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A Method for Carrying the Value of a 1988 X.400 Common Name Address Attribute in a 1984 Address

IP.com Disclosure Number: IPCOM000123395D
Original Publication Date: 1998-Oct-01
Included in the Prior Art Database: 2005-Apr-04
Document File: 1 page(s) / 38K

Publishing Venue

IBM

Related People

Parkes, D: AUTHOR

Abstract

This disclosure relates to a method in a data communications system of overcoming an incompatibility between the 1984 and 1988 X.400 protocol mail message specifications, by using a gateway program to reformat a message to comply with the appropriate specification for the recipient.

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A Method for Carrying the Value of a 1988 X.400 Common Name Address
Attribute in a 1984 Address

   This disclosure relates to a method in a data
communications system of overcoming an incompatibility between the
1984 and 1988 X.400 protocol mail message specifications, by using a
gateway program to reformat a message to comply with the appropriate
specification for the recipient.

   The ITU X.400 1988 recommendations ("The Blue Book")
introduced the common name attribute into the standard attribute
list of an X.400 address.  If the common name is used to make an
X.400 address unique, this renders the address non-replyable from a
system that only supports the ITU X.400 1984 recommendations ("The
Red Book").

   The proposed solution is to store the value of the Common
Name attribute from the 1988 address in the first free Domain
Defined Attribute.  In an implementation of this solution, the
Domain Defined Attribute would be given a Domain Defined Attribute
Type of "IMXC MN" or some other value unlikely to conflict with
existing Type values, and the value of the Common Name itself would
be stored in the Domain Defined Attribute Value with an unambiguous
prefix of "X400 COMMON NAME="  or the like.

   In an implementation of this solution, after the step of
storing and transmitting the Common Name in this way, the system
would extract the Common Name value from the Domain Defined
Attribute, clear the Domain Defined Attribute, and store the
extracted value in the Common...