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- Path: sparky!uunet!hayes!tnixon
- From: tnixon@hayes.com
- Newsgroups: comp.dcom.modems
- Subject: Re: What is V.fast?
- Message-ID: <5914.2a9cada8@hayes.com>
- Date: 27 Aug 92 10:25:44 EDT
- References: <1966@ltb.ltb.bso.nl>
- Organization: Hayes Microcomputer Products, Norcross, GA
- Lines: 34
-
- In article <1966@ltb.ltb.bso.nl>, wierda@ltb.ltb.bso.nl (Gerben
- Wierda) writes:
-
- > I have heard about something called V.fast (like V32bis etc). It would sustain
- > raw throughput of 24kbps. There are even modems that have this "standard".
-
- "V.fast" is the "working title" for the project in CCITT Study Group
- XVII for the next (and probably last) generation of analog modems.
- While a lot of proposals have been put on the table, few decisions
- have been made on how the modem will work -- but one item of
- consensus is that it will run at least 24,000 bps on most domestic
- phone channels, with 28,800 on many (short local loops with all
- digital connections between central offices).
-
- The standard is still far from adoption, so no existing modems "have
- this 'standard'"; however, some manufacturers have offered
- proprietary non-standard high-speed modems above 14,400 bps, with a
- promise to upgrade to "real V.fast" when the standard is done (which
- is a tough promise to make, given the current uncertainty about what
- will be in the final standard).
-
- I suspect that, at the current pace of work, Study Group XVII won't
- reach technical consensus on the standard until fall of 1993, with
- adoption of the standard in early 1994 -- but that is very much
- subject to change.
-
- (P.S. I am one of Hayes' representatives on the V.fast group).
-
- --
- Toby Nixon, Principal Engineer | Voice +1-404-840-9200 Telex 401243420
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