1、 Standard ECMA-173 3rd Edition - December 2001 Standardizing Information and Communication Systems Private Integrated Services Network (PISN) - Specification, Functional Model and Information Flows - Call Diversion Supplementary Services Phone: +41 22 849.60.00 - Fax: +41 22 849.60.01 - URL: http:/w
2、ww.ecma.ch - Internet: helpdeskecma.ch . Standard ECMA-173 3rd Edition - December 2001 Standardizing Information and Communication Systems Private Integrated Services Network (PISN) - Specification, Functional Model and Information Flows - Call Diversion Supplementary Services (CFSD) Phone: +41 22 8
3、49.60.00 - Fax: +41 22 849.60.01 - URL: http:/www.ecma.ch - Internet: helpdeskecma.ch IW Ecma-173.doc 14-01-02 09,27 . Brief History This Standard is one of a series of ECMA Standards defining services and signalling protocols applicable to Private Integrated Services Networks (PISNs). The series us
4、es ISDN concepts as developed by ITU-T and conforms to the framework of International Standards for Open Systems Interconnection as defined by ISO/IEC. This particular Standard specifies the Call Diversion supplementary services: Call Forwarding Unconditional (SS-CFU) Call Forwarding Busy (SS-CFB) C
5、all Forwarding No Reply (SS-CFNR) Call Deflection (SS-CD) This Standard is based upon the practical experience of ECMA member companies and the results of their active and continuous participation in the work of ISO/IEC JTC1, ITU-T, ETSI and other international and national standardization bodies. I
6、t represents a pragmatic and widely based consensus. Compared to the 1st Edition of Standard ECMA-173 (published by ECMA in June 1992), the 2nd Edition was extended to include the Call Deflection supplementary service (SS-CD) and changes were incorporated in order to achieve alignment with Internati
7、onal Standard ISO/IEC 13872:1995(E) published by ISO/IEC in December 1995. Compared to the 2nd Edition of Standard ECMA-173 (published by ECMA in June 1997), this 3rd Edition incorporates editorial errata and removes all differences with International Standard ISO/IEC 13872:1995. Adopted as 3rd Edit
8、ion of Standard ECMA-173 by the General Assembly of December 2001. - i - Table of contents 1 Scope 1 2 Conformance 1 3 References (normative) 1 4 Definitions 2 4.1 External definitions 2 4.2 Other definitions 2 4.2.1 Additional network feature 2 4.2.2 Busy 2 4.2.3 Call, basic call 3 4.2.4 Connected
9、number 3 4.2.5 Call Deflection 3 4.2.6 Call Deflection from Alert 3 4.2.7 Call Deflection Immediate 3 4.2.8 Diversion 3 4.2.9 Diversion from Alert 3 4.2.10 Diversion Immediate 3 4.2.11 Diverted-to number 3 4.2.12 Diverted-to subaddress 3 4.2.13 Diverted-to user 3 4.2.14 Diverting cause 3 4.2.15 Dive
10、rting number 3 4.2.16 Forwarding 3 4.2.17 Forward switching 3 4.2.18 Last diverting user 3 4.2.19 Original called number 4 4.2.20 Original called user 4 4.2.21 Partial rerouteing 4 4.2.22 Presentation indicator 4 4.2.23 PISN number 4 4.2.24 Private 4 4.2.25 Public 4 4.2.26 Public ISDN 4 4.2.27 Rerou
11、teing 4 4.2.28 Served user 4 4.2.29 Terminal, terminal equipment 4 4.2.30 User A 4 4.2.31 User B 4 4.2.32 User B1, user B2, user B3, etc. 4 4.2.33 User C 5 - ii - 5 Acronyms 5 6 SS-CFU stage 1 specification 6 6.1 Description 6 6.1.1 General description 6 6.1.2 Qualifications on applicability to tele
12、communication services 6 6.2 Procedures 6 6.2.1 Provision/withdrawal 6 6.2.2 Normal procedures 6 6.2.3 Exceptional procedures 10 6.3 Interactions with other supplementary services and ANFs 11 6.3.1 Calling Line Identification Presentation (CLIP) 11 6.3.2 Connected Line Identification Presentation (C
13、OLP) 11 6.3.3 Calling/Connected Line Identification Restriction (CLIR) 11 6.3.4 Calling Name Identification Presentation (CNIP) 11 6.3.5 Connected Name Identification Presentation (CONP) 12 6.3.6 Calling/Connected Name Identification Restriction (CNIR) 12 6.3.7 Completion of Calls to Busy Subscriber
14、 (CCBS) 12 6.3.8 Completion of Calls on No Reply (CCNR) 12 6.3.9 Call Transfer (CT) 12 6.3.10 Call Forwarding Busy (CFB) 12 6.3.11 Call Forwarding No Reply (CFNR) 12 6.3.12 Call Deflection (CD) 12 6.3.13 Path Replacement (PR) 12 6.4 Interworking considerations 12 7 SS-CFB stage 1 specification 13 7.
