gkrishn@saurez.eng.clemson.edu (Krishnan Gopalan) (09/28/89)
I have seen a lot of discussion about X.25 in this group. Could somebody point me to any relevant literature(papers,RFC's tech docs etc) on the X.25 Thanx in advance Krishnan Gopalan Engineering Computer Operations, Clemson University. ------------------------------------------------------------------------------
bob@MorningStar.COM (Bob Sutterfield) (09/28/89)
In article <6620@hubcap.clemson.edu> gkrishn@saurez.eng.clemson.edu (Krishnan Gopalan) writes:
Could somebody point me to any relevant literature(papers,RFC's
tech docs etc) on the X.25
X.* standards aren't the purvey of RFCs - X.* are recommended
standards from the CCITT, not documents describing conventions of
popular usage by people working in the field. The only RFCs with
titles containing "X.25" are 874, 1086, and 1090. 874 is the only one
that addresses it directly. Sort of.
We get our CCITT books from Omnicom at 703-281-1135.jimm@haddock.ima.isc.com (Jim McGrath) (09/29/89)
In article <1989Sep28.152421.8509@MorningStar.COM> bob@MorningStar.COM (Bob Sutterfield) writes: >In article <6620@hubcap.clemson.edu> gkrishn@saurez.eng.clemson.edu (Krishnan Gopalan) writes: > Could somebody point me to any relevant literature(papers,RFC's > tech docs etc) on the X.25 > >X.* standards aren't the purvey of RFCs - X.* are recommended >standards from the CCITT, not documents describing conventions of >popular usage by people working in the field. The only RFCs with >titles containing "X.25" are 874, 1086, and 1090. 874 is the only one >that addresses it directly. Sort of. > >We get our CCITT books from Omnicom at 703-281-1135. Start with ISO 8208. It corresponds to the 1984 version of the CCITT X.25 Recommendation for Layer 3, but is much more readable. The ISO standards are copyrighted, but perhaps your university library will have a copy. Next try the CCITT X.25 Recommendation. It is issued every four years, with 1988 being the most recent release. Most implementations in current use correspond to the 1980 or 1984 version. The Recommendation was first issued in 1976, and most complaints I have seen here seem to relate to limitations in that version. Volume One of the DDN Protocol Handbook contains information for hosts with X.25 connections to the Defense Data Network. RFC 1009 (Requirements for Internet Gateways) has some information that may be of interest. Jim McGrath
gregk@ubvax.UB.Com (Greg Kendall) (09/29/89)
In article <6620@hubcap.clemson.edu> gkrishn@saurez.eng.clemson.edu (Krishnan Gopalan) writes: >I have seen a lot of discussion about X.25 in this group. Could somebody >point me to any relevant literature(papers,RFC's tech docs etc) on the >X.25 X.25 The PSN Connection, from HP (part number 5958-3402). Good introductory material, well presented, in depth enough to be used as a reference.
howard@cos.com (Howard C. Berkowitz) (09/30/89)
In article <6620@hubcap.clemson.edu>, gkrishn@saurez.eng.clemson.edu (Krishnan Gopalan) writes: > I have seen a lot of discussion about X.25 in this group. Could somebody > point me to any relevant literature(papers,RFC's tech docs etc) on the > X.25 One good text, although slightly dated, is _X.25 Explained: Protocols for Packet Switching Networks_ by R.J. Deasington (Ellis Harwood Ltd., a division of John Wiley & Sons). There are quite a number of standards associated with "X.25," in the CCITT and ISO world. X.25 itself references some physical layers (e.g., X.21 and X.21 _bis_), and covers the frame and packet levels. There are ISO standards paralleling these: ISO 7776 for the frame layer and ISO 8208 for packet. ISO 8878 deals with providing the OSI Connection-Oriented Network Service over X.25. CCITT also has a number of related standards, such as X.121 for the addressing plan and X.87 hypothetical reference connections. The X.135-X.139 series deal with performance. These are from memory; there are a number more including the X.25 interface to ISDN. -- howard@cos.com OR {uunet, decuac, sun!sundc, hadron, hqda-ai}!cos!howard (703) 883-2812 [W] (703) 998-5017 [H] DISCLAIMER: Opinions expressed are not necessarily those of the Corporation for Open Systems, its members, or any standards body.
wasc@cgch.UUCP (Armin Schweizer) (10/02/89)
for the tough reader I recommend the CCITT recommendations:
fascicle VIII.2 for X.3 (PAD setup paramaters)
fascicle VIII.3 for X.25 (sync DTE interface for packet switching networks)
X.28 (async DTE interface for PADs)
X.29 (sync host to PAD control)
fascicle VIII.4 for X.75 (sync interface between packet switching networks)
X.121 (international numbering plan for public data nets)
you can get these standards from:
UIT / CCITT
place des nations
1200 Geneva / Switzerland
phone: -41-22-730'51'11
fax: -41-22-733'72'56
there is a new edition, the "blue books" coming just this very moment.
kind regards
armin
Armin R. Schweizer, CIBA-GEIGY AG, R1045.P.06, WRZ
4002 Basel / Switzerland
phone: -41-61-697'79'46