narrowband

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narrowband

(networking)
A communication channel with a low data rate.

The term is sometimes used for an Internet connection via a dial-up modem, typically at 56 kbaud, in contrast to broadband.

narrowband

In communications, transmission rates up to T1 speeds (1.544 Mbps). The upper limit is moving target. At one time, narrowband meant 150 bps (that is 150 bits per second!). Then, the upper limit became 2,400 bps. Later, it moved to 64 Kbps. Contrast with wideband and broadband.
References in periodicals archive ?
Narrow-band UVB now is considered the standard in phototherapy for treatment of vitiligo, said Dr.
Having endured the last three months of the all-weather season, during which the narrow-band handicaps made it impossible to place a 57-rated horse of ours, I wanted to scream and knock some BHB heads together when I saw the entries for the Bank Holiday `showpiece' at Kempton.
The Handy-Color unit can measure metamerism by means of its multiple built-in lighting sources (daylight C, D65, tungsten A, cool-white fluorescent F2, and narrow-band white fluorescent F11).
In December, 1989, Motorola introduced NAMPS as a narrow-band system that could provide increased capacity and enhanced services.
Of course, individual members of the RPC have individual concerns about various aspects of narrow-band handicaps, but the committee as a whole has thoroughly endorsed the principle behind them - meritocracy - and their introduction.
7 /PRNewswire/ -- U S WEST NewVector Group announced today it endorsed narrow-band cellular technology and urged its acceptance as a technological standard by the Telecommunications Industry Association (TIA).
The newly formed narrow-band handicaps are designed to encourage meritocracy, but have been condemned by many prominent trainers who feel the weight range is too narrow and so limits opportunities.
In 1998, in an effort to address narrow-band PMD measurement needs, NIST demonstrated a Modulation-Phase Shift (MPS) technique able to measure PMD in a narrow 4 GHz bandwidth.
Prior to the introduction of SIP Trunking, business customers deploying IP PBX technology have been required to purchase, install and manage PSTN media gateways to convert IP voice to narrow-band circuit connections.
The transfer standard is an erbium-doped fiber amplifier that is coupled to a linear polarizer and a narrow-band optical filter centered in the 1550 nm wavelength range.
The modem's small footprint, separate telemetry and mobile media access layers, and flexible and narrow-band capabilities are compelling features for OEM and system integrators in the mobile data market.
The transfer standard is an erbium-doped fiber amplifier to which is coupled a linear polarizer and a narrow-band optical filter ([less than]5 nm) centered in the 1550 nm wavelength range.