1、 Standard ECMA-241 4th Edition - February 2002 Standardizing Information and Communication Systems Private Integrated Services Network (PISN) - Specification, Functional Model and Information Flows - Message Waiting Indication Supplementary Service Phone: +41 22 849.60.00 - Fax: +41 22 849.60.01 - U
2、RL: http:/www.ecma.ch - Internet: helpdeskecma.ch . Standard ECMA-241 4th Edition - February 2002 Standardizing Information and Communication Systems Private Integrated Services Network (PISN) - Specification, Functional Model and Information Flows - Message Waiting Indication Supplementary Service
3、(MWISD) Phone: +41 22 849.60.00 - Fax: +41 22 849.60.01 - URL: http:/www.ecma.ch - Internet: helpdeskecma.ch IW Ecma-241.doc 07-02-02 14,46 . Brief History This Standard is one of a series of ECMA Standards defining services and signalling protocols applicable to Private Integrated Services Networks
4、 (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 Message Waiting Indication supplementary service. This Standard is based upon the prac
5、tical 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. It represents a pragmatic and widely based consensus. Compared to the 2nd Edition of Standard E
6、CMA-241 (published by ECMA in September 1997), the 3rd Edition incorporated changes to allow indication of multimedia messages. Adopted as 4th Edition of Standard ECMA-241 by the General Assembly in February 2002. . - i - Table of contents 1 Scope 1 2 Conformance 1 3 References (normative) 1 4 Defin
7、itions 1 4.1 External definitions 1 4.2 Other definitions 2 4.2.1 Served User 2 4.2.2 Message Centre 2 4.2.3 Message Waiting Indication 2 5 List of acronyms 2 6 SS-MWI stage 1 specification 2 6.1 Description 2 6.1.1 General description 2 6.1.2 Qualifications on applicability to telecommunication ser
8、vices 2 6.2 Procedures 3 6.2.1 Provision / withdrawal 3 6.2.2 Normal procedures 3 6.2.3 Exceptional procedures 3 6.3 Interactions with other Supplementary Services / Additional Network Features 3 6.3.1 Advice of Charge (AOC) 3 6.3.2 Call Deflection (CD) 4 6.3.3 Call Forwarding Unconditional (CFU) 4
9、6.3.4 Call Forwarding Busy (CFB) 4 6.3.5 Call Forwarding No Reply (CFNR) 4 6.3.6 Call Interception (CINT) 4 6.3.7 Call Intrusion (CI) 4 6.3.8 Call Offer (CO) 4 6.3.9 Call Transfer (CT) 4 6.3.10 Calling/Connected Line Identification Restriction (CLIR) 4 6.3.11 Calling/Connected Name Identification Re
10、striction (CNIR) 4 6.3.12 Calling Line Identification Presentation (CLIP) 4 6.3.13 Calling Name Identification Presentation (CNIP) 4 6.3.14 Connected Line Identification Presentation (COLP) 4 6.3.15 Connected Name Identification Presentation (CONP) 4 6.3.16 Completion of Calls to Busy Subscribers (C
11、CBS) 4 6.3.17 Completion of Calls on No Reply (CCNR) 4 6.3.18 Do Not Disturb (DND) 4 6.3.19 Do Not Disturb Override (DNDO) 4 6.3.20 Path Replacement (PR) 4 6.3.21 Recall (RE) 4 - ii - 6.3.22 Route Restriction Class (RRC) 4 6.3.23 Wireless Terminal Location Registration (WTLR) 5 6.3.24 Wireless Termi
12、nal Mobility Incoming Call (WTMI) 5 6.3.25 Wireless Terminal Mobility Outgoing Call (WTMO) 5 6.3.26 Authentication of a WTM user (WTAT) 5 6.3.27 Authentication of the PISN (WTAN) 5 6.4 Interworking considerations 5 6.5 Overall SDL 5 7 SS-MWI stage 2 specification 9 7.1 Functional model 9 7.1.1 Funct
13、ional model description 9 7.1.2 Description of Functional Entities 9 7.1.3 Relationship of functional model to Basic Call functional model 9 7.2 Information flows 9 7.2.1 Definition of information flows 9 7.2.2 Relationship of information flows to Basic Call information flows 12 7.2.3 Information fl
14、ow sequences 13 7.3 Functional Entity actions 15 7.3.1 Functional Entity actions of FE1 15 7.3.2 Functional Entity actions of FE2 15 7.4 Functional Entity behaviour 16 7.4.1 Behaviour of FE1 16 7.4.2 Behaviour of FE2 17 7.5 Allocation of Functional Entities to physical equipment 18 7.6 Interworking
15、considerations 18 1 Scope This Standard specifies supplementary service Message Waiting Indication (SS-MWI), which is related, but not limited, to various basic services supported by Private Integrated Services Networks (PISNs). Basic services are specified in ECMA-142. This supplementary service MW
16、I enables a Served User to be sent a Message Waiting Indication and also enables this Message Waiting Indication to be cancelled. 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 SS
17、-MWI. The stage 1 specification (clause 6) specifies the supplementary service as seen by users of PISNs. The stage 2 specification (clause 7) specifies the functional entities involved in the supplementary service and the information flows between them. 2 Conformance In order to conform to this Sta
