56 kbps

(communications)(56 kilobits per second) The data capacity ofa normal single channel digital telephone channel in NorthAmerica. The figure is derived from the bandwidth of 4 kHzallocated for such a channel and the 16-bit encoding (4000times 16 = 64000) used to change analogue signals todigital, minus the 8000 bit/s used for signalling andsupervision.

At the end of 1997 there were two rival modem designscapable of this rate: k56flex and US Robotics' X2. InFebruary 1998 the ITU proposed a 56kbps standard calledV.90, which is expected to be formally approved duringSeptember 1998.

单词	56 kbps
释义	56 kbps 56 kbps (communications)(56 kilobits per second) The data capacity ofa normal single channel digital telephone channel in NorthAmerica. The figure is derived from the bandwidth of 4 kHzallocated for such a channel and the 16-bit encoding (4000times 16 = 64000) used to change analogue signals todigital, minus the 8000 bit/s used for signalling andsupervision. At the end of 1997 there were two rival modem designscapable of this rate: k56flex and US Robotics' X2. InFebruary 1998 the ITU proposed a 56kbps standard calledV.90, which is expected to be formally approved duringSeptember 1998.
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