1

Scope

1.1 General This part of ISO/IEC ISP 12062 covers access to a Message Transfer System (MTS) in an Interpersonal Messaging (IPM) environment using the P3 MTS Access Protocol (see also figure 1). These specifications form part of the Interpersonal Messaging application functions, as defined in the parts of ISO/IEC ISP 12062, and are based on the Common Messaging content type-independent specifications in ISO/IEC ISP 10611.

An MTA or an MTS-user which conforms to profile AMH23 as specified in this part of ISO/IEC ISP 12062 shall support profile AMH12 as specified in ISO/IEC ISP 10611-4. An MTA or an MTS-user which conforms to profile AMH25 as specified in this part of ISO/IEC ISP 12062 shall support prof ile AMH14 as specified in ISO/IEC ISP 10611-4.

1.2 Position within the taxonomy This part of ISO/IEC ISP 12062 is the fourth part of a multipart ISP identified in ISO/IEC TR 10000-2 as ""AMH2, Message Handling Systems - Interpersonal Messaging"".

This part of ISO/IEC ISP 12062 specifies the following profiles:

AMH23 - IPM Requirements for MTS Access (P3) AMH25 - IPM Requirements for MTS 95 Access (P3)

The AMH23 and AMH25 profiles may be combined with any T-Profiles (see ISO/IEC TR 10000) specifying the OSI connection-mode Transport service.

1.3 Scenario The model used is one of access to an MTS by an IPM MTS-user - specifically, the intercommunication between a message transfer agent (MTA) and an IPM MTS-user using the P3 protocol, as shown in figure 1.

The AMH23 and AMH25 profiles cover all aspects of the MTS Abstract Service, as defined in clause 8 of ISO/IEC 10021-4, when realized using the P3 protocol in an IPM environment.

The OSI upper layer services and protocols to support the Message Handling Systems functions covered by the AMH23 and AMH25 profiles are specified in subclause 1.3 of ISO/IEC ISP 10611-4.