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- Newsgroups: comp.protocols.iso
- Path: sparky!uunet!munnari.oz.au!metro!socs.uts.edu.au!deakin!colville
- From: colville@socs.uts.edu.au (John Colville)
- Subject: Re: Alternative Encoding Rules
- Message-ID: <colville.714726730@deakin>
- Sender: news@socs.uts.edu.au
- Organization: Computing Sciences, Uni of Technology, Sydney.
- References: <1992Aug18.193915.22005@linus.mitre.org>
- Date: 25 Aug 92 07:12:10 GMT
- Lines: 28
-
- jccw@poobah.mitre.org (John C. C. White) writes:
-
- >I seem to recall that there was some work going on regarding
- >alternatives to the Basic Encoding Rules (BER), to provide a
- >more compact (or at least different) transfer syntax. Can anyone
- >point me to some documents or people that can bring me up to
- >speed on this? Or tell me that I'm dreaming, and BER is all
- >anyone will ever need?
-
- >John White
- >MITRE Bedford, Mass
- >jccw@mitre.org
-
- The JTC are working on a number of other Rules, which are all
- derived from BER to improve the performance of the transfer syntax.
- They are described in the Addenda/Amendments to IS8825/CCITT X.209.
-
- The new sets are:
-
- DER (Distinguished ER) which basically imposes transfer orderings on some
- classes of fields
-
- PER (Packed ER) which 'squeezes' down the BER patterns
-
- LWER (light Weight ER) which is designed for faster processing, by requiring,
- for example, that all strings start on word boundaries.
-
-
-