CONTENTS

 1     Introduction
 2     Scope
 3     References
 4     Definitions
 5     Abbreviations
 6     Interworking
        6.1     Numbering plans
                  6.1.1     Escape codes
                  6.1.2     Prefixes
                  6.1.3     Allocation of a DNIC to an ISDN or PSTN
        6.2     Methods
                  6.2.1     Dial-in method
                  6.2.2     Escape code method
                  6.2.3     NPI method
        6.3     Subscriber dialling procedures
                  6.3.1     Single stage dialling
                  6.3.2     Double stage dialling
        6.4     Escape code method versus NPI method
        6.5     Reconciliation between the escape code method and the NPI method
        6.6     Internetwork implementation
        6.7     Man-machine interface procedures
 7     Interworking diagrams
        7.1     Conventions used in the interworking diagrams (Figures 2 through 28)
        7.2     Index of interworking diagrams
                  7.2.1     Section A: Scenarios for interworking
                  7.2.2     Section B: Bearer capability interworking that requires no numbering plan interworking
                  7.2.3     Section C: Numbering plan interworking
                  7.2.4     Section D: Interworking with terminals that have dual numbers
        7.3     Interworking diagrams
 8     Recommendation history