Path: utzoo!utgpu!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!mailrus!ames!pasteur!ucbvax!ANDREW.CMU.EDU!ddp+
From: ddp+@ANDREW.CMU.EDU (Drew Daniel Perkins)
Newsgroups: comp.protocols.tcp-ip
Subject: v.25 bis
Message-ID: 
Date: 1 Dec 88 00:56:14 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 12

I was reading looking at the CCITT Red Book "Recommendations of the V Series"
(Volume VIII - Fascicle VIII.1) today and noticed an interesting protocol
"Recommendation V.25 bis, Automatic Calling and/or Answering Equipment on the
GSTN Using the 100-Series Interchange Circuits".  This recommendation basically
specifies an equivalent of the Hayes "AT" command set for modems.  The thing I
found most interesting was that it specified it for synchronous links (both bit
and character oriented) in addition to async links.  Does anyone know of
anything that supports this protocol?  Is there a good reason why it isn't
common?  I'm thinking that it might be very usefull for dialing sync modems,
dialing ISDN Terminal Adaptors, connecting sync port selectors, etc.

Drew