scope:

This final draft ETS specifies simple file transfer as a teleservice over the Integrated Services Digital Network (ISDN) using File Transfer Access and Management (FTAM - EN 30607 Parts 1 to 6 [5] (incorporating the corrigenda) and ISO/IEC 8571, Parts 1 to 5 [6]).

A basic ETS, fully compatible with the Simple File Transfer ETS as described in ISO/IEC ISP 10607 Parts 1 to 3 [1], [2], [3] & [4], the equivalent European Norm, EN 30607 [5], and in ISO TR 10000-2 is described. Conditional extensions which cover additional ETSI requirements are also specified. An implementation claiming full conformance to this teleservice is to support all of these conditional extensions. Basic and full implementations may interwork, as the extensions can be negotiated out in the initialization phase. The specification of the mapping between ISO Session Service and a Transport Service running over ISDN is based on ETS 300 080 [13].

This ETS is presented in a number of clauses. Clauses 6 to 9 specify the FTAM specific part of the ETS and is based on "Simple File Transfer", EN 30607, Part 3 [5]. It could become the first of a family of ETSs for the use of FTAM over ISDN, with additional, more powerful ETSs based on ISO/IEC ISP 10607, Parts 4 to 6.

Clause 10 gives the "Specification of the ACSE, Presentation and the Session protocols for the use by FTAM", and notes the additional constraints to EN 30607, Part 1 [5].

Clauses 11 and 12 give lower layer application rules for the Transport Service to be used based on ETS 300 080 [13]. Again it notes the additional constraints in this ETS for the support of the teleservice "File Transfer Access and Management (FTAM) over ISDN, based on simple file transfer".

The ETS also contains three annexes. Annex A (normative) is a delta ETS Implementation Conformance Statement Requirements List for FTAM, based on annex A of EN 30607-3 [5], the second (annex B (informative)) is a set of recommendations on parameter combinations through the lower four layers to achieve optimum throughput and the third (Annex C (informative)), provides a bibliography of nonnormative references given in this ETS.

The FTAM part of the ETS is based on (and conformant to) EN 30607-3 [5] which has additional European specific text preceding the ISO ISP text. It also, however, references ISO/IEC ISP 10607-3 [4] for international completeness. It is also aligned with the recommendations in the CEC European Procurement Handbook for Open Systems (EPHOS). For example, EPHOS defines that for a general purpose system for terminal-to-terminal or to host, all four possible roles (initiator and responder, sender and receiver) are implemented as is needed for a system claiming full conformance to the teleservice.

Additional restrictions are defined for the specific ISDN environment and these are clearly identified in clause 9.

Some of the European Workshop for Open Systems (EWOS) conformance Abstract Test Suites (ATS) will be selected and can be applied to the teleservice FTAM Simple File Transfer over ISDN with a few changes and additions. This is used with ISDN specific additions for the Transport mapping.