ECMA 177 : 3ED 2001

1 Scope
2 Conformance
3 References (normative)
4 Definitions
  4.1 External definitions
  4.2 Other definitions
      4.2.1 Additional network feature
      4.2.2 Alerting
      4.2.3 Answered
      4.2.4 Call, basic call
      4.2.5 Primary call
      4.2.6 Secondary call
      4.2.7 Transfer by Join
      4.2.8 Transfer by rerouteing
      4.2.9 User A
      4.2.10 User B
      4.2.11 User C
5 Acronyms
6 SS-CT stage 1 specification
  6.1 Description
      6.1.1 General description
      6.1.2 Qualifications on applicability to
             telecommunications 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 Subscribers (SS-CCBS)
      6.3.8 Completion of Calls on No Reply (SS-CCNR)
      6.3.9 Call Forwarding Services
      6.3.10 Path Replacement (ANF-PR)
  6.4 Interworking considerations
      6.4.1 User B and/or User C in another network
      6.4.2 User A in another network
  6.5 Overall SDL
7 SS-CT stage 2 specification for transfer by join
  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
  7.4 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
  7.5 Allocation of functional entities to physical locations
  7.6 Interworking considerations
8 SS-CT stage 2 specification for transfer by rerouteing
  8.1 Functional model
      8.1.1 Functional model description
      8.1.2 Description of functional entities
      8.1.3 Relationship of functional model to Basic Call
             functional model
  8.2 Information flows
      8.2.1 Definition of information flows
      8.2.2 Relationship of information flows to basic call
             information flows
      8.2.3 Examples of information flow sequences
  8.3 Functional Entity actions
      8.3.1 Functional Entity actions of FE1
      8.3.2 Functional Entity actions of FE5
      8.3.3 Functional Entity actions of FE6
      8.3.4 Functional Entity actions of FE7
      8.3.5 Functional Entity actions of FE4
  8.4 Functional Entity behaviour
      8.4.1 Behaviour of FE5
      8.4.2 Behaviour of FE6
      8.4.3 Behaviour of FE7
  8.5 Allocation of functional entities to physical
      locations
Annex A - Bibliography

Defines Supplementary Service Call Transfer (SS-CT) which applies to various basic services supported by Private Integrated Service Networks (PISNs). This service is supplementary, enabling the user to transform two of that user's calls (of which one must be answered) into a new call between the other two users of the two calls.