ABBREVIATIONS - N
| NA | Network Aspects | | NAB | National Association of Broadcasters | | NAK | Negative AcKnowledgement | | NASA | National Aeronautics and Space Administration | | NAT | Network Access Terminal | | NB | Narrowband | | NCC | Network Control Centre | | NCF | Network Control Facility | | NCS | Network Coordination Station | | NCTA | National Cable Television Association | | NF | Noise Figure | | NGSO | Non Geostationary Orbit | | NIC | Near Instantaneous Companding | | NiCd | Nickel Cadmium | | NiH | Nickel Hydrogen | | NIM | Network Interface Module | | NMS | Network Management System | | NOC | Network Operations Centre | | NPR | Noise/Power Ratio | | NRTC | National Rural Telecommunications Cooperative | | NRZ | Non Return to Zero | | ns | Nanosecond | | NSC | National Switching Centre | | NTSC | National Television Standards Committee (TV standard) | | NVOD | Near Video On Demand |
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