noswal
Executive Member
Which do you have? 
http://computing-dictionary.thefreedictionary.com/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.
Wideband
In communications, transmission rates from 64 Kbps to 2 Mbps. Contrast with narrowband and broadband.
Broadband
(1) High-speed transmission. The term is commonly used to refer to Internet access via cable modems or DSL, which is faster than dial-up. For years, "broadband" has referred to a higher-speed connection, but the actual speed threshold has varied. While T1 (1.5 Mbps) has been widely used as the threshold, others have used T3 (45 Mbps) for broadband. For example, after the turn of the century, South Korea leapfrogged the U.S. in Internet access, offering DSL up to 50 Mbps and calling their 1.5 Mbps service "light." In every case, however, it implies transmitting at higher speeds. See broadband router, T1, cable modem and DSL.
http://computing-dictionary.thefreedictionary.com/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.
Wideband
In communications, transmission rates from 64 Kbps to 2 Mbps. Contrast with narrowband and broadband.
Broadband
(1) High-speed transmission. The term is commonly used to refer to Internet access via cable modems or DSL, which is faster than dial-up. For years, "broadband" has referred to a higher-speed connection, but the actual speed threshold has varied. While T1 (1.5 Mbps) has been widely used as the threshold, others have used T3 (45 Mbps) for broadband. For example, after the turn of the century, South Korea leapfrogged the U.S. in Internet access, offering DSL up to 50 Mbps and calling their 1.5 Mbps service "light." In every case, however, it implies transmitting at higher speeds. See broadband router, T1, cable modem and DSL.