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- A modem whose modulated output signal can have an essential frequency spectrum that is broader than that which can be wholly contained within, and faithfully transmitted through, a voice channel with a nominal 4-kHz bandwidth. 2. A modem whose bandwidth capability is greater than that of a narrowband modem.
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- CDMA (Code-division multiple access access), code-division multiple access (CDMA), narrowband modem, narrowband radio voice frequency (NBRVF), narrowband signal, quasi-analog signal, rf bandwidth, wideband