| Term | Definition |
|---|---|
| NA |
Numerical Aperture
Hits: 527 |
| NAB |
National Association of Broadcasters
Hits: 558 |
| NADG |
North American Digital Group
Hits: 497 |
| NAK |
Negative Acknowledgement
Hits: 537 |
| NAMAS |
NAtional Measurement Accreditation Service
Hits: 511 |
| NAP |
Network Access Points
Hits: 517 |
| NAT4882 |
Industries First IEEE-488.2 Controller Chip
Hits: 605 |
| NAU |
Network Addressable Unit
Hits: 510 |
| NBFM |
Narrow Band Frequency Modulation
Hits: 576 |
| NBS |
National Bureau of Standards
Hits: 586 |
| NC |
Network Congestion / No Connection
Hits: 548 |
| NCC |
National Control Centers Telecommunication System
Hits: 505 |
| NCI |
Network Control Interface
Hits: 526 |
| NCP |
Network Control Program
Hits: 562 |
| NCTA |
North American Cable Television Association
Hits: 464 |
| ND:YAG |
Neodymium Yttrium Aluminum Garnet
Hits: 457 |
| NE |
Network Element
Hits: 529 |
| NEC |
Network Electrical Code
Hits: 604 |
| NEMA |
National Electrical Manufactures Association
Hits: 551 |
| NEP |
Noise Equivalent Power
Hits: 520 |
| NEXT |
Near-End Crosstalk
Hits: 494 |
| NF |
Noise Figure
Hits: 572 |
| NFAS |
Non-Frame Alignment Signal
Hits: 538 |
| NFS |
Network Filing System
Hits: 461 |
| NIC |
Network Information Carrier
Hits: 470 |
| NICAM |
Near Instantaneous Companded Audio Multiplex
Hits: 522 |
| NICQA |
National Inspection Council Quality Assurance
Hits: 591 |
| NID |
Network Interface Device
Hits: 508 |
| NII |
National Information Infrastructure
Hits: 495 |
| NIIR |
Russian Scientific Research Institute of Radio Communications
Hits: 454 |
| NIT |
Network Information Table (multiplex) (part of SI)
Hits: 520 |
| NIU |
Network Interface Unit
Hits: 458 |
| nm |
nanometres
Hits: 515 |
| NML |
Network Management Layer
Hits: 537 |
| NMS |
Network Management System
Hits: 516 |
| NMTI |
Node Management Terminal Interface
Hits: 516 |
| NNI |
Network-Network Interface; Network-Node Interface
Hits: 555 |
| NOAA |
National Oceanographic and Atmospheric Administration
Hits: 535 |
| NOC |
Network Operations Center
Hits: 527 |
| NRE |
Non-Recurring Engineering
Hits: 567 |
| NRZ |
Non Return to Zero
Hits: 493 |
| NRZI |
Non Return to Zero Inverted
Hits: 499 |
| NSF |
Non-Standard Facilities
Hits: 530 |
| NT |
Network Termination
Hits: 573 |
| NTSC |
National Television Standards Committee
Hits: 500 |
| NTU |
Network Termination Unit
Hits: 506 |
| NUI |
Network User Identification
Hits: 493 |
| NVM |
Non-Volatile Memory
Hits: 465 |
| NVOD |
Near Video On Demand
Hits: 512 |
| NVP |
Nominal Velocity of Propagation.
Hits: 533 |
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Communications House , 41a Market Street, Watford, Herts, WD18 0PN.