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- What is V.92?
- V.92 is a new standard in 56K modem technology that was determined by the
International Telecommunications Union in June, 2000. This standard is an enhancement
of the existing V.90 standard.
- What options does V.92 allow that V.90 does not?
- In addition to an overall refinement of V.90 technology, V.92 enables three major new functions:
Modem on Hold, Quick Connect, and V.PCM upstream. To receive the full benefit of
each of these features, both the user’s modem and the ISP’s server equipment need V.92 upgrades.
- Modem on Hold” allows a modem user to suspend a data call, answer an inbound
voice call, then re-establish the data call without ever losing the connection.
This permits less intrusive use of a modem in the home and fuller utilization of a single
phone line. (Note: This feature requires Call Waiting service from your local phone company.)
- Quick Connect” enables the modem to shorten the initial connect time on a call.
The modem can compare the new call to the previous call, and if the line
conditions are similar (as will often be the case when calling the same POP on the same
phone line), it can bypass portions of the training sequence.
- V.PCM Upstream” facilitates faster upstream communication with upload speeds reaching
48,000 bits per second (V.90 upstream speeds were limited to 31,200 bps.) The modem user
can choose to favor fast ownstream communication, or to favor a more “balanced communication
flow which will increase upstream data rates while slightly reducing downstream rates.
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