1 Scope
2 Conformance
3 References (normative)
4 Definitions
  4.1 External definitions
  4.2 Other definitions
       4.2.1 Activating PINX
       4.2.2 Deactivating PINX
       4.2.3 Inter-PINX link
       4.2.4 Interrogating PINX
       4.2.5 Path retention
       4.2.6 Served User PINX
5 Acronyms
6 Signalling protocol for the support of SS-DND and SS-DNDO
  6.1 SS-DND and SS-DNDO description
  6.2 SS-DND and SS-DNDO operational requirements
       6.2.1 Provision/withdrawal
       6.2.2 Requirements on a Terminating PINX
       6.2.3 Requirements on an Originating PINX
       6.2.4 Requirements on an Activating PINX
       6.2.5 Requirements on a Deactivating PINX
       6.2.6 Requirements on an Interrogating PINX
       6.2.7 Requirements on a SS-DND Served User PINX
       6.2.8 Requirements on a Transit PINX
  6.3 SS-DND and SS-DNDO coding requirements
       6.3.1 Operations
       6.3.2 Notifications
       6.3.3 Information elements
       6.3.4 Messages
  6.4 SS-DND and SS-DNDO state definitions
       6.4.1 State at the Terminating PINX
       6.4.2 States at the Originating PINX
       6.4.3 States at the Activating PINX
       6.4.4 States at the Deactivating PINX
       6.4.5 States at the Interrogating PINX
       6.4.6 State at the SS-DND Served User PINX
  6.5 SS-DND signalling procedures
       6.5.1 Actions at the Terminating PINX
       6.5.2 Actions at the Originating PINX
       6.5.3 Actions at the Activating PINX
       6.5.4 Actions at the Deactivating PINX
       6.5.5 Actions at the Interrogating PINX
       6.5.6 Actions at the Served User PINX
       6.5.7 Actions at a Transit PINX
  6.6 SS-DNDO signalling procedures
       6.6.1 Actions at the Terminating PINX
       6.6.2 Actions at the Originating PINX
       6.6.3 Actions at a Transit PINX
  6.7 Impact of interworking with public ISDNs
       6.7.1 SS-DND
       6.7.2 SS-DNDO
  6.8 Impact of interworking with non-ISDNs
       6.8.1 SS-DND
       6.8.2 SS-DNDO
  6.9 Protocol interactions between SS-DND and other
       supplementary services and ANFs
       6.9.1 Interaction between SS-DND and Calling Name
               Identification Presentation (SSCNIP)
       6.9.2 Interaction between SS-DND and Connected Name
               Identification Presentation (SS-CONP)
       6.9.3 Interaction between SS-DND and Call Completion
               to Busy Subscriber (SS-CCBS)
       6.9.4 Interaction between SS-DND and Call Completion
               on No Reply (SS-CCNR)
       6.9.5 Interaction between SS-DND and Call Transfer
               (SS-CT)
       6.9.6 Interaction between SS-DND and Call Forwarding
               Unconditional (SS-CFU)
       6.9.7 Interaction between SS-DND and Call Forwarding
               Busy (SS-CFB)
       6.9.8 Interaction between SS-DND and Call Forwarding
               No Reply (SS-CFNR)
       6.9.9 Interaction between SS-DND and Path Replacement
               (ANF-PR)
       6.9.10 Interaction between SS-DND and Call Offer (SS-CO)
       6.9.11 Interaction between SS-DND and Do Not Disturb
               Override (SS-DNDO)
       6.9.12 Interaction between SS-DND and Call Intrusion
              (SS-CI)
  6.10 Protocol interactions between SS-DNDO and other
       supplementary services and ANFs
       6.10.1 Interaction between SS-DNDO and Calling Name
               Identification Presentation (SS-CNIP)
       6.10.2 Interaction between SS-DNDO and Connected Name
               Identification Presentation (SS-CONP)
       6.10.3 Interaction between SS-DNDO and Call Completion
               to Busy Subscriber (SSCCBS)
       6.10.4 Interaction between SS-DNDO and Call Completion
               on No Reply (SS-CCNR)
       6.10.5 Interaction between SS-DNDO and Call Transfer
               (SS-CT)
       6.10.6 Interaction between SS-DNDO and Call Forwarding
               Unconditional (SS-CFU)
       6.10.7 Interaction between SS-DNDO and Call Forwarding
               Busy (SS-CFB)
       6.10.8 Interaction between SS-DNDO and Call Forwarding
               No Reply (SS-CFNR)
       6.10.9 Interaction between SS-DNDO and Path Replacement
               (ANF-PR)
       6.10.10 Interaction between SS-DNDO and Call Offer
               (SS-CO)
       6.10.11 Interaction between SS-DNDO and Do Not Disturb
               (SS-DND)
       6.10.12 Interaction between SS-DNDO and Call Intrusion
               (SS-CI)
  6.11 SS-DND and SS-DNDO parameter values (timers)
       6.11.1 Timer T1
       6.11.2 Timer T2
       6.11.3 Timer T3
       6.11.4 Timer T4
Annex A - Signalling protocol for the support of Path Retention
Annex B - Protocol Implementation Conformance Statement (PICS)
          proforma
Annex C - Examples of message sequences
Annex D - Specification and Description Language (SDL)
          representation of procedures
Annex E - Imported ASN.1 definitions relating to numbers
Annex F - ASN.1 definitions according to ITU-T Recs. X.208/X.209