CONTENTS

 1     Scope and field of application
 2     Normative references
 3     Abbreviations
 4     General
 5     Model of coordination between the C-plane and U-plane
 6     Sequence of service primitives for coordination of C-plane and U-plane
        6.1     Sequence of primitives at NC endpoint
        6.2     Sequence of primitives at N(c)C endpoint
        6.3     Sequence of primitives at N(u)C endpoint
                  6.3.1     Recommendation X.213 [2] type of service
                  6.3.2     ISDN U-plane Sub-N-Service
        6.4     Sequence of primitives at related NC, N(c)C and N(u)C endpoints
                  6.4.1     Combined state transition diagram for SCF option 1 in case of Recommen­dation X.213 [2] type of service
                  6.4.2     Combined state transition diagram for SCF option 2 in case of ISDN U-plane Sub-N‑Service
 7     Synchronization and coordination function for C-plane and U-plane
 8     Provision of C-plane Sub-N-Service
        8.1     C-plane connection and U-plane connection
 9     Application of SCF to Permanent Virtual Circuit (PVC) arrangement
        9.1     Protocol stack for PVC arrangement
        9.2     Sequence of primitives at N(m)C endpoint
        9.3     Sequence of primitives at related NC, N(m)C and N(u)C endpoints
                  9.3.1     Combined state transition diagram for SCF in support of PVC
        9.4     Synchronization and coordination function in support of PVC
Appendix I  –  Mapping between N(c)-primitive parameters and information elements of DSS 2 messages specified in Recommendation Q.2931