| V.92 Questions & Answers |
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| List of V.92
Service Providers |
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http://www.modems.com/isplist.html |
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| V92.isp.com |
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http://www.v92isps.com |
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| V92.com |
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http://www.v92.com/v92isp |
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| What is V.92? |
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V.92 is a new standard
for dial-up communications that offers several important improvements
over the existing V.90 standard. These improvements are intended
to make communications faster, easier and more enjoyable. V.92
and its companion compression standard V.44, have been officially
adopted by the ITU, the International Telecommunications Union. |
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| What makes a
Zoom V.92 modem faster than V.90? |
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There are three
features that allow the Zoom V.92 modem to give you faster
speeds. The first is the V.92's improved "automatic
negotiation" or "handshake" which is the way modems determine
compatibility and decide what standards to use to communicate.
With a typical V.90 modem this can take as long as 30 seconds.
With QuickConnect , the entire process can take as little
as half that time. The Zoom V.92 Modem also includes
V.44, a new international data compression standard. V.44
was designed specifically for the Internet, and can double
the effective speed of your Internet page loading. Finally,
the V.92 standard increases the upload speed by as much as
30%., from 33,600 bps (the maximum upload speed using V.90)
to 48,000 bps. |
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| How does V.44
increase the speed of my web browsing? |
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V.44 is the latest
compression standard approved by the ITU. Compression increases
the effective speed of your connection by analyzing the data
and encoding it so that it can be sent more efficiently. The
old standard (V.42bis) was created about 10 years ago, so it
wasn't designed with the Internet in mind. V.44 was, and it
is therefore much more efficient at compressing WEB pages -
up to 100% more efficient in some cases. |
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| How can I use
one phone line for both voice and data? |
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The V.92 standard
lets your ISP or online service put your data connection "on
hold" while you pick up a voice call using your "call waiting"
service. When you finish with the voice call you can instantly
resume the connection as though you had never left. |
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| Do I need a
special service or new ISP? |
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No. But you may
not be able to take advantage of all these features right away.
While your current ISP will almost certainly support V.92 and
V.44 at some point, it may take a while before the equipment
manufacturers that your ISP or online service uses sends them
an upgrade, or until they implement the upgrade. However, V.92
and V.44 are true international standards, so over time you
can be assured of nearly universal support. In the meantime
you can use the V.90 protocol, which is also in your Zoom V.92
modem, until your ISP switches over. |
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| Does V.92 "QuickConnect"
work on all calls? |
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This feature of
the V.92 standard allows the modem to "learn" and "remember"
the variables associated with calling a specific telephone number
and connecting to a specific modem associated with that number.
This feature will be most effective when you repetitively call
the same number - such as that for your on-line service or internet
service provider. The modem will then be able to use its stored
profile and deliver the advantage of a quicker connection. |
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| Does V.44 work
equally well on all file transfers? Which are most improved;
least improved? |
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V.44 compression
is optimized for the types of files associated with internet
use including WEB pages, graphics and documents such as .pdf
files. As with all compression the amount of improved performance
varies both with the actual format and with the content of
individual pages. For reference, WEB searches show
the most visible improvement, especially searches on WEB stores
or areas that have high amounts of text and numerous small
images. The most improvement is in standard WEB browsing.
Email and downloading of ASCII type text files show noticeable
but more modest improvement |
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| Will a V.92
modem work automatically with earlier modems? V.90, K56flex,
X2? With 33.6k, 14.4k, 9600 and 2400 modems? |
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A Zoom V.92 modem
will automatically negotiate and connect at the best achievable
shared speed down to 2,400 bps. The negotiation and the related
connection time may take longer if the connection does need
to be negotiated down to a very low speed as the higher speeds
are attempted first. However the connection between a 56K V.92
and a 56K V.90 will take approximately the same time as between
two current V.90 modems. |
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| Does "Internet
On Hold" work without Call Waiting? Without CallerID? |
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Internet On Hold
does require that the user have Call Waiting service from their
local telephone company. V.92 provides enhanced support for
Call Waiting service so that the user is notified of an incoming
voice call and has the option of picking up the call and leaving
the Internet on hold for an extended period of time. The maximum
on hold time will be determined by your Internet Service Provider
or On Line Service. |
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| Will I be able
to upgrade my V.90 modem? Which models and for what cost? |
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Zoom will only
be shipping V.92 in new models of it's products which have been
specially engineered to provide optimum performance with both
the new V.92 and V.44 protocol. This will ensure that our customers
get the performance they are expecting with the new technology. |
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| How do V.92
modem speeds compare to ISDN, ADSL and Cable speeds? |
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First, remember
that V.92 is asymmetric in nature, the same as ADSL. It offers
download speeds from the WEB which are higher than it's upload
speeds. This means that it is inherently different from ISDN
and has been optimized, like ADSL, for Internet access. In
fact it is optimized primarily with V.44 compression rather
than with purely higher transmission speed as found in ADSL
and Cable. Because of this it is not possibly to directly
compare the different devices except in terms of the Internet
experience itself, including Web browsing. Given optimum V.92/V.44
performance of approximately 300,000 bps, this still means
that that it will operate at less than half the speed of most
broadband services (which range from 600,00 bps to 1,500,000
bps). Zoom also makes and markets ADSL and Cable modems
to support broadband service; we feel that the V.92/V.44 modems
will significantly improve the Internet for many users that
do not have access to or wish to pay for broadband service
but we do not represent them as competition for broadband.
They will, however deliver equivalent or better Internet access
than most ISDN devices as long as the application does not
require equal speeds in both directions. |
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