ISO/IEC 13873:2003
Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Inter-exchange signalling protocol — Call Diversion supplementary services
ISO/IEC 13873:2003 specifies the signalling protocol for the support of Call Diversion supplementary services (SS-DIV) at the Q reference point between Private Integrated services Network eXchanges (PINXs) connected together within a Private Integrated Services Network (PISN). The Call Diversion supplementary services are Call Forwarding Unconditional (SS-CFU), Call Forwarding Busy (SS-CFB), Call Forwarding No Reply (SS-CFNR) and Call Deflection (SS-CD).
SS-CFU, SS-CFB, SS-CFNR and SS-CD are supplementary services which permit a served user to have the PISN send all or specific incoming calls addressed to the served user's PISN number to another number.
The Q reference point is defined in ISO/IEC 11579-1.
Service specifications are produced in three stages and according to the method specified in ETS 300 387. ISO/IEC 13873:2003 contains the stage 3 specification for the Q reference point and satisfies the requirements identified by the stage 1 and stage 2 specifications in ISO/IEC 13872.
The signalling protocol for SS-DIV operates on top of the signalling protocol for basic circuit switched call control, as specified in ISO/IEC 11572 and uses certain aspects of the generic procedures for the control of supplementary services specified in ISO/IEC 11582.
ISO/IEC 13873:2003 also specifies additional signalling protocol requirements for the support of interactions at the Q reference point between SS-DIV and other supplementary services and ANFs.
ISO/IEC 13873:2003 is applicable to PINXs which can be interconnected to form a PISN.
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Foreword
Introduction
1 Scope
2 Conformance
3 Normative references
4 Definitions
4.1 External definitions
4.2 Other definitions
4.2.1 Activating PINX
4.2.2 Busy
4.2.3 Connected number
4.2.4 Deactivating PINX
4.2.5 Diversion
4.2.6 Diverted-to number
4.2.7 Diverted-to PINX
4.2.8 Diverted-to user
4.2.9 Diverting cause
4.2.10 Diverting number
4.2.11 Forwarding
4.2.12 Forward switching
4.2.13 Interrogating PINX
4.2.14 Last diverting user
4.2.15 Original called number
4.2.16 Original called user
4.2.17 Partial rerouteing
4.2.18 Presentation indicator
4.2.19 Rerouteing
4.2.20 Rerouteing PINX
4.2.21 Served user
4.2.22 User A
4.2.23 User B
4.2.24 User B1, user B2, user B3, etc.
4.2.25 User C
5 Acronyms
6 Signalling protocol for the support of SS-DIV
6.1 SS-DIV description
6.2 SS-DIV operational requirements
6.2.1 Provision/withdrawal
6.2.2 Requirements on the Originating PINX
6.2.3 Requirements on the Served User PINX
6.2.4 Requirements on the Diverted-to PINX
6.2.5 Requirements on the Rerouteing PINX
6.2.6 Requirements on a Transit PINX
6.2.7 Requirements on the Activating PINX
6.2.8 Requirements on the Deactivating PINX
6.2.9 Requirements on the Interrogating PINX
6.3 SS-DIV coding requirements
6.3.1 Operations
6.3.2 Information elements
6.3.2.1 Facility information element
6.3.2.2 Notification indicator information element
6.3.3 Messages
6.4 SS-DIV state definitions
6.4.1 States at the Originating PINX
6.4.2 States at the Served User PINX
6.4.3 States at the Diverted-to PINX
6.4.4 States at the Rerouteing PINX
6.4.5 States at the Activating PINX
6.4.6 States at the Deactivating PINX
