56 KBPS
\fˈɪftisˈɪks kˌe͡ɪbˌiːpˌiːˈɛs], \fˈɪftisˈɪks kˌeɪbˌiːpˌiːˈɛs], \f_ˈɪ_f_t_i_s_ˈɪ_k_s k_ˌeɪ_b_ˌiː_p_ˌiː__ˈɛ_s]\
Sort: Oldest first
-
(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.
By Denis Howe
Word of the day
Procollagen Proline Dioxygenase
- mixed-function oxygenase that catalyzes hydroxylation prolyl-glycyl-containing-peptide, usually in protocollagen, hydroxyprolylglycyl-peptide. The enzyme utilizes molecular oxygen with a concomitant oxidative decarboxylation of 2-oxoglutarate to succinate. EC 1.14.11.2.