BS ISO/IEC 13865:1995

Foreword
Introduction
1 Scope
2 Conformance
3 Normative References
4 Definitions
4.1 External definitions
4.2 Other definitions
5 List of 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
6.2.2.1 Activation/deactivation/registration/
        interrogation
6.2.2.2 Invocation and operation
6.2.3 Exceptional procedures
6.2.3.1 Activation/deactivation,registration/
        interrogation
6.2.3.2 Invocation and operation
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
7.1.2.1 Transfer invoke functional entity, FE1
7.1.2.2 Transfer execute functional entity, FE2
7.1.2.3 Transfer complete receive functional entity, FE3
7.1.2.4 Transfer notification receive functional
        entity FE4
7.1.3 Relationship of functional model to Basic Call
        functionary model
7.2 Informative flows
7.2.1 Definition of information flows
7.2.1.1 Transfer Invoke
7.2.1.2 Transfer Complete
7.2.1.3 Transfer Active
7.2.1.4 Transfer Notify
7.2.1.5 Terminal Details
7.2.1.6 Transfer Update
7.2.2 Relationship of information flows to basic
        call information flows
7.2.3 Examples of information flow sequences
7.2.3.1 Successful Call Transfer (both calls answered)
7.2.3.2 Successful Call Transfer (User C alerting)
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
        re routeing
8.1 Functional model
8.1.1 Functional model description
8.1.2 Description of functional entities
8.1.2.1 Transfer Invoke Functional Entity FE1
8.1.2.2 Transfer Notification Receive Functional
        Entity, FE4
8.1.2.3 Transfer Co-ordinate Functional Entity FE4
8.1.2.4 Transfer Associate Functional Entity FE6
8.1.2.5 Transfer Execute Functional Entity, FE7
8.1.3 Relationship of Functional Model to Basic Call
        Functional Model
8.2 Information flows
8.2.1 Definition of information flows
8.2.1.1 Transfer Invoke
8.2.1.2 Transfer Identity
8.2.1.3 Transfer Abandon
8.2.1.4 Transfer Initiate
8.2.1.5 Transfer Setup
8.2.1.6 Transfer Notify
8.2.1.7 Terminal Details
8.2.2 Relationship of information flows to basic call
        information flows
8.2.3 Examples of information flow sequences
8.2.3.1 Successful Call Transfer (answered)
8.2.3.2 Successful Call Transfer (alerting)
8.2.3.3 Unsuccessful Call Transfer (setup fails)
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

Specifies Supplementary Service Call Transfer (SS-CT), which applies to various basic services supported by Private Integrated Services Networks (PISNs). Contains two stage 2 specifications reflecting different ways of operating the service within the network: transfer by join and transfer by rerouteing.