15、1 Description 13 7.1.1 General description 13 7.1.2 Qualifications on applicability to telecommunication services 13 7.2 Procedures 13 7.2.1 Provision/withdrawal 13 7.2.2 Normal procedures 13 7.2.3 Exceptional procedures 13 7.3 Interactions with other supplementary services and ANFs 13 7.3.1 Calling
16、 Line Identification Presentation (CLIP) 13 7.3.2 Connected Line Identification Presentation (COLP) 13 7.3.3 Calling/Connected Line Identification Restriction (CLIR) 13 7.3.4 Calling Name Identification Presentation (CNIP) 14 7.3.5 Connected Name Identification Presentation (CONP) 14 7.3.6 Calling/C
17、onnected Name Identification Restriction (CNIR) 14 7.3.7 Completion of Calls to Busy Subscriber (CCBS) 14 7.3.8 Completion of Calls on No Reply (CCNR) 14 7.3.9 Call Transfer (CT) 14 7.3.10 Call Forwarding Unconditional (CFU) 14 7.3.11 Call Forwarding No Reply (CFNR) 14 - iii - 7.3.12 Call Deflection
18、 14 7.3.13 Path Replacement (PR) 14 7.4 Interworking Considerations 14 8 SS-CFNR stage 1 specification 15 8.1 Description 15 8.1.1 General description 15 8.1.2 Qualifications on applicability to telecommunication services 15 8.2 Procedures 15 8.2.1 Provision/withdrawal 15 8.2.2 Normal procedures 15
19、8.2.3 Exceptional Procedures 15 8.3 Interactions with other supplementary services and ANFs 16 8.3.1 Calling Line Identification Presentation (CLIP) 16 8.3.2 Connected Line Identification Presentation (COLP) 16 8.3.3 Calling/Connected Line Identification Restriction (CLIR) 16 8.3.4 Calling Name Iden
20、tification Presentation (CNIP) 16 8.3.5 Connected Name Identification Presentation (CONP) 16 8.3.6 Calling/Connected Name Identification Restriction (CNIR) 16 8.3.7 Completion of Calls to Busy Subscriber (CCBS) 16 8.3.8 Completion of Calls on No Reply (CCNR) 16 8.3.9 Call Transfer (CT) 17 8.3.10 Cal
21、l Forwarding Unconditional (CFU) 17 8.3.11 Call Forwarding Busy (CFB) 17 8.3.12 Call Deflection (CD) 17 8.3.13 Path Replacement (PR) 17 8.4 Interworking Considerations 17 9 SS-CD stage 1 specification 18 9.1 Description 18 9.1.1 General description 18 9.1.2 Qualifications on applicability to telecom
22、munication services 18 9.2 Procedures 18 9.2.1 Provision/withdrawal 18 9.2.2 Normal procedures 18 9.2.3 Exceptional Procedures 19 9.3 Interaction with other supplementary services and ANFs 19 9.3.1 Calling Line Identification Presentation (CLIP) 19 9.3.2 Connected Line Identification Presentation (C
23、OLP) 19 9.3.3 Calling/Connected Line Identification Restriction (CLIR) 19 9.3.4 Calling Name Identification Presentation (CNIP) 19 9.3.5 Connected Name Identification Presentation (CONP) 19 9.3.6 Calling/Connected Name Identification Restriction (CNIR) 19 9.3.7 Completion of Calls to Busy Subscriber
24、 (CCBS) 19 9.3.8 Completion of Calls on No Reply (CCNR) 20 9.3.9 Call Transfer (CT) 20 - iv - 9.3.10 Call Forwarding Unconditional (CFU) 20 9.3.11 Call Forwarding on Busy (CFB) 20 9.3.12 Call Forwarding on No Reply (CFNR) 20 9.3.13 Path Replacement (PR) 20 9.4 Interworking considerations 20 9.5 Over
25、all SDL 20 10 SS-DIV stage 2 specification 24 10.1 Functional model 24 10.1.1 Functional model description 24 10.1.2 Description of the functional entities 25 10.1.3 Relationship of functional model to basic call functional model 26 10.2 Information flows 28 10.2.1 Definition of information flows 28
26、 10.2.2 Examples of information flow sequences 37 10.3 Functional entity actions 55 10.3.1 Functional entity actions of FE1 55 10.3.2 Functional entity actions of FE2 55 10.3.3 Functional entity actions of FE3 55 10.3.4 Functional entity actions of FE4 56 10.3.5 Functional entity actions of FE5 56 1
