1、 Standard ECMA-194 4th Edition - December 2001 Standardizing Information and Communication Systems Private Integrated Services Network (PISN) - Inter-Exchange Signalling Protocol - Do Not Disturb and Do Not Disturb Override Supplementary Services Phone: +41 22 849.60.00 - Fax: +41 22 849.60.01 - URL
2、: http:/www.ecma.ch - Internet: helpdeskecma.ch . Standard ECMA-194 4th Edition - December 2001 Standardizing Information and Communication Systems Private Integrated Services Network (PISN) - Inter-Exchange Signalling Protocol - Do Not Disturb and Do Not Disturb Override Supplementary Services (QSI
3、G-DND(O) Phone: +41 22 849.60.00 - Fax: +41 22 849.60.01 - URL: http:/www.ecma.ch - Internet: helpdeskecma.ch IW Ecma-194.doc 14-01-02 09,39 . Brief History This Standard is one of a series of ECMA Standards defining services and signalling protocols applicable to Private Integrated Services Network
4、s (PISNs). The series uses 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 signalling protocol for use at the Q reference point in support of the Do Not Disturb
5、 (DND) and Do Not Disturb Override (DNDO) supplementary services. The protocol defined in this Standard forms part of the PSS1 protocol (informally known as QSIG). This Standard is based upon the practical experience of ECMA member companies and the results of their active and continuous participati
6、on in the work of ISO/IEC JTC1, ITU-T, ETSI and other international and national standardization bodies. It represents a pragmatic and widely based consensus. Compared to the 1st and 2nd Editions of Standard ECMA-194 (published by ECMA in June 1993 and December 1994 respectively), the 3rd Edition in
7、corporated changes in order to achieve complete alignment with International Standard ISO/IEC 14844:1996(E) published by ISO/IEC in September 1996. Compared to the 3rd Edition of Standard ECMA-194 (published by ECMA in June 1997), this 4th Edition incorporates migration to ASN.1 version 1997. Adopte
8、d as 4th Edition of Standard ECMA-194 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 3 4.2.1 Activating PINX 3 4.2.2 Deactivating PINX 3 4.2.3 Inter-PINX link 3 4.
9、2.4 Interrogating PINX 3 4.2.5 Path retention 3 4.2.6 Served User PINX 3 5 Acronyms 3 6 Signalling protocol for the support of SS-DND and SS-DNDO 3 6.1 SS-DND and SS-DNDO description 3 6.2 SS-DND and SS-DNDO operational requirements 4 6.2.1 Provision/withdrawal 4 6.2.2 Requirements on a Terminating
10、PINX 4 6.2.3 Requirements on an Originating PINX 4 6.2.4 Requirements on an Activating PINX 4 6.2.5 Requirements on a Deactivating PINX 4 6.2.6 Requirements on an Interrogating PINX 5 6.2.7 Requirements on a SS-DND Served User PINX 5 6.2.8 Requirements on a Transit PINX 5 6.3 SS-DND and SS-DNDO codi
11、ng requirements 6 6.3.1 Operations 6 6.3.2 Notifications 11 6.3.3 Information elements 11 6.3.4 Messages 11 6.4 SS-DND and SS-DNDO state definitions 12 6.4.1 State at the Terminating PINX 12 6.4.2 States at the Originating PINX 12 6.4.3 States at the Activating PINX 12 6.4.4 States at the Deactivati
12、ng PINX 12 6.4.5 States at the Interrogating PINX 12 6.4.6 State at the SS-DND Served User PINX 12 6.5 SS-DND signalling procedures 13 6.5.1 Actions at the Terminating PINX 13 - ii - 6.5.2 Actions at the Originating PINX 13 6.5.3 Actions at the Activating PINX 13 6.5.4 Actions at the Deactivating PI
13、NX 14 6.5.5 Actions at the Interrogating PINX 15 6.5.6 Actions at the Served User PINX 15 6.5.7 Actions at a Transit PINX 16 6.6 SS-DNDO signalling procedures 16 6.6.1 Actions at the Terminating PINX 16 6.6.2 Actions at the Originating PINX 17 6.6.3 Actions at a Transit PINX 17 6.7 Impact of interwo
