Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!bcm!dimacs.rutgers.edu!seismo!uunet!spool.mu.edu!sdd.hp.com!wuarchive!mit-eddie!bloom-beacon!eru!hagbard!sunic!ugle.unit.no!nuug!ifi!enag From: enag@ifi.uio.no (Erik Naggum) Newsgroups: comp.protocols.iso Subject: Re: OSI on asynch PC lines revisited Message-ID: Date: 4 Feb 91 18:52:36 GMT References: Sender: enag@ifi.uio.no (Erik Naggum) Distribution: comp Organization: Naggum Software, Oslo, Norway Lines: 25 In-Reply-To: mskuhn@faui09.informatik.uni-erlangen.de's message of 4 Feb 91 11:48:57 GMT In article mskuhn@faui09.informatik.uni-erlangen.de (Markus Kuhn) writes: > Some days ago, I asked here about possibitilies for > OSI connections on asynchronous/start-stop RS-232 lines. > There seems to be some interest in this topic. I got > some suggestions: > 1. H.T.Alvestrand suggested me to check X.32 in the CCITT > Blue Book. I did this. Unfortunately this recommendation > says only something about synchronous modes on the > V.24 (= RS-232) interface. The other modes are "for further > study" (section 4.3.1). Perhaps they intend to use the > new HDLC start-stop mode as a further option in the '92 version. The start-stop mode lower layer of X.25 was issued as an "expedited procedure" recommendation or somesuch. I believe it's X.32 bis. CCITT has opted for a speedy procedure for most of the interesting things. [FX].435, for instance. You don't have to wait until 1992 for all the neat things they decide to recommend. -- [Erik Naggum] Naggum Software, Oslo, Norway