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56k standard ABCs
V.90 standard history
Technical Support
56 STANDARD ABCs
The 56k technology was a new technology
that was released as a faster solution for end users and SOHO. When originally introduced,
two technologies emerged: X2, which was developed by UsRobotics; and KFlex, which was
introduced by Lucent and Rockwell. However,
unfortunately because
there was two different types of technologies there was no one
standard which caused a lot of problems for end-users and Internet Service
Providers. For example, if an end-user had an X2 modem but the Internet Service
Provider only had KFlex modems, the end-user would be unable to achieve the optimal
performance.
Because of this dilemma, a standard was
developed which was titled V.90. This standard took both X2 and KFlex and merged them into
one standard; this allowed end-users to achieve maximum performance if they were with an
Internet provider whom was providing a different technology.
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V.90
STANDARD HISTORY September 1996 - UsRobotics
(3COM) submitted the first V.90 56k proposal to ITU.
November 1996 - Lucent and Rockwell announce
their intention on making the KFlex Standard.
April 1997 - ITU called for special
working party to determine a 56k standard.
September 1997 - ITU met, but did not reach consensus on several
technical aspects.
December 1997 - Working Party agreed to compromise on spectral shaping
and multiple modulus conversion. 25 of 30 favorable votes were cast.
February 1997 - Standard determination.
September 1998 - Standard ratification expected.
February 6, 1998 - V.90 becomes a standard after ITU comes to final
agreement. |
