V.90
V.pcm
<protocol> An {ITU-T} {standard} {modem} serial line
{protocol} allowing download speeds of up to 56 {kbps} with
upload speeds of 33.6 {kbps}. {V.90} modems are designed for
connections that are digital at one end and have only one
digital-to-analogue conversion.
As of 1998-02-06 the V.90 standard, formerly called V.pcm, has
been given final approval by {ITU-T}. On 1998-10-27 the ITU-T
announced that approval of the V.90 standard was completed.
Interoperability testing is complete or in progress for
several modem manufacturers. The V.90 standard reconciles two
competing standards, {X2} and {K56flex}.
The {ITU-T} has initiated the approval process for a new
all-digital version of the protocol, to be known as {V.91}.
ITU Press Release 98-04
(http://itu.int/newsroom/press/releases/1998/98-04.html).
and NP-3
(http://itu.int/newsroom/press/releases/1998/NP-3.html).
(1999-01-25)