ISO IEC ISP 10612-7-1995 PDF

Full title and description

Information technology — International Standardized Profile RD — Relaying the MAC service using transparent bridging — Part 7: Profile RD51.53 (CSMA/CD LAN - Token Ring LAN). This International Standardized Profile (ISP) specifies a profile for MAC relaying (transparent bridging) to enable interoperability between CSMA/CD and Token Ring LAN subnetworks.

Abstract

This document (ISO/IEC ISP 10612-7:1995) defines Profile RD51.53, a set of specifications and combinations of OSI base standards that together provide a MAC relay function implemented by interworking units operating between CSMA/CD and Token Ring LANs. It is targeted at implementers of transparent bridging functions that must interconnect heterogeneous LAN technologies within the OSI framework.

General information

• Status: Withdrawn (listed as withdrawn in ISO records).
• Publication date: June 1995 (Edition 1, 1995-06).
• Publisher: ISO/IEC (ISO/IEC JTC 1 technical committee).
• ICS / categories: 35.100.05 — Multilayer applications.
• Edition / version: Edition 1 (First edition, 1995).
• Number of pages: 4 (official ISO record shows 4 pages).

Scope

Specifies an international standardized profile (RD) for relaying the MAC service by means of transparent bridging between CSMA/CD and Token Ring LANs. It applies to interworking units that implement MAC relay functionality within an OSI environment and defines mandatory/optional features, normative references and the scenario/position within the overall ISP taxonomy. The profile is identified as RD51.53.

Key topics and requirements

• Definition of Profile RD51.53 for transparent bridging between CSMA/CD and Token Ring LAN technologies.
• Combination and selection of OSI base standards required to provide MAC relay services.
• Normative references and definitions needed for implementers to achieve interoperable bridging.
• Specification of mandatory and optional capabilities for interworking units (profile-level conformance statements).
• Guidance on scenario and taxonomy placement within the International Standardized Profile series.

Typical use and users

Implementers of network bridging devices and gateway/interworking units that need to connect Ethernet (CSMA/CD) and Token Ring LAN segments in environments using OSI layering. Also relevant for system integrators, test laboratories, and standards/quality teams specifying or validating conformance to standardized profiles. Network architects working on legacy LAN interworking scenarios may consult this profile for historical interoperability requirements.

Related standards

Part of the ISP 10612 series (International Standardized Profile RD family) and related to other ISO/IEC standards for OSI MAC service and bridging. The document was adopted in regional/European variants as EN ISP 10612-7 and later referenced in national implementations; its lifecycle shows withdrawal/obsolescence in standards repositories.

Keywords

ISO/IEC ISP 10612-7, International Standardized Profile, RD51.53, MAC relay, transparent bridging, CSMA/CD, Token Ring, LAN interworking, OSI, bridging profile, conformance.

FAQ

Q: What is this standard?

A: ISO/IEC ISP 10612-7:1995 is an International Standardized Profile that specifies Profile RD51.53 for relaying the MAC service using transparent bridging to interconnect CSMA/CD and Token Ring LAN subnetworks.

Q: What does it cover?

A: It covers the selection and combination of OSI base standards and the mandatory/optional features needed to implement MAC relay (transparent bridging) between Ethernet-style (CSMA/CD) and Token Ring LANs, aimed at interworking units operating in an OSI environment.

Q: Who typically uses it?

A: Network device implementers, system integrators, interoperability test houses, and standards teams concerned with bridging heterogeneous LAN technologies under OSI-based profiles. It is also of historical interest to architects maintaining legacy Token Ring/Ethernet interworking.

Q: Is it current or superseded?

A: The ISO record lists this profile as Withdrawn; regional adoptions were also withdrawn or made obsolete. Recorded withdrawal information appears in standards repositories (withdrawal noted in ISO metadata and by national/regional bodies). AENOR records a withdrawal action dated 19 May 2009 for its listing of the ISO/IEC entry.

Q: Is it part of a series?

A: Yes — it is Part 7 of the ISP 10612 family of International Standardized Profiles (RD series). Other parts in the 10612 series address related profiles and scenarios for MAC relaying and interworking.

Q: What are the key keywords?

A: RD51.53, MAC relay, transparent bridging, CSMA/CD, Token Ring, ISP 10612, OSI interworking, network bridging, conformance profile.