INTERNATIONAL  TELECOMMUNICATION  UNION

		     ITU-T RECOMMENDATION SUMMARY


Rec. No. : F.435

Title : Message handling: electronic data interchange messaging 
	service

Study Group : I - Services

Version : New

Date of adoption : 1991

Notes :	


Recommendation F.435 is one of a set of Recommendations for message 
handling. The entire set provides a comprehensive specification for 
message handling comprising any number of cooperating open-systems.

Message handling systems and services enable users to exchange 
messages on a store-and-forward basis. A message submitted by one 
user, the originator, is conveyed by the message transfer system 
(MTS), the principal component of a larger message handling system 
(MHS), and is subsequently delivered to one or more additional users, 
the message's recipients.

An MHS comprises a variety of interconnected functional entities. 
Message transfer agents (MTAs) cooperate to perform the 
store-and-forward message transfer function. Message stores (MSs) 
provide storage for messages and enable their submission, retrieval 
and management. User agents (UAs) help users access MHS. Access units 
(AUs) provide links to other communication systems and services of 
various kinds (e.g., other telematic services, postal services).

Recommendation F.435 defines the overall system and service 
description of the message handling application called EDI messaging.



To order the complete text of this Recommendation, please use the 
Order Form for ITU-T Recommendations. An electronic version of this 
form is available on ITUDOC (Winword: UPI=ITU-5265; ASCII: UPI=ITU-2488).