14、rking with public ISDNs 18 6.7.1 SS-DND 18 6.7.2 SS-DNDO 18 6.8 Impact of interworking with non-ISDNs 18 6.8.1 SS-DND 18 6.8.2 SS-DNDO 18 6.9 Protocol interactions between SS-DND and other supplementary services and ANFs 18 6.9.1 Interaction between SS-DND and Calling Name Identification Presentatio
15、n (SS-CNIP) 19 6.9.2 Interaction between SS-DND and Connected Name Identification Presentation (SS-CONP) 19 6.9.3 Interaction between SS-DND and Call Completion to Busy Subscriber (SS-CCBS) 19 6.9.4 Interaction between SS-DND and Call Completion on No Reply (SS-CCNR) 19 6.9.5 Interaction between SS-
16、DND and Call Transfer (SS-CT) 19 6.9.6 Interaction between SS-DND and Call Forwarding Unconditional (SS-CFU) 19 6.9.7 Interaction between SS-DND and Call Forwarding Busy (SS-CFB) 19 6.9.8 Interaction between SS-DND and Call Forwarding No Reply (SS-CFNR) 19 6.9.9 Interaction between SS-DND and Path R
17、eplacement (ANF-PR) 19 6.9.10 Interaction between SS-DND and Call Offer (SS-CO) 19 6.9.11 Interaction between SS-DND and Do Not Disturb Override (SS-DNDO) 19 6.9.12 Interaction between SS-DND and Call Intrusion (SS-CI) 20 6.10 Protocol interactions between SS-DNDO and other supplementary services an
18、d ANFs 20 6.10.1 Interaction between SS-DNDO and Calling Name Identification Presentation (SS-CNIP) 20 6.10.2 Interaction between SS-DNDO and Connected Name Identification Presentation (SS-CONP) 20 6.10.3 Interaction between SS-DNDO and Call Completion to Busy Subscriber (SS-CCBS) 20 6.10.4 Interact
19、ion between SS-DNDO and Call Completion on No Reply (SS-CCNR) 20 6.10.5 Interaction between SS-DNDO and Call Transfer (SS-CT) 20 6.10.6 Interaction between SS-DNDO and Call Forwarding Unconditional (SS-CFU) 20 6.10.7 Interaction between SS-DNDO and Call Forwarding Busy (SS-CFB) 21 6.10.8 Interaction
20、 between SS-DNDO and Call Forwarding No Reply (SS-CFNR) 21 6.10.9 Interaction between SS-DNDO and Path Replacement (ANF-PR) 21 6.10.10 Interaction between SS-DNDO and Call Offer (SS-CO) 21 6.10.11 Interaction between SS-DNDO and Do Not Disturb (SS-DND) 21 - iii - 6.10.12 Interaction between SS-DNDO
21、and Call Intrusion (SS-CI) 21 6.11 SS-DND and SS-DNDO parameter values (timers) 21 6.11.1 Timer T1 21 6.11.2 Timer T2 21 6.11.3 Timer T3 21 6.11.4 Timer T4 22 Annex A - Signalling protocol for the support of Path Retention 23 Annex B - Protocol Implementation Conformance Statement (PICS) proforma 33
22、 Annex C - Examples of message sequences 45 Annex D - Specification and Description Language (SDL) representation of procedures 51 Annex E - Imported ASN.1 definitions relating to numbers 59 Annex F - ASN.1 definitions according to ITU-T Recs. X.208 / X.209 61 1 Scope This Standard specifies the sig
23、nalling protocol for the support of the Do Not Disturb and Do Not Disturb Override supplementary services (SS-DND and SS-DNDO) at the Q reference point between Private Integrated services Network eXchanges (PINXs) connected together within a Private Integrated Services Network (PISN). SS-DND is a su
24、pplementary service which enables a served user to cause the PISN to reject any calls, or just those associated with a specified basic service, addressed to the served users PISN number. The calling user is given an indication. Incoming calls are rejected as long as the service is active. The served
25、 users outgoing service is unaffected. SS-DNDO is a supplementary service which enables a served user to override SS-DND at a called number; that is, to allow the call to proceed as if the called user had not activated SS-DND. The Q reference point is defined in ECMA-133. Service specifications are