6.4.7 States at the Interrogating PINX
6.5 SS-DIV Signalling procedures
6.5.1 Actions at the Originating PINX
6.5.1.1 Normal Procedure
6.5.1.2 Exceptional Procedures
6.5.2 Actions at a Transit PINX
6.5.3 Actions at the Served User PINX
6.5.3.1 Normal Procedure
6.5.3.1.1 Activation
6.5.3.1.2 Deactivation
6.5.3.1.3 Interrogation
6.5.3.1.4 Verification of the diverted-to user's number
6.5.3.1.5 Invocation
6.5.3.2 Exceptional Procedures
6.5.3.2.1 Activation
6.5.3.2.2 Deactivation
6.5.3.2.3 Interrogation
6.5.3.2.4 Verification of the diverted-to user's number
6.5.3.2.5 Invocation
6.5.4 Actions at the Rerouteing PINX
6.5.4.1 Normal Procedure
6.5.4.2 Exceptional Procedures
6.5.5 Actions at the Diverted-to PINX
6.5.5.1 Normal Procedure
6.5.5.1.1 Invocation
6.5.5.1.2 Verification of the diverted-to user's number
6.5.5.2 Exceptional Procedures
6.5.5.2.1 Invocation
6.5.5.2.2 Verification of the diverted-to user's number
6.5.6 Actions at the Activating PINX
6.5.6.1 Normal Procedure
6.5.6.2 Exceptional Procedures
6.5.7 Actions at the Deactivating PINX
6.5.7.1 Normal Procedure
6.5.7.2 Exceptional Procedures
6.5.8 Actions at the Interrogating PINX
6.5.8.1 Normal Procedure
6.5.8.2 Exceptional Procedures
6.6 SS-DIV Impact of interworking with public ISDNs
6.6.1 Impact of interworking on incoming calls
6.6.1.1 Diversion within the PISN
6.6.1.2 Diversion within the public ISDN
6.6.1.3 Partial rerouteing
6.6.2 Impact of interworking on outgoing calls
6.6.2.1 Diversion within the PISN
6.6.2.2 Diversion within the public ISDN
6.7 SS-DIV Impact of interworking with non-ISDNs
6.7.1 Impact of interworking on incoming calls
6.7.2 Impact of interworking on outgoing calls
6.8 Protocol interactions between SS-DIV and other SSs and ANFs
6.8.1 Protocol interactions of Call Forwarding Unconditional (SS-CFU)
6.8.1.1 Interaction with Calling Name Identification Presentation (SS-CNIP)
6.8.1.2 Interaction with Connected Name Identification Presentation (SS-CONP)
6.8.1.3 Interaction with Completion of Call to Busy Subscriber (SS-CCBS)
6.8.1.3.1 Originating PINX procedures for invoking CCBS at a CFU diverted-to user
6.8.1.3.2 Originating PINX procedures if CFU is activated by SS-CCBS User A
6.8.1.3.3 Terminating PINX procedures if CFU is activated by User B after CCBS has been invoked
6.8.1.4 Interaction with Completion of Calls on No Reply (SS-CCNR)
6.8.1.4.1 Originating PINX procedures for invoking CCNR at a CFU diverted-to user
6.8.1.4.2 Originating PINX procedures if CFU is activated by SS-CCNR User A
6.8.1.4.3 Terminating PINX procedures if CFU is activated by User B after CCNR has been invoked
6.8.1.5 Interaction with Call Transfer (SS-CT)
6.8.1.5.1 Actions at a Transferring PINX for join
6.8.1.6 Interaction with Call Forwarding Busy (SS-CFB)
6.8.1.7 Interaction with Call Forwarding No Reply (SS-CFNR)
6.8.1.8 Interaction with Call Deflection (SS-CD)
6.8.1.9 Interaction with Path Replacement (ANF-PR)
6.8.2 Protocol interactions of Call Forwarding Busy (SS-CFB)
6.8.2.1 Interaction with Calling Name Identification Presentation (SS-CNIP)
6.8.2.2 Interaction with Connected Name Identification Presentation (SS-CONP)
6.8.2.3 Interaction with Completion of Calls to Busy Subscriber (SS-CCBS)
6.8.2.3.1 Originating PINX procedures for invoking CCBS at a CFB diverted-to user
6.8.2.3.2 Originating PINX procedures if CFB is activated by SS-CCBS User A
