CSA ISO/IEC ISP 10609-20 : 0

Foreword
Introduction
1 Scope
   1.1 General
   1.2 Position within the taxonomy
   1.3 Scenario
2 Normative references
3 Definitions
4 Abbreviations
5 Overview of multi-part structure for OSI/ISDN
   T-profiles
   5.1 Description of the multi-part OSI-ISDN T-profile
       architectural structure
   5.2 B and D-channel protocol stacks
   5.3 Architectural simplicity of the multi-part
       OSI/ISDN T-profile structure
Annex A: Channel selection through call offering
Annex B: Titles of profiles and all ISP parts referenced
         in the OSI/ISDN T-profiles

Applicable to end systems concerned with operating in the Open Systems Interconnection (OSI) environment. Specifies a combination of OSI standards, which collectively provide the connection-mode Transport Service using the connection-mode Network Service. Provides an overview of the multi-part structure for the ISDN TA profiles (which provide the Connection-mode Transport Service (COTS) using the Connectionless-mode Network Service (CLNS)) and for the ISDN TC and TD profiles (which provide the Connection-mode Transport Service (COTS) using the Connection-mode Network Service (CONS)). Covers the taxonomy elements using an ISDN subnetwork with Transport Groups TA, TC and TD as described in ISO/IEC TR 10000-2. In particular, it provides an overview and description of a generalized multi-part structure covering the following ISDN ISPs: Tx 1131, Tx 1231, Tx 4111, Tx 4211, Tx 4311q, Tx 4321q and Tx 4331 (Tx=TA, TC and TD and q=1 or 2).