| N | The rate of which a PLL Multiplies the reference frequency derived ffom a crystal |
| NACC | Network Assisted Cell Change |
| NAM | Number Assignment Module |
| NAMPS | Narrowband Advanced Mobile Phone System |
| N-AMPS | Narrowband Advanced Mobile Phone Service |
| NAN | NOT AND |
| NANC | North American Numbering Council |
| Nanp | North American Numbering Plan |
| NAP | Network Access Point |
| NARUC | National Association of Regulatory Utility Commissioners |
| NAS | Network Access Server |
| NASA | National Aeronautics and Space Administration |
| NAT | Network Address Translation |
| NATA | North American Telecommunications Association |
| NB SRR | Narrow Band Short Range Radar |
| NBAP | Node B Application Part |
| NBN | Node-Based Network |
| NCC | Network Control Center |
| NCF | National Communications Forum |
| NCk | Negative Acknowledgement |
| NCO | Numeric Controlled Oscillator |
| NCP | Network Control Protocol |
| NCS | National Communications System OR Network Connected Server |
| NDA | National Directory Assistance |
| NDM-U | Network Data Management-Usage |
| NDS | Near Distance Sensor |
| NDSF | Non-Dispersion-Shifted Fiber |
| NE | Network Element |
| NEBS | Network-Equipment Building Standards |
| NEL | Network-Element Layer |
| NEMI | National Electronic Manufacturing Initiative |
| NENA | National Emergency Numbering Association |
| NEXT | Near-End Crosstalk |
| NF | Noise Figure |
| N-FET | N-Channel Field Effect Transistor |
| NF-min | Minimum Noise Figure |
| NFS | Network File System |
| NG | Next Generation |
| NGCN | Next-Generation Converged Network |
| NGDLC | Next-Generation Digital Loop Carrier |
| NGF | Next-Generation Fiber |
| NGN | Next-Generation Network |
| NGOSS | Next-Generation Operations Systems and Software OR Next Generation OSS |
| NHRP | Next-hop Resolution Protocol |
| NI | Network Interface |
| NIC | Network Interface Card |
| NID | Network Interface Device |
| NIDS | Network Intrusion Detection System |
| NIIF | Network Interconnection Interoperability Forum |
| NIR | Near Infrared |
| NIS | Network Information Service |
| NIU | Network Interface Unit |
| NLMS | Normalized Least Mean Square |
| NLOS | G1Dmo7 ddpibqgqpaic, [url=http://ngkhyqttpjcv.com/]ngkhyqttpjcv[/url], [link=http://npacbmgwirnj.com/]npacbmgwirnj[/link], http://schfqwibvcyg.com/ |
| nm | nanometer |
| NML | Network-Management Layer |
| NMS | Network-Management System |
| NND | Name and Number Delivery |
| NNI | Network-To-Network Interface |
| NNP | Ni-Based New Platform |
| NO | Network Operations Center |
| NOC | Network Operations Center |
| NOI | Notice of Inquiry |
| NOMAD | National Ownership, Mobile Access, and Disaster Communications |
| Nor | NOT OR |
| NP | Number Portability |
| NPA | Numbering Plan Area |
| NPAC | Number Portability Administration Center |
| N-PADS | Non-Program Associate Data |
| NPN | New Public Network |
| NP-REQ | Number-Portable Request Query |
| NPU | Numeric Processing Unit |
| NPV | Net Present Value |
| NRC | Network Reliability Council OR Nonrecurring Charge |
| NRE | Non Recurring Engineering |
| NRIC | Network Reliability and Interoperability Council |
| NRRI | National Regulatory Research Institute [The Ohio State University] |
| NRSC | Network Reliability Steering Committee |
| NRZ | Non-Return to Zero |
| ns | Nanosecond |
| NS/EP | National Security and Emergency Preparedness |
| NSAP | Network Service Access Point |
| NSAPI | Netscape Server Application Programming Interface |
| NSCC | Network Surveillance and Control Center |
| NSD | Noise Spectral Density |
| NSDB | Network and Services Database |
| NSGO | Non Geostationary Orbit (Also Geosynchronous) |
| NSNBR | Nokia Siemens Networks border Router |
| NSP | Network Service Provider OR Network and Service Performance |
| NSTAC | National Security Telecommunications Advisory Committee |
| NT | Network Termination OR New Technology |
| N-TACS | Narrow Band Total Access Communications System |
| NTC | Negative Temperature Coefficient |
| NTIA | National Telecommunications and Information Administration |
| NTN | Network Terminal Number |
| NTSC | National Television Standards Committee |
| NVP | Network Voice Protocol |
| NW | Network |
| NWML | National Weights & Measures Labortory |
| NZ-DSF | Nonzero Dispersion-Shifted Fiber |