ECMA TR/76 : 1ED 99

1 Scope
2 References
3 Definitions
   3.1 External Definitions
   3.2 Special Definitions
        3.2.1 Attached PINX
        3.2.2 Centrex
        3.2.3 Channel
        3.2.4 Corporate Telecommunication Network (CN)
        3.2.5 Interconnecting Network (ICN)
        3.2.6 Inter-PINX Connection (IPC)
        3.2.7 Inter-PINX Link (IPL)
        3.2.8 Relay Node (functionality)
        3.2.9 Signalling Functions
        3.2.10 ScenSIG
        3.2.11 Scenario
        3.2.12 Semi-permanent connection
        3.2.13 Virtual Private Network (VPN)
4 Symbols and Abbreviations
5 Introduction
   5.1 PINX Reference Configuration
   5.2 Additional Descriptions
        5.2.1 Inter-PINX Connection (IPC)
        5.2.2 Inter-PINX Link (IPL)
        5.2.3 Relationship between IPLs and IPCs
6 Details of the Functional Groupings as Relevant for
   Scenario Handling
   6.1 Mapping Unit (MP)
        6.1.1 Physical Adaptation
        6.1.2 Mapping Matrix
   6.2 Inter-PINX Connection Control (ICC)
        6.2.1 IPC Control
        6.2.2 IPL Control
   6.3 Scenario Management
        6.3.1 Link Resource Management
        6.3.2 Mapping Management
        6.3.3 IPC Management
   6.4 Complete PINX Model
7 Configuration Variants
   7.1 PINX with Multiple IPLs
   7.2 More than One Type of IVN
   7.3 Different Spread of IPCs among the Interfaces
        at the Two PINXs
8 IPL Establishment and administration procedures
   8.1 IPL Establishment using ScenSIG
        8.1.1 Static Pre-Conditions
        8.1.2 Establishment of a First IPC
        8.1.3 IPL Initialisation Process
        8.1.4 Establishment of the D[Q] - Channel
        8.1.5 Establishment of U[Q] - Channels
        8.1.6 Channel Mapping
   8.2 IPL Establishment Procedures without using
        ScenSIG
   8.3 IPL Administration Procedures
9 Items for Future Standardisation
   9.1 Mapping Function
        9.1.1 Physical Adoption
        9.1.2 Mapping Matrix
        9.1.3 Static Pre-Conditions
   9.2 ScenSIG
        9.2.1 IPL Establishment and Administration
               Procedures
        9.2.2 Bearer Modification Procedures
   9.3 Bearer Conditioning
10 Scenarios
   10.1 Scenarios: Dedicated Transmission Systems
        10.1.1 Scenario 1.1 - Unstructured Transmission Link
        10.1.2 Scenario 1.2 - Structured Transmission Link
   10.2 Scenarios: Semi-Permanent IVN Connections
        10.2.1 Scenario 2.1 - Semi-permanent Circuit Switched
        10.2.2 Scenario 2.2 - Permanent Virtual Call
   10.3 Scenarios: On-Demand Public Network Connections
        10.3.1 Scenario 3.1 - On-demand Circuit Switched
        10.3.2 Scenario 3.2 - ISDN Call with User-to-User
               Signalling
        10.3.3 Scenario 3.3 - On Demand Virtual Call
   10.4 Scenarios: Virtual Private Network
        10.4.1 Introduction
        10.4.2 Access Arrangements
        10.4.3 Scenario 4.1 - Transit PINX
        10.4.4 Scenario 4.2 - Centrex
        10.4.5 Scenario 4.3 - Gateway to another network
Annex A - Attribute Values
Annex B - Scenario 4.4 - Relay Node

Concerned with inter-PINX connections (IPC) that are provided by Intervening Networks (IVN), and the way in which these are handled by PINXs to provide a platform for inter-PINX communication. PISN is a network comprising either on PINX or more than one PINX interconnected by Inter-PINX connections. Different types of IVNs can be used to provide IPCs, in accordance with the scenarios indicated in ISO/IEC 11579-1. These are Overlay Scenarios in that they enable the services of the PISN to operate transparently across an IVN. In general but depending on the type of IVN, procedures and signalling protocols between the PINXs are needed for the establishment, maintenance and release of IPCs. Appropriate standardisation of these procedures and signalling protocols is necessary.