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- A digital signal that has been converted to a form suitable for transmission over a specified analog channel. Note: The specification of the analog channel should include frequency range, bandwidth, signal-to-noise ratio, and envelope delay distortion. When quasi-analog form of signaling is used to convey message traffic over dial-up telephone systems, it is often referred to as voice-data. A modem may be used for the conversion process.
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- CDMA (Code-division multiple access access), code-division multiple access (CDMA), narrowband modem, narrowband radio voice frequency (NBRVF), narrowband signal, rf bandwidth, wideband, wideband modem