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| What
are V.92 ? |
Presented
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Copyright 2000© |
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V.92 Modem Standard
The International Telecommunication Union
(ITU-T) has announced an improved ITU-T 56K modem standard: V.92. Though
the top speed for downloads is still 56K, V.92 has a number of
enhancements:
- Startup time - the time needed to
establish a connection - has been reduced, making hopping on and off
the Internet much easier. This should make it easier to hop on and
off the Internet. Reports from months ago claimed that startup time
had been reduced from around twenty seconds to about five seconds,
though more recent reports put the figure at ten seconds. (One
difference in the figures may be whether or not dialing time is
included, or if the figures only cover the time when the two modems
are screeching at each other during the connection phase.)
- V.92 has a standard method of
disconnecting the modem long enough to let you know that someone is
trying to call you without losing the connection, a feature being
referred to as "Internet call waiting."
- The maximum upload speed has been
increased from 33.6K to 48K, which should improve video conferencing
and general uploading.
The ITU-T also proposed two new related
modem standards:
- The ITU-T has upgraded the V.42bis
compression to V.44, which it says compresses data 25% more
effectively.
- V.59 is a new protocol for
facilitating modem and connection fault-finding.
Final approval of the new standards could
come as early as the group's November, 2000 meeting.
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