27、0.3.6 Functional entity actions of FE6 57 10.3.7 Functional entity actions of FE7 57 10.3.8 Functional entity actions of FE8 57 10.3.9 Functional entity actions of FE9 57 10.4 Functional entity behaviour 57 10.4.1 Behaviour of FE1 57 10.4.2 Behaviour of FE2 58 10.4.3 Behaviour of FE3 60 10.4.4 Behav
28、iour of FE4 62 10.4.5 Behaviour of FE5 66 10.4.6 Behaviour of FE6 67 10.4.7 Behaviour of FE7 69 10.4.8 Behaviour of FE8 70 10.4.9 Behaviour of FE9 71 10.5 Allocation of functional entities to physical equipment 72 10.6 Interworking considerations 73 Annex A - Bibliography 75 1 Scope This Standard sp
29、ecifies the supplementary services Call Forwarding Unconditional (CFU), Call Forwarding Busy (CFB), Call Forwarding No Reply (CFNR) and Call Deflection (CD), which are applicable to various basic services supported by Private Integrated Services Networks (PISN). Basic services are specified in ECMA-
30、142. SS-CFU, SS-CFB and SS-CFNR are supplementary services which apply during call establishment providing a diversion of an incoming call to an other destination. SS-CD is a supplementary service which allows a served user to respond to an incoming call by requesting redirection of that call to ano
31、ther number specified in the response. Supplementary service specifications are produced in three stages, according to the method described in ETS 300 387. This Standard contains the stage 1 and stage 2 specifications of the Call Diversion supplementary services. The stage 1 specifications (clauses
32、6, 7, 8 and 9) specify the supplementary services as seen by users of PISNs. The stage 2 specification (clause 10) identifies the functional entities involved in the supplementary services and the information flows between them. 2 Conformance In order to conform to this Standard, a stage 3 standard
33、shall specify signalling protocols and equipment behaviour that are capable of being used in a PISN which supports the supplementary services specified in this Standard. This means that, to claim conformance, a stage 3 standard is required to be adequate for the support of those aspects of clauses 6
34、, 7, 8 and 9 (stage 1) and clause 10 (stage 2) which are relevant to the interface or equipment to which the stage 3 standard applies. A stage 3 standard for SS-CFU shall support clauses 6 and 10 respectively. A stage 3 standard for SS-CFB shall support clauses 7 and 10 respectively. A stage 3 stand
35、ard for SS-CFNR shall support clauses 8 and 10 respectively. A stage 3 standard for SS-CD shall support clauses 9 and 10 respectively. 3 References (normative) The following standards contain provisions which, through reference in this text, constitute provisions of this Standard. All standards are
36、subject to revision, and parties to agreements based on this Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. In the case of references to ECMA Standards that are aligned with ISO/IEC International Standards, the number of
37、the appropriate ISO/IEC International Standard is given in brackets after the ECMA reference. ECMA-133 Private Integrated Services Network (PISN) - Reference Configuration for PISN Exchanges (PINX) (International Standard ISO/IEC 11579-1) ECMA-142 Private Integrated Services Network (PISN) - Circuit
38、-mode 64 kbit/s Bearer Services - Service Description, Functional Capabilities and Information Flows (International Standard ISO/IEC 11574) ECMA-148 Private Integrated Services Network (PISN) - Specification, Functional Model and Information Flows - Identification Supplementary Services (Internation