6.8.2.3.3 Terminating PINX procedures if CFB is activated by User B after CCBS has been invoked
6.8.2.4 Interaction with Completion of Calls on No Reply (SS-CCNR)
6.8.2.4.1 Originating PINX procedures for invoking CCNR at a CFB diverted-to user
6.8.2.4.2 Originating PINX procedures if CFB is activated by SS-CCNR User A
6.8.2.4.3 Terminating PINX procedures if CFB is activated by User B after CCNR has been invoked
6.8.2.5 Interaction with Call Transfer (SS-CT)
6.8.2.5.1 Actions at a Transferring PINX for join
6.8.2.6 Interaction with Call Forwarding Unconditional (SS-CFU)
6.8.2.7 Interaction with Call Forwarding No Reply (SS-CFNR)
6.8.2.8 Interaction with Call Deflection (SS-CD)
6.8.2.9 Interaction with Path Replacement (ANF-PR)
6.8.3 Protocol interactions of Call Forwarding No Reply (SS-CFNR)
6.8.3.1 Interaction with Calling Name Identification Presentation (SS-CNIP)
6.8.3.2 Interaction with Connected Name Identification Presentation (SS-CONP)
6.8.3.3 Interaction with Completion of Calls to Busy Subscriber (SS-CCBS)
6.8.3.4 Interaction with Completion of Calls on No Reply (SS-CCNR)
6.8.3.4.1 Originating PINX procedures for invoking CCNR at a CFNR diverted-to user
6.8.3.4.2 Originating PINX procedures if CFNR is activated by SS-CCNR User A
6.8.3.4.3 Terminating PINX procedures if CFNR is activated by User B after CCNR has been invoked
6.8.3.5 Interaction with Call Transfer (SS-CT)
6.8.3.5.1 Actions at a Transferring PINX for rerouteing and SS-CFNR Originating PINX
6.8.3.5.2 Actions at a Transferring PINX for join or rerouteing and SS-CFNR Originating PINX
6.8.3.5.3 Actions at a Secondary PINX for rerouteing and SS-CFNR Served User PINX
6.8.3.5.4 Actions at a Secondary PINX for rerouteing and SS-CFNR Served User and Rerouteing PINX
6.8.3.5.5 Actions at a Secondary PINX for join and SS-CFNR Served User and Rerouteing PINX
6.8.3.5.6 Actions at a Transferring PINX for join
6.8.3.5.7 Actions at a Primary PINX for join
6.8.3.6 Interaction with Call Forwarding Unconditional (SS-CFU)
6.8.3.7 Interaction with Call Forwarding Busy (SS-CFB)
6.8.3.8 Interaction with Call Deflection (SS-CD)
6.8.3.9 Interaction with Path Replacement (ANF-PR)
6.8.4 Protocol interactions of Call Deflection (SS-CD)
6.9 SS-DIV parameter values (timers)
6.9.1 Timer T1
6.9.2 Timer T2
6.9.3 Timer T3
6.9.4 Timer T4
6.9.5 Timer T5
Annex A(normative)Protocol Implementation Conformance Statement (PICS) proforma
A.1 Introduction
A.2 Instructions for completing the PICS proforma
A.2.1 General structure of the PICS proforma
A.2.2 Additional Information
A.2.3 Exception Information
A.3 PICS proforma for ISO/IEC 13873
A.3.1 Implementation Identification
A.3.2 Protocol Summary
A.3.3 General
A.3.4 Procedures
A.3.5 Coding
A.3.6 Timers
A.3.7 Interactions between SS-CFU/SSCDI and SS-CCBS
A.3.8 Interactions between SS-CFU/SSCDI and SS-CCNR
A.3.9 Interactions between SSCFB and SS-CCBS
A.3.10 Interactions between SS-CFB and SS-CCNR
A.3.11 Interactions between SS-CFNR/SSCDA and SS-CCNR
A.3.12 Interactions between SS-CFNR and SS-CT
A.3.13 Interactions between SS-CFU/SS-CDI and SS-CT
A.3.14 Interactions between SS-CFB and SS-CT
Annex B(informative)Imported ASN.1 definitions
Annex C(informative)Specification and Description Language (SDL) representation of procedures
C.1 SDL Representation of SS-DIV at the Originating PINX
C.2 SDL Representation of SS-DIV at the Rerouteing PINX