26、produced in three stages and according to the method specified in ETS 300 387. This Standard contains the stage 3 specification for the Q reference point and satisfies the requirements identified by the stage 1 and stage 2 specifications in ECMA-193. The signalling protocols for SS-DND(O) operate on
27、 top of the signalling protocol for basic circuit switched call control, as specified in ECMA-143, and use certain aspects of the generic procedures for the control of supplementary services specified in ECMA-165. This Standard also specifies additional signalling protocol requirements for the suppo
28、rt of interactions at the Q reference point between SS-DND and other supplementary services and ANFs and between SS-DNDO and other supplementary services and ANFs. NOTE Additional interactions that have no impact on the signalling protocol at the Q reference point can be found in the relevant stage
29、1 specifications. This Standard is applicable to PINXs which can interconnect to form a PISN. 2 Conformance In order to conform to this Standard, a PINX shall satisfy the requirements identified in the Protocol Implementation Conformance Statement (PICS) proforma in annex B. 3 References (normative)
30、 The following standards contain provisions which, through reference in this text, constitute provisions of this Standard. All standards are 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
31、 standards indicated below. In the case of references to ECMA Standards that are aligned with ISO/IEC International Standards, the number of the appropriate ISO/IEC International Standard is given in brackets after the ECMA reference. ECMA-133 Private Integrated Services Network (PISN) - Reference C
32、onfiguration for PISN Exchanges (PINX) (International Standard ISO/IEC 11579-1) ECMA-142 Private Integrated Services Network (PISN) - Circuit-mode 64 kbit/s Bearer Services - Service Description, Functional Capabilities and Information Flows (International Standard ISO/IEC 11574) ECMA-143 Private In
33、tegrated Services Network (PISN) - Circuit-mode Bearer Services - Inter-Exchange Signalling Procedures and Protocol (International Standard ISO/IEC 11572) ECMA-165 Private Integrated Services Network (PISN) - Generic Functional Protocol for the Support of Supplementary Services - Inter-Exchange Sign
34、alling Procedures and Protocol (International Standard ISO/IEC 11582) - 2 - ECMA-174 Private Integrated Services Network (PISN) - Inter-Exchange Signalling Protocol - Call Diversion Supplementary Services (International Standard ISO/IEC 13873) ECMA-186 Private Integrated Services Network (PISN) - In
35、ter-Exchange Signalling Protocol - Call Completion Supplementary Services (International Standard ISO/IEC 13870) ECMA-192 Private Integrated Services Network (PISN) - Inter-Exchange Signalling Protocol - Call Offer Supplementary Service (International Standard ISO/IEC 14843) ECMA-193 Private Integra
36、ted Services Network (PISN) - Specification, Functional Model and Information Flows - Do Not Disturb and Do Not Disturb Override Supplementary Services (International Standard ISO/IEC 14842) ECMA-203 Private Integrated Services Network (PISN) - Inter-Exchange Signalling Protocol - Call Intrusion Sup
37、plementary Service (International Standard ISO/IEC 14846) ETS 300 387 Private Telecommunication Network (PTN); Method for the specification of basic and supplementary services (1994) ITU-T Rec. I.112 Vocabulary of terms for ISDNs (1993) ITU-T Rec. I.210 Principles of telecommunication services suppo
38、rted by an ISDN and the means to describe them (1993) ITU-T Rec. Q.950 Supplementary services protocols, structure and general principles (2000) ITU-T Rec. Z.100 Specification and description language (1999) 4 Definitions For the purposes of this Standard, the following definitions apply. 4.1 Extern
