NM

Network Module

NMA

National Micrographics Association

NMA

Network Monitoring and Analysis

NMC

Network Management Center

NMC

Network Message Controller

NMC

Network Message Controller

NMC

Network Module Controller

NMCC

National Military Command Center

NMCC

Network Management Command and Control (NOCC)

NMCC

Network Management Command and Control System

NMCC

Network Management Control Center (NOCC)

NMCCP

Network Management and Control Center Peripherals (NOCC)

NMCCS

Network Management and Control Center System (NOCC)

NMCR

Network Management and Control Room (NOCC)

NMIS

Network Management Information System

NMIS

Network Management Information System

N-MOS (NMOS)

Negative Metal-Oxide Semiconductor

NMOS (N-MOS)

Negative Metal-Oxide Semiconductor

NMP

Next Milestone Plan (IS)

NMS

Network Management System

NMSG

Network Management Services Group

NNI

Network to Network Interface

NNMC

Naval National Medical Center

NNX

Near Number Exchange

NNX

Network Number Exchange

NOAA

National Oceanic and Atmospheric Administration

NOC

Network Operations Center

NOCC

Network Operations Control Center (generic)

NOD

Network Outward Dialing

NOH

No Receiver Off-Hook Tone

NOMDA

National Office Machines Dealers Association

NOMS

Network Operating Management System

NOPS

New Order Processing System

NORC

Naval Ordnance Research Computer

NOS

Network Operating System

NOS

Network Operations Specialist

NOS

Network Optimization System

NOSA

Network Operations Service Acceptance

NOSA

Notice Of Service Availability

NOTIS

Network Operations Trouble Information System

NP

New Peripheral

NP

Nondeterministic Polynomial

NPA

Numbering Plan Area

NPC

Network Policy Council

NPC

Network Processing Cards

NPC

North Pacific Cable

NPD

Network Protection Device

NPL

Network Planning Letter

NPO

Network Provisioning Organization

NPSI

Network Control Program Packet Switching Interface

NQD

Network Quality Department

NRAG

Network Ring Again

NRC

National Repair Center

NRC

Non-recurring Charge

NRC

Non-Recurring Charge

NRC

Nuclear Regulatory Commission

NRL

Naval Research Laboratory

NRRD

National Repair and Return Depot

NRS

Network Resource Selector

NRZ

Nonreturn to Zero

NRZI

Nonreturn to Zero Inverted

NS

Network Server

NSA

National Security Agency

NSA

Network Support Area

NSA

Network Switch Administration

NSAP

Network Service Access Point

NSC

National Service Center

NSC

National Status Center

NSC

Network Speed Calling

NSC

Network Status Center

NSCS

Network Service Center System

NSD

National Sales Division

NSD

Network Systems Development

NSEC

Nanosecond

NSEP

National Security and Emergency Preparedness

NSEP

Network Switching Engineering Practices

NSF

National Science Foundation

NSF

Network Specific Facility

NSG

Network Services Group

NSI

Network Services, Inc. (Bell Atlantic)

NSM

Network Service Manager

NSMS

Network Status and Monitoring System

NSMS

Network Staus and Monitoring System

NSO

National Service Organization (CS)

NSP

Network Service Processor

NSP

Network Services Platform (DATAP)

NSPD

Network Systems Planning and Development

NSPDC

Network Systems and Product Demonstration Center

NSPDM

Network Systems Planning and Development Methodology

NSPI

New Services Planning and Implementation

NSPMP

Network Switching Performance Measurement Plan

NSS

National Surveillance System

NSS

Network Support Systems

NSS

Network Surveillance System

NSSD

Network Support Systems Development

NSSDM

Network Support Systems Development Methodology

NSTAC

National Security Telecommunications Advisory Committee

NSV

Network Surveillance System

NSWC

Naval Surface Warfare Center

NT

Network Termination

NT1

Network Termination - Type 1 (Basic ISDN U to T interface; U = loop interface; T = terminal to network)

NTAC

National Technical Assistance Center

NTAC

Network Technical Assistance Center

NTAS

Network Traffic Accounting System

NTC

National Training Center

NTEC

National Telecommunications Education Committee

NTI

Network Terminating Interface

NTI

Northern Telecom Inc.

NTI

Northern Telecom, Incorporated.

NTIA

National Telecommunications Information Administration

NTIS

National Technical Information Service

NTISSI

National Telecommunications and Information Systems Security Instruction

NTISSP

National Telecommunications and Information Systems Security Policy

NTMS

National Telecommunications Management System

NTN

Network Terminal Number

NTP

Network Transition Plan

NTP

Northern Telecom Practices

NTP

Northern Telecom Practices

NTPF

Number of Terminals Per Failure

NTS

Nodal Timing Supply

NTSC

National Television Standards Committee (video standards)

NTTMP

Network Trunk Transmission Measurement Plan

NTU

Network Terminating Unit

NUC

Nailed-Up Connection

NUI

Network User Identifier

NUI

Network User Identifier

NVS

Network Voice Services

NVT

Network Virtual Terminal

NWM

Network Management

NWS

Network Scheduling

NWTP

Network WATS Term Plan

NXX

A three-digit code assigned to an NPA

NYNEX

New York Telephone and New England Telephone (Regional Holding Company)