BPS - Bits Per Second. A measurement of the speed that data is transmitted and received by a modem. The larger the number, the faster the data is sent and received. Typical rates are 2400, 14,400, 28,800 and 33,600 BPS. The newest standard dial-up rate is 57,600 BPS. Rates in the higher range are often abbreviated with KB, as in 33.6 KB. Often confused with BAUD, although the terms are not interchangeable in the strictest sense; they are fairly close in accuracy for purposes of general conversation.