C.3 SDL Representation of SS-DIV at the Served User PINX
C.4 SDL Representation of SS-DIV at the Diverted-to PINX
C.5 SDL Representation of SS-DIV at the Activating PINX
C.6 SDL Representation of SS-DIV at the Deactivating PINX
C.7 SDL Representation of SS-DIV at the Interrogating PINX
Annex D(informative)Examples of message sequences
D.1 Example message sequences in case of rerouteing
D.1.1 Example message sequences for SS-CFU/SS-CFB invocation
D.1.2 Message sequences for SS-CFNR(CDA) invocation
D.2 Example message sequences in case of forward switching
D.2.1 Example message sequences for SS-CFU/SS-CFB invocation
D.2.2 Example message sequences for SS-CFNR(CDA) invocation
D.3 Example message sequences for activation, deactivation and interrogation
Annex E(informative)Bibliography
Annex F(normative)ASN.1 definitions according to ITU-T Recs. X.208 / X.209
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Foreword
Introduction
1 Scope
2 Conformance
3 Normative references
4 Definitions
4.1 External definitions
4.2 Other definitions
4.2.1 Activating PINX
4.2.2 Busy
4.2.3 Connected number
4.2.4 Deactivating PINX
4.2.5 Diversion
4.2.6 Diverted-to number
4.2.7 Diverted-to PINX
4.2.8 Diverted-to user
4.2.9 Diverting cause
4.2.10 Diverting number
4.2.11 Forwarding
4.2.12 Forward switching
4.2.13 Interrogating PINX
4.2.14 Last diverting user
4.2.15 Original called number
4.2.16 Original called user
4.2.17 Partial rerouteing
4.2.18 Presentation indicator
4.2.19 Rerouteing
4.2.20 Rerouteing PINX
4.2.21 Served user
4.2.22 User A
4.2.23 User B
4.2.24 User B1, user B2, user B3, etc.
4.2.25 User C
5 Acronyms
6 Signalling protocol for the support of SS-DIV
6.1 SS-DIV description
6.2 SS-DIV operational requirements
6.2.1 Provision/withdrawal
6.2.2 Requirements on the Originating PINX
6.2.3 Requirements on the Served User PINX
6.2.4 Requirements on the Diverted-to PINX
6.2.5 Requirements on the Rerouteing PINX
6.2.6 Requirements on a Transit PINX
6.2.7 Requirements on the Activating PINX
6.2.8 Requirements on the Deactivating PINX
6.2.9 Requirements on the Interrogating PINX
6.3 SS-DIV coding requirements
6.3.1 Operations
6.3.2 Information elements
6.3.2.1 Facility information element
6.3.2.2 Notification indicator information element
6.3.3 Messages
6.4 SS-DIV state definitions
6.4.1 States at the Originating PINX
6.4.2 States at the Served User PINX
6.4.3 States at the Diverted-to PINX
6.4.4 States at the Rerouteing PINX
6.4.5 States at the Activating PINX
6.4.6 States at the Deactivating PINX
6.4.7 States at the Interrogating PINX
6.5 SS-DIV Signalling procedures
6.5.1 Actions at the Originating PINX
6.5.1.1 Normal Procedure
6.5.1.2 Exceptional Procedures
6.5.2 Actions at a Transit PINX
6.5.3 Actions at the Served User PINX
6.5.3.1 Normal Procedure
6.5.3.1.1 Activation
6.5.3.1.2 Deactivation
6.5.3.1.3 Interrogation
6.5.3.1.4 Verification of the diverted-to user's number
6.5.3.1.5 Invocation
6.5.3.2 Exceptional Procedures
6.5.3.2.1 Activation
6.5.3.2.2 Deactivation
6.5.3.2.3 Interrogation
6.5.3.2.4 Verification of the diverted-to user's number
6.5.3.2.5 Invocation
6.5.4 Actions at the Rerouteing PINX
6.5.4.1 Normal Procedure
6.5.4.2 Exceptional Procedures
6.5.5 Actions at the Diverted-to PINX
6.5.5.1 Normal Procedure
6.5.5.1.1 Invocation
6.5.5.1.2 Verification of the diverted-to user's number
6.5.5.2 Exceptional Procedures
6.5.5.2.1 Invocation
