| Abbreviation | Definition |
|---|---|
| NANPA | North American Numbering Plan Administration |
| NAPRD | North American Program Reference Document |
| NAPT | Native American Public Telecommunications |
| NBAP | Node B Application Part |
| NB-LTE | Narrow-Band Long-Term Evolution |
| NBTC | National Broadcasting and Telecommunication Commission |
| NC | Network Channel |
| NC | Next Call |
| NC | No Connection |
| NCD | National Coverage Determination |
| NCI | Network Channel Interface |
| NCMN | North County Mobile Notary |
| NCP | Network Control Point |
| NCRS | Natural Resources Conservation Service |
| NCS | Not Connected Seconds |
| NCT | Network Connection Technology |
| NCTE | Network Channel Terminating Equipment |
| NCTUE | National Consumer Telecom Utilities Exchange |
| NCTUE | National Consumer Telecommunications and Utilities Exchange |
| NCU | Network Connection Utilities |