18、ndard, a stage 3 standard shall specify signalling protocols and equipment behaviour that are capable of being used in a PISN which supports the supplementary service specified in this Standard. This means that, to claim conformance, a stage 3 standard is required to be adequate for the support of t
19、hose aspects of clause 6 (stage 1) and clause 7 (stage 2) which are relevant to the interface or equipment to which the stage 3 standard applies. 3 References (normative) The following standards contain provisions which, through reference in this text, constitute provisions of this Standard. All sta
20、ndards 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 standards indicated below. In the case of references to ECMA Standards that are aligned with ISO/IEC International Standards, the
21、 number of 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
22、) - Circuit Mode 64kbit/s Bearer Services - Service Description, Functional Capabilities and Information Flows (International Standard ISO/IEC 11574) ETS 300 387 Private Telecommunication Network (PTN); Method for the specification of basic and supplementary services (1994) ITU-T Rec. I.112 Vocabula
23、ry of terms for ISDNs (1993) ITU-T Rec. I.210 Principles of telecommunication services supported by an ISDN and the means to describe 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 Exter
24、nal definitions This Standard uses the following terms defined in other documents: Basic Service (ITU-T Rec. I.210) Private Integrated services Network eXchange (PINX) (ECMA-133) Private Integrated Services Network (PISN) (ECMA-133) Service (ITU-T Rec. I.112) - 2 - Signalling (ITU-T Rec. I.112) Supp
25、lementary Service (ITU-T Rec. I.210) User (ECMA-142) 4.2 Other definitions 4.2.1 Served User The user to whom the Message Waiting Indication is sent on initiative of the Message Centre. 4.2.2 Message Centre The entity which activates or deactivates the Message Waiting Indication as a result of the s
26、torage or retrieval of messages. 4.2.3 Message Waiting Indication An indication to the Served User when messages are waiting for the Served User. NOTE The indication may be a lamp, special tone, display etc. This is outside the scope of this Standard. 5 List of acronyms ANF Additional Network Featur
27、e FE Functional Entity ISDN Integrated Services Digital Network MWI Message Waiting Indication PINX Private Integrated services Network eXchange PISN Private Integrated Services Network SDL Specification and Description Language SS Supplementary Service 6 SS-MWI stage 1 specification 6.1 Description
28、 6.1.1 General description The supplementary service MWI enables a Served User to be sent a Message Waiting Indication and also enables this Message Waiting Indication to be cancelled. NOTE The Message Waiting Indication is sent on activation by the Message Centre. NOTE The Message Waiting Indicatio
29、n is cancelled on deactivation by the Message Centre. A Served User can receive separate MWIs for each of the services for which there is a message waiting. NOTE A service for which there is a message waiting would normally use the related basic service to retrieve that message. 6.1.2 Qualifications
30、 on applicability to telecommunication services This supplementary service does not apply directly to any basic telecommunication service. However, a MWI relates to a basic service for which there are messages waiting. - 3 - 6.2 Procedures 6.2.1 Provision / withdrawal SS-MWI may be provided or withd
31、rawn after pre-arrangement with the service provider or may be generally available to all users. 6.2.2 Normal procedures 6.2.2.1 Activation, deactivation and interrogation The PISN shall provide activation / deactivation by the Message Centre. In addition, the PISN may provide interrogation by the S
32、erved User. To activate SS-MWI, the Message Centre shall supply the PISN number and the service for which there is a message waiting and may, as an implementation option, add any combination of the following pieces of information: the identity of the Message Centre; the number of messages waiting fo
33、r the Served User for that service; the address of the user that left a message; the time when a message was left; the priority of the highest priority message waiting for that service. After activation, SS-MWI may be activated again whenever the number of waiting messages changes. To deactivate SS-
34、MWI, the Message Centre shall supply the PISN number and the service for which there is no longer a message waiting. As a result of activation, a MWI shall be sent to the Served User. The MWI may include information on messages waiting, if provided by the Message Centre. As a result of deactivation,