6.5.5.2.2 Verification of the diverted-to user's number
6.5.6 Actions at the Activating PINX
6.5.6.1 Normal Procedure
6.5.6.2 Exceptional Procedures
6.5.7 Actions at the Deactivating PINX
6.5.7.1 Normal Procedure
6.5.7.2 Exceptional Procedures
6.5.8 Actions at the Interrogating PINX
6.5.8.1 Normal Procedure
6.5.8.2 Exceptional Procedures
6.6 SS-DIV Impact of interworking with public ISDNs
6.6.1 Impact of interworking on incoming calls
6.6.1.1 Diversion within the PISN
6.6.1.2 Diversion within the public ISDN
6.6.1.3 Partial rerouteing
6.6.2 Impact of interworking on outgoing calls
6.6.2.1 Diversion within the PISN
6.6.2.2 Diversion within the public ISDN
6.7 SS-DIV Impact of interworking with non-ISDNs
6.7.1 Impact of interworking on incoming calls
6.7.2 Impact of interworking on outgoing calls
6.8 Protocol interactions between SS-DIV and other SSs and ANFs
6.8.1 Protocol interactions of Call Forwarding Unconditional (SS-CFU)
6.8.1.1 Interaction with Calling Name Identification Presentation (SS-CNIP)
6.8.1.2 Interaction with Connected Name Identification Presentation (SS-CONP)
6.8.1.3 Interaction with Completion of Call to Busy Subscriber (SS-CCBS)
6.8.1.3.1 Originating PINX procedures for invoking CCBS at a CFU diverted-to user
6.8.1.3.2 Originating PINX procedures if CFU is activated by SS-CCBS User A
6.8.1.3.3 Terminating PINX procedures if CFU is activated by User B after CCBS has been invoked
6.8.1.4 Interaction with Completion of Calls on No Reply (SS-CCNR)
6.8.1.4.1 Originating PINX procedures for invoking CCNR at a CFU diverted-to user
6.8.1.4.2 Originating PINX procedures if CFU is activated by SS-CCNR User A
6.8.1.4.3 Terminating PINX procedures if CFU is activated by User B after CCNR has been invoked
6.8.1.5 Interaction with Call Transfer (SS-CT)
6.8.1.5.1 Actions at a Transferring PINX for join
6.8.1.6 Interaction with Call Forwarding Busy (SS-CFB)
6.8.1.7 Interaction with Call Forwarding No Reply (SS-CFNR)
6.8.1.8 Interaction with Call Deflection (SS-CD)
6.8.1.9 Interaction with Path Replacement (ANF-PR)
6.8.2 Protocol interactions of Call Forwarding Busy (SS-CFB)
6.8.2.1 Interaction with Calling Name Identification Presentation (SS-CNIP)
6.8.2.2 Interaction with Connected Name Identification Presentation (SS-CONP)
6.8.2.3 Interaction with Completion of Calls to Busy Subscriber (SS-CCBS)
6.8.2.3.1 Originating PINX procedures for invoking CCBS at a CFB diverted-to user
6.8.2.3.2 Originating PINX procedures if CFB is activated by SS-CCBS User A
6.8.2.3.3 Terminating PINX procedures if CFB is activated by User B after CCBS has been invoked
6.8.2.4 Interaction with Completion of Calls on No Reply (SS-CCNR)
6.8.2.4.1 Originating PINX procedures for invoking CCNR at a CFB diverted-to user
6.8.2.4.2 Originating PINX procedures if CFB is activated by SS-CCNR User A
6.8.2.4.3 Terminating PINX procedures if CFB is activated by User B after CCNR has been invoked
6.8.2.5 Interaction with Call Transfer (SS-CT)
6.8.2.5.1 Actions at a Transferring PINX for join
6.8.2.6 Interaction with Call Forwarding Unconditional (SS-CFU)
6.8.2.7 Interaction with Call Forwarding No Reply (SS-CFNR)
6.8.2.8 Interaction with Call Deflection (SS-CD)
6.8.2.9 Interaction with Path Replacement (ANF-PR)
6.8.3 Protocol interactions of Call Forwarding No Reply (SS-CFNR)
6.8.3.1 Interaction with Calling Name Identification Presentation (SS-CNIP)
