CONTENTS

 1     Introduction
 2     Phased standardization
 3     References
        3.1     Normative references
        3.2     Bibliography
 4     Distributed functional model for IN CS-4
        4.1     Functional entities to support IN CS-4 benchmark features
                  4.1.1     PINT server
                  4.1.2     Service Application Gateway Function (SA-GF)
                  4.1.3     Call Control Function (CCF)
                  4.1.4     Session Manager (SM)
                  4.1.5     Service Switching Function (SSF)
                  4.1.6     Specialized Resource Function (SRF)
                  4.1.7     Service Control Function (SCF)
                  4.1.8     Service Data Function (SDF)
        4.2     Functional interfaces
                  4.2.1     IF1: PINT Server-to-Service Control Function (SCF) interface
                  4.2.2     IF2: PINT server-to-SRF interface
                  4.2.3     IF4: SCF-SRF interface
                  4.2.4     IF5: CCF-to-CCF interface
                  4.2.5     IF7: SCF – SSF interface
                  4.2.6     IF8: SCF – Service application gateway function interface
                  4.2.7     IF9: Service control gateway function-to-GF for distributed service logic platforms interface
        4.3     Explanation of Figure 4-2
        4.4     Lower layer protocol gateway and mapping functions
                  4.4.1     Service Control Gateway Function (SC-GF)
                  4.4.2     Signalling Gateway Function (S-GF)
 5     Functional Relationships and Interfaces
        5.1     Functional relationships and control classes
                  5.1.1     Bearer connection control
                  5.1.2     Non-IN Call Control
                  5.1.3     IN service control
                  5.1.4     Service management control
                  5.1.5     Non-IN call unrelated control
        5.2     Control Architecture Principles
                  5.2.1     Service invocation and control
                  5.2.2     End-user interactions
                  5.2.3     Feature interactions
                  5.2.4     Service management
        5.3     Internetworking
                  5.3.1     Internetworking between IN-structured networks
                  5.3.2     Internetworking with non-IN-structured networks
                  5.3.3     Security
                  5.3.4     Screening
 6     IN/IP implementation scenarios
        6.1     IN/IP inter-working for IN CS-4 to support SIP systems
                  6.1.1     The SIP architecture
                  6.1.2     SIP state call models
                  6.1.3     Functional model
                  6.1.4     Requirements for IN-interaction with SIP-based systems
                  6.1.5     SIP assumptions architecture and implementation issues
        6.2     IN/IP inter-working for IN CS-4 to support H.323 systems
                  6.2.1     H.323 Call routing models
                  6.2.2     Functional model
                  6.2.3     Requirements for IN-interaction with H.323 systems
                  6.2.4     H.323/SIP differences and implementation issues
        6.3     IN/IP inter-working for IN CS-4 to support PINT-based services
        6.4     IN/IP inter-working for IN CS-4 to support SPIRITS-based services
        6.5     Support for distributed service logic servers in IN CS-4
                  6.5.1     SA-GF implementation
                  6.5.2     API Open Service Access (OSA)
        6.6     IN/IP inter-working to support IN CS-4 signalling transport functionality
        6.7     ISDN/IP inter-working to support signalling transport functionality
 7     Functional entities to support IN CS-4 interaction with IMT-2000 features
Annex A – Composite Functional Architecture
        A.1     Functional entities to support IN CS-4 benchmark features
                  A.1.1     PINT Server
                  A.1.2     Service Application Gateway Function (SA-GF)
                  A.1.3     Call Control Function (CCF)
                  A.1.4     Session Manager (SM)
                  A.1.5     Service Switching Function (SSF)
                  A.1.6     Specialized Resource Function (SRF)
                  A.1.7     Service Control Function (SCF)
                  A.1.8     Service Data Function (SDF)
                  A.1.9     Dial Access Gateway Function (D/A GF)
                 A.1.10     Media Gateway (MG)
        A.2     Functional Interfaces
                  A.2.1     IF1: PINT Server-to-Service Control Function (SCF) interface
                  A.2.2     IF2: PINT Server-to-SRF interface
                  A.2.3     IF4: SCF-SRF interface
                  A.2.4     IF5: CCF-to-CCF interface
                  A.2.5     IF6: SDF-to-Dial Access (D/A) gateway interface
                  A.2.6     IF7: SCF – SSF interface
                  A.2.7     IF8: SCF – Service Application Gateway Function interface
                  A.2.8     IF9: Service Control Gateway Function-to-GF for distributed service logic platforms interface
                  A.2.9     IF10: CCF-to-Media Manager (MG) interface
                 A.2.10     IF12: Media Manager-to-Resource Manager interface
                 A.2.11     IF13: SRF-to-Media Manager interface
                 A.2.12     IF14: CCF-to-D/A GF (Dial-up Access Gateway function)
        A.3     Explanation of Figure A.2
        A.4     Lower layer protocol gateway and mapping functions
                  A.4.1     Service Control Gateway Function (SC-GF)
                  A.4.2     Signalling Gateway Function (S-GF)
Appendix I – Example information flows between IP-networks and IN
        I.1        IN-based service for Dial-up Internet Access
        I.2        Information Flow for Click-to-Dial (CTD) Service
        I.3        Information flow for Click-to-Fax (CTF) service
        I.4        Information flow for Internet Call Waiting (ICW) service
        I.5        Example information flows of IN-IPT inter-working
                  I.5.1     Information flow for H.323 terminal-originated 800 call
                  I.5.2     Information flow for GW-initiated 800 call
        I.6        IN interaction with SIP call control message flows
                  I.6.1     Proposed registration process
                  I.6.2     Originating call with INAP CS-3 interaction
                  I.6.3     Terminating call with INAP CS-3 interaction
        I.7        H.323 IN interaction message flows
                  I.7.1     Registration
                  I.7.2     Originating call requiring INAP interaction
                  I.7.3     Terminating call requiring INAP CS-4 interaction
        I.8        SIP INAP personal mobility service message flows
                  I.8.1     IN-IP personal mobility service definition
                  I.8.2     IN-IP personal mobility service information flows