39、al definitions This Standard uses the following terms defined in other documents: Application Protocol Data Unit (APDU) (ECMA-165) Basic Service (ITU-T Rec. I.210) Call, Basic Call (ECMA-165) Coordination Function (ECMA-165) End PINX (ECMA-165) Gateway PINX (ECMA-143) Interpretation APDU (ECMA-165)
40、Network Facility Extension (NFE) (ECMA-165) Originating PINX (ECMA-165) Private Integrated Services Network (PISN) (ECMA-133) Private Integrated services Network eXchange (PINX) (ECMA-133) Rerouteing PINX (ECMA-174) Served user (ECMA-193) Signalling (ITU-T Rec. I.112) Supplementary Service (ITU-T Re
41、c. I.210) Supplementary Services Control Entity (ECMA-165) Terminating PINX (ECMA-165) Transit PINX (ECMA-165) User (ECMA-142) - 3 - 4.2 Other definitions 4.2.1 Activating PINX The PINX serving the activating user. 4.2.2 Deactivating PINX The PINX serving the deactivating user. 4.2.3 Inter-PINX link
42、 The totality of a signalling channel and a number of information channels at the Q reference point. 4.2.4 Interrogating PINX The PINX serving the interrogating user. 4.2.5 Path retention The retaining of the network connection between the Originating PINX and the Terminating PINX so that a suppleme
43、ntary service (such as SS-DNDO) can be invoked without establishing a new connection. 4.2.6 Served User PINX The PINX serving the served user. 5 Acronyms ANF Additional Network Feature APDU Application Protocol Data Unit ASN.1 Abstract Syntax Notation no. 1 DNDOCL DNDO Capability Level DNDPL DND Pro
44、tection Level ISDN Integrated Services Digital Network NFE Network Facility Extension PICS Protocol Implementation Conformance Statement PINX Private Integrated services Network eXchange PISN Private Integrated Services Network SDL Specification and Description Language SS-DND Supplementary Service
45、Do Not Disturb SS-DNDO Supplementary Service Do Not Disturb Override TE Terminal Equipment 6 Signalling protocol for the support of SS-DND and SS-DNDO 6.1 SS-DND and SS-DNDO description SS-DND is a supplementary service which enables a served user to cause the PISN to reject any calls, or just those
46、 associated with a specified basic service, addressed to the served users PISN number. The calling user is given an appropriate indication. Incoming calls are rejected as long as the service is active. The served users outgoing service is unaffected. SS-DNDO is a supplementary service which enables
47、a calling user to override SS-DND at a called user, allowing the call to proceed as if the called user had not activated SS-DND. Both SS-DND and SS-DNDO are applicable to all circuit mode basic services defined in ECMA-142. - 4 - 6.2 SS-DND and SS-DNDO operational requirements 6.2.1 Provision/withdr
48、awal 6.2.1.1 Provision/withdrawal of SS-DND SS-DND is provided or withdrawn after pre-arrangement with the service provider. SS-DND is provided on a per PISN number basis and per basic service basis. For each PISN number, the supplementary service can be subscribed to for every basic service subscri
49、bed to by that PISN number, or for only some of the basic services subscribed to by that PISN number. SS-DND subscription parameters may apply separately to each basic service to which SS-DND is subscribed, or for all the basic services to which SS-DND is subscribed. If SS-DNDO is implemented then the subscription parameter “DND protection level“ (DNDPL) shall be provided. The DNDPL has a value in the range 0 to 3 where 0 means no protection against DNDO and 3 means total protection against DNDO. The values 0 and 3 shall be offered. The values 1
