(Note: The original of this document can be found here. -thb)
Contents:Minimum Kernel defines the basic services to be provided by any MHS system:
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Access management (*)
Content type indication
Conversion prohibition
Conversion prohibition in case of loss of information (*)
Converted indication
Deferred delivery
Deferred delivery cancellation
Delivery notification
Delivery time stamp indication
Disclosure of other recipients (*)
DL expansion prohibited (*)
Grade of delivery selection
Message identification
Multi-destination delivery
Non-delivery notification
Original encoded information types indication (*)
Prevention of non-delivery notification
Probe
Redirection disallowed by originator (*)
Submission time stamp indication
User/UA capabilities registration
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The following services has to be provided only to the originator:
Alternate recipient allowed (*)
Explicit conversion (*)
Use of distribution list (also DL expansion history)
B. Extended Kernel
External Kernel offers the following additional Elements of Service over the Minimum Kernel:
Latest delivery designation (*)
Originator requested alternate recipient (*)
Return of content (*)
C. Other Functional Groups
Additional features of the X.400 1988 are divided into the Functional Groups that discuss different areas of MHS:
Elements of service belonging to a basic service are inherently part of that service - they constitute the basic service and are always provided and available for user of that service.
Other elements of service, called optional user facilities, can be selected by the subscriber or user, either on a per-message basis, or for an agreed contractual period of time. Each optional user facility is classified as either essential or additional. Essential optional user facilities are to be made available to all MH users. Additional optional user facilities can be made available for national use, and for international use on the basis of bilateral agreement.
1. Elements of service belonging to the basic MT service
9 elements of service
NIST
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Access Management M M
Content type indication M M
Converted indication M M
Delivery time stamp indication - M
Message indication M M
Non-delivery notification M M
Original encoded information types
indication M M
Submission time stamp indication M M
User/UA capabilities registration - M
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2. MT service optional user facilities
40 elements of service, 10 essential in X.400
PM per-message
CA contractual agreement
M mandatory, in UK GOSIP 4.0 (p.22-23), and in NIST (p.8)
- optional
UK NIST
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Alternate recipient allowed E PM
Alternate recipient assignment A CA M
Content confidentiality A PM
Content integrity A PM
Conversion prohibition E PM
Conversion prohibition in case of loss of
information A PM M
Deferred delivery E PM
Deferred delivery cancellation E PM
Delivery notification E PM
Designation of recipient by directory name A PM
Disclosure of other recipients E PM
DL expansion history indication E PM
DL expansion prohibited A PM M M -
Explicit conversion A PM M
Grade of delivery selection E PM
Hold for delivery A CA M - M
Implicit conversion A CA
Latest delivery designation A PM M
Message flow confidentiality A PM
Message origin authentication A PM
Message security labelling A PM
Message sequence integrity A PM
Multi-destination delivery A PM M M M
Non-repudiation of delivery A PM
Non-repudiation of origin A PM
Non-repudiation of submission A PM
Originator requested alternate recipient A PM M
Prevention of non-delivery notification A PM M M -
Probe E PM
Probe origin authentication A PM
Proof of delivery A PM
Proof of submission A PM
Redirection disallowed by originator A PM M M M
Redirection of incoming messages A CA M
Report origin authentication A PM
Requested delivery method E PM
Restricted delivery A CA
Return of content A PM M
Secure access management A CA
Use of distribution list A PM M
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3. Elements of service belonging to the basic IPM service
11 elements of service
NIST UK
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Access Management M M
Content type indication M M
Converted indication - M
Delivery time stamp indication - M
IP-message identification M M
Message identification - M M M
Non-delivery notification M -
Original encoded information
types indication M M
Submission time stamp indication M M
Typed body M M
User/UA capabilities registration - M
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4. IPM optional user facilities selectable on a
per-message basis
74 elements of service, 10 essential in origination, 22 essential in reception (PDAU and MS excluded) in X.400.
Plus 22 mandatory elements of service in origination, 7 mandatory in reception in UK GOSIP (p.41-42).
E Essential optional user facility that has to be provided
E* Essential optional user facility only applying to PDAUs
E** Essential optional user facility only applying to MSs
A Additional optional user facility that can be provided
- Not applicable
X.400 UK
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Additional physical rendition A A
Alternate recipient allowed A A M -
Alternate recipient assignment - M
Authorizing users indication A E M M
Auto-forwarded indication A E M M
Basic physical rendition A E*
Blind copy recipient indication A E M M
Body part encryption indication A E
Content confidentiality A A
Content integrity A A
Conversion prohibition E E
Conversion prohibition in case of loss of
information - M M
Counter collection A E*
Counter collection with advice A A
Cross-referencing indication A E M M
Deferred delivery E -
Deferred delivery cancellation A - M -
Delivery notification E -
Delivery via Bureaufax service A A
Designation of recipient by directory name A -
Disclosure of other recipients A E
DL expansion history indication - E
DL expansion prohibited A A M -
EMS (express mail service) A E*
Expiry date indication A E M M
Explicit conversion A -
Forwarded IP-message indication A E M M
Grade of delivery selection E E
Hold for delivery - M
Importance indication A E M M
Incomplete copy indication A A - M
Language indication A E
Latest delivery designation A - M -
Message flow confidentiality A -
Message origin authentication A A
Message security labelling A A
Message sequence integrity A A
Multi-destination delivery E -
Multi-part body A E M M
Non-receipt notification request
indication A E M M
Non-repudiation of delivery A A
Non-repudiation of origin A A
Non-repudiation of submission A A
Obsoleting indication A E M M
Ordinary mail A E*
Originator indication E E
Originator requested alternate recipient A - M -
Physical delivery notification by MHS A A
Physical delivery notification by PDS A E*
Physical forwarding allowed A E*
Physical forwarding prohibited A E*
Prevention of non-delivery notification A - M -
Primary and copy recipients indication E E
Probe A -
Probe origin authentication A A
Proof of delivery A A
Proof of submission A A
Receipt notification request indication A A M M
Redirection disallowed by originator A - M -
Redirection of incoming messages - M
Registred mail A A
Registred mail to addressee in person A A
Reply request indication A E
to originator only M M
to other users M M
by a specified date/time M M
Reply IP-message indication E E
Report origin authentication A A
Request for forwarding address A A
Requested delivery method E - - -
Return of content A -
in non-delivery notification M -
in non-receipt notification M M
Sensitivity indication A E
Special delivery A E*
Stored message deletion - E**
Stored message fetching - E**
Stored message listing - E**
Stored message summary - E**
Subject indication E E
Undeliverable mail with return of physical
message A E*
Use of distribution list A A M -
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The only difference in NIST (p.11):
DL expansion prohibited M -
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