Section 1 - General
1 Scope
2 Field of application
3 References
4 Definitions
   4.1 Corporate telecommunication Network (CN)
   4.2 PISN Access
   4.3 Inter-PINX Connection
   4.4 Interconnecting Network
   4.5 Internet
   4.6 Intervening Network
   4.7 Intranet
   4.8 Private Integrated Services Network (PISN)
   4.9 Private Integrated Services Network Exchange
        (PINX)
   4.10 User
   4.11 PISN User
   4.12 Virtual Private Network (VPN)
5 Abbreviations
6 Structure of this Technical Report
Section 2 - Basic Concepts
7 Reference Configuration for PINX Calls
8 Architecture
   8.1 PISN Topology
   8.2 Routeing Hierarchy
   8.3 Capability Structures of a PISN
   8.4 Capabilities of a PISN
        8.4.1 PISN Low Layer Capabilities
        8.4.2 Access Capability
   8.5 PISNs connected to the Public ISDN
        8.5.1 Interworking of PISN and Public ISDN
               Capabilities
        8.5.2 Solutions for Accessing the Public ISDN
               Packet Switching Capabilities
   8.6 Interconnected PINXs
        8.6.1 Overlay Concept
        8.6.2 Capability Structure of a PISN Employing
               IVNs or ICNs
9 Extended Protocol Reference Model
   9.1 Planes for Communication across the IVN
        9.1.1 IVN Control Plane (NC)
        9.1.2 IVN User Plane (NU)
   9.2 Planes for Communication across the PISN
        9.2.1 PISN Control Plane (PC)
        9.2.2 PISN User Plane (PU)
   9.3 Planes for Communication across the PISN Access
        9.3.1 TE Control Plane (TC)
        9.3.2 TE User Plane (TU)
   9.4 Planes for Communication across an ICN
Section 3 - Inter-PINX Connections
10 Introduction
   10.1 Multiple Instances of Q and C Reference Points
   10.2 Shared Access Use
   10.3 Mapping Functional Grouping (MP)
11 Scenarios
Section 4 - CN Addressing
12 General
   12.1 Smallest Addressable Entity in a PISN
   12.2 Addressing Principles
        12.2.1 The ISO Global OSI Network Addressing
               Principle
        12.2.2 The ITU-T ISDN Addressing Principle
        12.2.3 The Domain Specific Part Addressing
               Principles
   12.3 Purpose of Addresses
        12.3.1 Selection
        12.3.2 Identification
   12.4 Address Interworking
   12.5 Address Values of the Public ISDN Addressing
        Domain
   12.6 Addressing Principles in LANs
13 CN numbering impact on public networks and their
   numbering plans
   13.1 Current Situation
   13.2 Ideal Situation
        13.2.1 Structure of the globally unique CN
        Number
14 PISN Numbering Concept
   14.1 Numbering Plans of PISNs
   14.2 Private Numbering Plan Structure
   14.3 Content of the Number Information in a Private
        Numbering Plan
   14.4 Reference Configuration for PISN Address
        Treatment
   14.5 Knowledge about other Numbering Plans
15 Support of subaddressing in PISNs
   15.1 Embedment of OSI Network Layer Addresses in
        Concatenated PISN Addressing Information
   15.2 Embedment of Other Information in the Subaddress
   15.3 Conveyance of Subaddresses through a PISN
Section 5 - Routeing
16 General
17 Routeing Requirements
   17.1 Functional Requirements
        17.1.1 Factors Influencing Routeing through a
               PISN
        17.1.2 Factors Influencing Routeing to Another
               Network
        17.1.3 Factors Influencing the Selection of
               Networks beyond the Next Network
        17.1.4 Other Factors Influencing Route Selection
   17.2 Performance Requirements
18 Routeing Mechanisms
   18.1 Routeing Information Base
   18.2 Source and Destination Routeing
        18.2.1 Advantages of Source Routeing Compared
               with Destination Routeing
        18.2.2 Advantages of Destination Routeing
               Compared with Source Routeing
        18.2.3 Hybrid Methods
        18.2.4 Impact on Signalling for Call Control
   18.3 Subjects for Standardization
Section 6 - Services
19 General Service Considerations
   19.1 Classification of Services
   19.2 Control of Basic Services
   19.3 Control of Supplementary Services
   19.4 Specification Method for ECMA Standards on
        Services
        19.4.1 Service Model for Stage 1 Specifications
        19.4.2 Service Model for Stage 2 Specifications
   19.5 Relationship to Services Provided in Public ISDNs
   19.6 Service Interworking between PISNs and Public ISDNs
   19.7 Additional Network Features
Annex A - Off-premises PISN Users
Annex B - PINX Connections to Public ISDNs
Annex C - Interworking for Identification Numbers between
          Public ISDN and PISN