ECMA 202 : 2ED 97

1 Scope
2 Conformance
3 References (normative)
4 Definitions
  4.1 External definitions
  4.2 Other definitions
      4.2.1 Busy
      4.2.2 Conference type connection
      4.2.3 Consultation
      4.2.4 Consultation timer
      4.2.5 Established call
      4.2.6 Forced release
      4.2.7 Immediate invocation
      4.2.8 Impending intrusion state
      4.2.9 Impending intrusion warning notification
      4.2.10 Implementation option
      4.2.11 Intruding call
      4.2.12 Intrusion state
      4.2.13 Intruding call connected notification
      4.2.14 Isolation
      4.2.15 Path retention
      4.2.16 Served user
      4.2.17 Time to intrusion
      4.2.18 User B
      4.2.19 User C
      4.2.20 Wait on busy state
5 Acronyms
6 SS-CI stage 1 specification
  6.1 Description
      6.1.1 General description
      6.1.2 Qualifications on applicability to
             telecommunication services
  6.2 Procedures
      6.2.1 Provision/withdrawal
      6.2.2 Normal procedures
      6.2.3 Exceptional procedures
  6.3 Interactions with other supplementary services and ANFs
      6.3.1 Calling Line Identification Presentation (SS-CLIP)
      6.3.2 Connected Line Identification Presentation
             (SS-COLP)
      6.3.3 Calling/Connected Line Identification Restriction
             (SS-CLIR)
      6.3.4 Calling Name Identification Presentation (SS-CNIP)
      6.3.5 Connected Name Identification Presentation
             (SS-CONP)
      6.3.6 Calling/Connected Name Identification Restriction
             (SS-CNIR)
      6.3.7 Completion of Calls to Busy Subscriber (SS-CCBS)
      6.3.8 Completion of Calls on No Reply (SS-CCNR)
      6.3.9 Call Transfer (SS-CT)
      6.3.10 Call Forwarding Unconditional (SS-CFU)
      6.3.11 Call Forwarding Busy (SS-CFB)
      6.3.12 Call Forwarding No Reply (SS-CFNR)
      6.3.13 Call Deflection (SS-CD)
      6.3.14 Path Replacement (ANF-PR)
      6.3.15 Do Not Disturb (DND)
      6.3.16 Do Not Disturb Override (DNDO)
      6.3.17 Call Offer (CO)
  6.4 Interworking considerations
  6.5 Overall SDL
7 SS-CI stage 2 specification
  7.1 Functional model
      7.1.1 Functional model description
      7.1.2 Description of functional entities
      7.1.3 Relationship of functional model to basic call
             functional model
  7.2 Information flows
      7.2.1 Definition of information flows
      7.2.2 Relationship of information flows to basic call
             information flows
      7.2.3 Examples of information flow sequences
  7.3 Functional entity actions
      7.3.1 Functional entity actions of FE1
      7.3.2 Functional entity actions of FE2
      7.3.3 Functional entity actions of FE3
      7.3.4 Functional entity actions of FE4
      7.3.5 Functional entity actions of FE5
  7.4 Functional entity behaviour
      7.4.1 Behaviour of FE1
      7.4.2 Behaviour of FE2
      7.4.3 Behaviour of FE3
      7.4.4 Behaviour of FE4
      7.4.5 Behaviour of FE5
  7.5 Allocation of functional entities to physical equipment
  7.6 Interworking considerations

Defines the Call Intrusion supplementary service (SS-CI) applying to various basic services supported by Private Integrated Services Networks (PISNs). This is a supplementary service, enabling, on request from the service user, establishment of communication between a busy called user (user B) by breaking into an established call between user B and a third user (user C).