39、al Standard ISO/IEC 14136) ECMA-155 Private Integrated Services Networks - Addressing (International Standard ISO/IEC 11571) ECMA-163 Private Integrated Services Network (PISN) - Specification, Functional Model and Information Flows - Name Identification Supplementary Services (International Standar
40、d ISO/IEC 13864) ETS 300 387 Private Telecommunication Network (PTN); Method for the specification of basic and supplementary services (1994) - 2 - ITU-T Rec. I.112 Vocabulary of terms for ISDNs (1993) ITU-T Rec. I.210 Principles of telecommunication services supported by an ISDN and the means to de
41、scribe them (1993) ITU-T Rec. Z.100 Specification and description language (1999) 4 Definitions For the purposes of this Standard, the following definitions apply. 4.1 External definitions This Standard uses the following terms defined in other documents: Basic Service (ITU-T Rec. I.210) Connection
42、(ITU-T Rec. I.112) Integrated Services Digital Network (ITU-T Rec. I.112) Service (ITU-T Rec. I.112) Signalling (ITU-T Rec. I.112) Supplementary Service (ITU-T Rec. I.210) Private Integrated services Network eXchange (PINX) (ECMA-133) Private Integrated Services Network (PISN) (ECMA-133) User (ECMA-
43、142) This Standard refers to the following basic call functional entities (FEs) defined in ECMA-142: Call Control (CC) Call Control Agent (CCA) This Standard refers to the following basic call inter-FE relationships defined in ECMA-142: r1 r2 r3 This Standard refers to the following basic call infor
44、mation flows defined in ECMA-142: DISCONNECT request/indication REPORT request/indication RELEASE request/indication SETUP request/indication SETUP response/confirmation SETUP REJECT request/indication 4.2 Other definitions 4.2.1 Additional network feature An Additional network feature (ANF) is a ca
45、pability, over and above that of a basic service, provided by a PISN, but not directly to a PISN user. 4.2.2 Busy An ISDN destination is considered to be busy if either a “network determined user busy“ or a “user determined user busy“ condition exists. - 3 - 4.2.3 Call, basic call A call or basic ca
46、ll is an instance of the use of a basic service. 4.2.4 Connected number The number of the user that answers (User C). 4.2.5 Call Deflection Call deflection is the type of diversion invoked by a served users request. 4.2.6 Call Deflection from Alert Call Deflection from Alert (CDA) is the type of div
47、ersion invoked by a served users request during the alerting phase of an incoming call. 4.2.7 Call Deflection Immediate Call Deflection Immediate (CDI) is the type of diversion invoked by a served users request immediately after the receipt of an incoming call. 4.2.8 Diversion Diversion is the redir
48、ection of a call, on behalf of a called user and prior to answer, to a number different from the number of that called user. 4.2.9 Diversion from Alert Diversion from Alert is the type of diversion invoked from an alerting state. NOTE Diversion from Alert can occur as a result of the supplementary s
49、ervices CFNR and CD as specified in this Standard. 4.2.10 Diversion Immediate Diversion Immediate is the type of diversion invoked prior to reaching the alerting state. NOTE Diversion Immediate can occur as a result of the supplementary services CFB, CFU and CD as specified in this Standard. 4.2.11 Diverted-to number The diverted-to number is the number to which a call is diverted. 4.2.12 Diverted-to subaddress The diverted-to subaddress is the subaddress to which a call is diverted. 4.2.13 Diverted-to user The diverted-to user is the us
