ECMA 264 : 3ED 2001

1 Scope
2 Conformance
3 References (normative)
4 Definitions
  4.1 External definitions
  4.2 Called user
  4.3 Calling user
  4.4 Call interruption
  4.5 Call Priority Interruption Capability Level
       (CPICL)
  4.6 Call Priority Interruption Protection Level
       (CPIPL)
  4.7 Call protection
  4.8 Established call
  4.9 Established call user
  4.10 Established call user's PINX
  4.11 Forced release
  4.12 Inter-PINX link
  4.13 Interrupting PINX
  4.14 Non-priority call
  4.15 Priority call
  4.16 Protected call
5 List of acronyms
6 Signalling protocol for the support of SS-CPI(P)
  6.1 SS-CPI(P) description
  6.2 SS-CPI(P) operational requirements
       6.2.1 Requirements on the Originating PINX
       6.2.2 Requirements on the Terminating PINX
       6.2.3 Requirements on a Transit PINX
       6.2.4 Requirements on the Interrupting PINX
       6.2.5 Requirements on the Established call
              user's PINX
  6.3 SS-CPI(P) coding requirements
       6.3.1 Operations
       6.3.2 Notifications
       6.3.3 Information elements
       6.3.4 Messages
  6.4 SS-CPI state definitions
       6.4.1 States at the Originating PINX
       6.4.2 States at the Transit PINX
       6.4.3 States at the Interrupting PINX
  6.5 SS-CPIP state definitions
       6.5.1 States at the Originating PINX
       6.5.2 States at the Transit PINX
       6.5.3 States at the Terminating PINX
  6.6 SS-CPI signalling procedures for activation,
       deactivation and registration
  6.7 SS-CPIP signalling procedures for activation,
       deactivation and registration
  6.8 SS-CPI signalling procedures for invocation
       and operation
       6.8.1 Actions at the Originating PINX
       6.8.2 Actions at a Transit PINX
       6.8.3 Actions at the Interrupting PINX
       6.8.4 Actions at the Terminating PINX
       6.8.5 Actions at the Established call user's
              PINX
  6.9 SS-CPIP signalling procedures for invocation
       and operation
       6.9.1 Actions at the Originating PINX
       6.9.2 Actions at a Transit PINX
       6.9.3 Actions at the Terminating PINX
  6.10 SS-CPI impact of interworking with public ISDNs
  6.11 SS-CPIP impact of interworking with public ISDNs
  6.12 SS-CPI impact of interworking with non-ISDNs
  6.13 SS-CPIP impact of interworking with non-ISDNs
  6.14 Protocol interactions between SS-CPI(P) and other
       supplementary services and ANFs
       6.14.1 Interaction with Calling Name Identification
               Presentation (SS-CNIP)
       6.14.2 Interaction with Connected Name Identification
               Presentation (SS-CONP)
       6.14.3 Interaction with Completion of Call to Busy
               Subscriber (SS-CCBS)
       6.14.4 Interaction with Completion of Call on
               No Reply (SS-CCNR)
       6.14.5 Interaction with Call Transfer (SS-CT)
       6.14.6 Interaction with Call Forwarding Unconditional
               (SS-CFU)
       6.14.7 Interaction with Call Forwarding Busy (SS-CFB)
       6.14.8 Interaction with Call Forwarding No Reply
               (SS-CFNR)
       6.14.9 Interaction with Call Deflection (SS-CD)
       6.14.10 Interaction with Path Replacement (ANF-PR)
       6.14.11 Interaction with Call Offer (SS-CO)
       6.14.12 Interaction with Call Intrusion (SS-CI)
       6.14.13 Interaction with Do not Disturb (SS-DND)
       6.14.14 Interaction with Do not Disturb Override
               (SS-DNDO)
       6.14.15 Interaction with Advice of Charge (SS-AOC)
       6.14.16 Interaction with Recall (SS-RE)
       6.14.17 Interaction with Call Interception (ANF-CINT)
       6.14.18 Interaction with Transit Counter (ANF-TC)
       6.14.19 Interaction with Wireless Terminal Location
               Registration (SS-WTLR)
       6.14.20 Interaction with Wireless Terminal Incoming
               Call (ANF-WTMI)
       6.14.21 Interaction with Wireless Terminal Outgoing
               Call (ANF-WTMO)
       6.14.22 Interaction with Wireless Terminal
               Authentication of a WTM user (SS-WTAT)
       6.14.23 Interaction with Wireless Terminal
               Authentication of a PISN (SS-WTAN)
       6.14.24 Interaction with Message Waiting Indication
               (SS-MWI)
       6.14.25 Interaction with Common Information
               (ANF-CMN)
  6.15 SS-CPI parameter values (timers)
       6.15.1 Timer T1
Annex A - Protocol Implementation Conformance
          Statement (PICS) proforma
Annex B - Examples of message sequences
Annex C - Specification and Description Language (SDL)
          representation of procedures
Annex D - ASN.1 definitions according to ITU-T Recs.
          X.208/X.209

Defines the signalling protocol for supporting the Call priority interruption (SS-CPI) and Call Priority Interruption Protection (SS-CPIP) supplementary services at the Q reference point between Private Integrated Services Network exchanges (PINXs) connected within a Private Integrated Services Network (PISN). Not applicable to calls using the circuit-mode multiple rate bearer service.