35、 the MWI at the Served User, for the service concerned, shall be cancelled. When the Message Centre activates or deactivates SS-MWI at the Served User, it shall be provided with an indication of acceptance. When the Served User interrogates SS-MWI for a particular service, the Message Centre shall p
36、rovide the Served User with an indication of whether SS-MWI is activated for that service and may add, as an implementation option, any of the following information: the identity of the Message Centre; the number of messages waiting; the address of the user that left a message; the time when a messa
37、ge was left; the priority of the highest priority message waiting. When the Served User interrogates SS-MWI for all services, the Message Centre shall provide the Served User with a list of services for which SS-MWI is active and, as an implementation option, for each service, any of the additional
38、information listed above. 6.2.2.2 Invocation and operation Not applicable. 6.2.3 Exceptional procedures 6.2.3.1 Activation, deactivation and interrogation If the Served User cannot accept activation or deactivation, then the Message Centre shall be informed and may also be given the reason. If the P
39、ISN cannot accept interrogation, then the Served User shall be informed and may also be given a reason. 6.2.3.2 Invocation and operation None. 6.3 Interactions with other Supplementary Services / Additional Network Features Interactions with other supplementary services and ANFs for which PISN stand
40、ards were available at the time of publication of this Standard are specified below. 6.3.1 Advice of Charge (AOC) No interaction. - 4 - 6.3.2 Call Deflection (CD) No interaction. 6.3.3 Call Forwarding Unconditional (CFU) No interaction. 6.3.4 Call Forwarding Busy (CFB) No interaction. 6.3.5 Call For
41、warding No Reply (CFNR) No interaction. 6.3.6 Call Interception (CINT) No interaction. 6.3.7 Call Intrusion (CI) No interaction. 6.3.8 Call Offer (CO) No interaction. 6.3.9 Call Transfer (CT) No interaction. 6.3.10 Calling/Connected Line Identification Restriction (CLIR) No interaction. 6.3.11 Calli
42、ng/Connected Name Identification Restriction (CNIR) No interaction. 6.3.12 Calling Line Identification Presentation (CLIP) No interaction. 6.3.13 Calling Name Identification Presentation (CNIP) No interaction. 6.3.14 Connected Line Identification Presentation (COLP) No interaction. 6.3.15 Connected
43、Name Identification Presentation (CONP) No interaction. 6.3.16 Completion of Calls to Busy Subscribers (CCBS) No interaction. 6.3.17 Completion of Calls on No Reply (CCNR) No interaction. 6.3.18 Do Not Disturb (DND) No interaction. 6.3.19 Do Not Disturb Override (DNDO) No interaction. 6.3.20 Path Re
44、placement (PR) No interaction. 6.3.21 Recall (RE) No interaction. 6.3.22 Route Restriction Class (RRC) No interaction. - 5 - 6.3.23 Wireless Terminal Location Registration (WTLR) No interaction. NOTE A MWI may be directed to the new location. 6.3.24 Wireless Terminal Mobility Incoming Call (WTMI) No
45、 interaction. 6.3.25 Wireless Terminal Mobility Outgoing Call (WTMO) No interaction. 6.3.26 Authentication of a WTM user (WTAT) No interaction. 6.3.27 Authentication of the PISN (WTAN) No interaction. 6.4 Interworking considerations A PISN may be able to accept MWIs from a Message Centre in another
46、network. In this case, the PISN may also be able to interrogate that Message Centre. A PISN may be able to send MWIs to a Served User in another network. In this case, the PISN may also be able to accept interrogation requests from that Served User. 6.5 Overall SDL Figure 1 contains the dynamic desc
47、ription of SS-MWI using the Specification and Description Language (SDL) defined in ITU-T Rec. Z.100 (1999). The SDL process represents the behaviour of the network in providing SS-MWI. Input signals from the left and output signals to the left represent primitives from and to the Message Centre. In
48、put signals from the right and output signals to the right represent primitives from and to the Served User. - 6 - MWI-IdleMWI-IdleMWI-IdleActivation possible? NoYes Confirm activationReject activationSend MWIActivate MWI Figure 1 (part 1) - SS-MWI Overall SDL - 7 - MWI-IdleMWI-IdleMWI-IdleDeactivat
49、ion possible? NoYes Reject deactivationDeactivate MWI Confirm deactivationCancel MWI at Served User Figure 1 (part 2) - SS-MWI Overall SDL - 8 - MWI-IdleMWI-IdleMWI-IdleInterrogation possible? NoYes Send MWI StatusReject interrogation Interrogate MWI Figure 1 (part 3) - SS-MWI Overall SDL - 9 - 7 SS-MWI stage 2 specification 7.1 Functional model 7.1.1 Functional model description The functional model shall comprise the following Functional Entities (FEs): FE1 Message Centres control entity; FE2 Served Users control entity. The following relationship shall exist