6.8.3.2 Interaction with Connected Name Identification Presentation (SS-CONP)
6.8.3.3 Interaction with Completion of Calls to Busy Subscriber (SS-CCBS)
6.8.3.4 Interaction with Completion of Calls on No Reply (SS-CCNR)
6.8.3.4.1 Originating PINX procedures for invoking CCNR at a CFNR diverted-to user
6.8.3.4.2 Originating PINX procedures if CFNR is activated by SS-CCNR User A
6.8.3.4.3 Terminating PINX procedures if CFNR is activated by User B after CCNR has been invoked
6.8.3.5 Interaction with Call Transfer (SS-CT)
6.8.3.5.1 Actions at a Transferring PINX for rerouteing and SS-CFNR Originating PINX
6.8.3.5.2 Actions at a Transferring PINX for join or rerouteing and SS-CFNR Originating PINX
6.8.3.5.3 Actions at a Secondary PINX for rerouteing and SS-CFNR Served User PINX
6.8.3.5.4 Actions at a Secondary PINX for rerouteing and SS-CFNR Served User and Rerouteing PINX
6.8.3.5.5 Actions at a Secondary PINX for join and SS-CFNR Served User and Rerouteing PINX
6.8.3.5.6 Actions at a Transferring PINX for join
6.8.3.5.7 Actions at a Primary PINX for join
6.8.3.6 Interaction with Call Forwarding Unconditional (SS-CFU)
6.8.3.7 Interaction with Call Forwarding Busy (SS-CFB)
6.8.3.8 Interaction with Call Deflection (SS-CD)
6.8.3.9 Interaction with Path Replacement (ANF-PR)
6.8.4 Protocol interactions of Call Deflection (SS-CD)
6.9 SS-DIV parameter values (timers)
6.9.1 Timer T1
6.9.2 Timer T2
6.9.3 Timer T3
6.9.4 Timer T4
6.9.5 Timer T5
Annex A(normative)Protocol Implementation Conformance Statement (PICS) proforma
A.1 Introduction
A.2 Instructions for completing the PICS proforma
A.2.1 General structure of the PICS proforma
A.2.2 Additional Information
A.2.3 Exception Information
A.3 PICS proforma for ISO/IEC 13873
A.3.1 Implementation Identification
A.3.2 Protocol Summary
A.3.3 General
A.3.4 Procedures
A.3.5 Coding
A.3.6 Timers
A.3.7 Interactions between SS-CFU/SSCDI and SS-CCBS
A.3.8 Interactions between SS-CFU/SSCDI and SS-CCNR
A.3.9 Interactions between SSCFB and SS-CCBS
A.3.10 Interactions between SS-CFB and SS-CCNR
A.3.11 Interactions between SS-CFNR/SSCDA and SS-CCNR
A.3.12 Interactions between SS-CFNR and SS-CT
A.3.13 Interactions between SS-CFU/SS-CDI and SS-CT
A.3.14 Interactions between SS-CFB and SS-CT
Annex B(informative)Imported ASN.1 definitions
Annex C(informative)Specification and Description Language (SDL) representation of procedures
C.1 SDL Representation of SS-DIV at the Originating PINX
C.2 SDL Representation of SS-DIV at the Rerouteing PINX
C.3 SDL Representation of SS-DIV at the Served User PINX
C.4 SDL Representation of SS-DIV at the Diverted-to PINX
C.5 SDL Representation of SS-DIV at the Activating PINX
C.6 SDL Representation of SS-DIV at the Deactivating PINX
C.7 SDL Representation of SS-DIV at the Interrogating PINX
Annex D(informative)Examples of message sequences
D.1 Example message sequences in case of rerouteing
D.1.1 Example message sequences for SS-CFU/SS-CFB invocation
D.1.2 Message sequences for SS-CFNR(CDA) invocation
D.2 Example message sequences in case of forward switching
D.2.1 Example message sequences for SS-CFU/SS-CFB invocation
D.2.2 Example message sequences for SS-CFNR(CDA) invocation
D.3 Example message sequences for activation, deactivation and interrogation
Annex E(informative)Bibliography
Annex F(normative)ASN.1 definitions according to ITU-T Recs. X.208 / X.209