Network Address Port Translation

North American Region normally equated to the Caribbean, Canada, and the USA

Traffic consisting of plain or encrypted messages written in a natural language and transmitted in accordance with standard formats and procedures.
Note: Examples of narrative traffic include (a) messages that are placed on paper tape and transmitted via a teletypewriter (TTY), and on reception, are converted back to a printed page on another teletypewriter or teleprinter and (b) messages printed… (Read More →)

A modem whose modulated output signal has an essential frequency spectrum that is limited to that which can be wholly contained within, and faithfully transmitted through, a voice channel with a nominal 4-kHz bandwidth.
Note: High frequency (HF) modems are limited to operation over a voice channel with a nominal 3-kHz bandwidth.

In narrowband radio, the nominal 3-kHz bandwidth allocated for single channel radio that provides a transmission path for analog and quasi-analog signals.

Any analog signal or analog representation of a digital signal whose essential spectral content is limited to that which can be contained within a voice channel of nominal 4-kHz bandwidth.
Note: Narrowband radio uses a voice channel with a nominal 3-kHz bandwidth.

National Advanced Spectrum and Communications Test Network (NIST)

1. Network Address Translation,
2. Network Address Translator.

Network Address Translation - Protocol Translator

Abbreviation for North American Telecommunications Association.