Path: utzoo!censor!geac!torsqnt!news-server.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucsd!pacbell.com!pacbell!hoptoad!hsfmsh!daemon From: tnixon@hsfmsh.UUCP (Toby Nixon) Newsgroups: comp.dcom.modems Subject: Re: V.32bis ... what is it? Message-ID: <3429@hsfmsh.UUCP> Date: 5 Jul 90 15:16:23 GMT Sender: daemon@hsfmsh.UUCP Organization: Hayes Microcomputer Products, Inc. Norcross, Georgia Lines: 23 In article , Tim Steele asks: - Are the modes half duplex (like Telebit's PEP) or full duplex? In V.32bis, all of the modems are symmetrical, full-duplex; you transmit in both directions simultaneously (using echo cancellation) at 14400, 12000, 9600, 7200, or 4800. There was a proposal to allow asymmetrical data rates but symmetrical baud rates (i.e. 2400 symbols per second in both directions but varying the number of bits per symbol, so you could have, say, 9600 in one direction but 14400 in the other), but this was not accepted by the CCITT. So, with V.32bis, you always have the same speed in both directions. -- Toby ----------------------------------------------------------------------------- Toby Nixon, Principal Engineer Fax: +1-404-441-1213 Telex: 6502670805 Hayes Microcomputer Products Inc. Voice: +1-404-449-8791 CIS: 70271,404 Norcross, Georgia, USA BBS: +1-404-446-6336 MCI: TNIXON Telemail: T.NIXON/HAYES AT&T: !tnixon UUCP: ...!uunet!hayes!tnixon Internet: hayes!tnixon@uunet.uu.net MHS: C=US / AD=ATTMAIL / PN=TOBY_L_NIXON / DD=TNIXON -----------------------------------------------------------------------------