Path: utzoo!attcan!uunet!unisoft!hoptoad!hsfmsh!daemon
From: tnixon@hsfmsh.UUCP (Toby Nixon)
Newsgroups: comp.dcom.modems
Subject: Re: V.32bis?
Message-ID: <2828@hsfmsh.UUCP>
Date: 12 Apr 90 19:09:59 GMT
Sender: daemon@hsfmsh.UUCP
Organization: Hayes Microcomputer Products, Inc.  Norcross, Georgia
Lines: 35

a186@mindlink.UUCP (Harvey Taylor) writes:

-     Does anybody have the scoop on V.32bis? I came across the
- following  excerpt on FidoNet.     Toby can you verify this? 

The CCITT Special Rapporteur's Group on V.32 extensions met in 
Atlanta, 26-28 February 1990. At that meeting, we agreed that the 
extended V.32 standard would be known as "V.32 bis"; that it would 
include speeds of 4800, 7200, 9600, 12000, and 14400; that it would 
be backward compatible with existing V.32 modems; that the 
modulation techniques at 12000 and 14400 would be the same as used 
in V.33; and a few other points.  The remaining points of 
disagreement are on issues such as (a) does V.32bis always operate 
in the same speed in both directions, or is operation at different 
speeds desirable; (b) should the modems be able to signal 
time-division multiplexer configuration information, for use in 
dial-backup of V.33 modems; and (c) should the modems have a new 
mechanism for quickly shifting speeds up and down when line 
conditions change (the existing V.32 mechanism involves a complete 
retrain, about 2-3 seconds minimum).

There is a very good chance that these issues will be resolved at 
the meeting of Study Group XVII in Geneva, 19-27 April.  I'll be 
there, and will let you know the results.

	-- Toby

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Toby Nixon, Principal Engineer     Fax:    +1-404-441-1213  Telex: 6502670805
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