1、ETS 300 050 October 1991 UDC: 621.395 Key words: ISDN, supplementary service. Integrated Services Digital Network (ISDN); Multiple Subscriber Number (MSN) supplementary service Service description ETSI European Telecommunications Standards Institute ETSI Secretariat: B.P. 152 . F - 06561 Valbonne Ce
2、dex . France TP. + 33 92 94 42 O0 TF. + 33 93 65 47 16 Tx. 47 O0 40 F European Telecommunications Standards Institute 1 991. All rights reserved. No part may be reproduced or used except as authorised by contract or other written permission. The copyright and the foregoing restriction on reproductio
3、n and use extend to ail media in which the information may be embodied. 3404583 0028886 7 Page 2 ETS 300 050:1991 Whilst every care has been taken in the preparation and publication of this document, errors in content, typographical or otherwise, may occur. If you have comments concerning its accura
4、cy, please write to “ETSI Standards Management Dept.“ at the address shown on the title page. m 3404583 0028887 9 m - Page 3 ETS 300 050:1991 Contents Foreword 5 1 2 3 4 5 6 7 8 Scope . 7 Normative references 8 Definitions 8 Symbols and abbreviations . 8 Description 9 Procedures 9 Provision and with
5、drawal 9 6.1 6.2 Normal procedur es 9 Activation. deactivation and registration i 9 6.2.1 6.2.2 Eracure 9 6.2.3 Invocation and operation . 9 6.2.4 Interrogation . 10 6.3 Exceptional procedures 10 6.3.1 6.3.3 Invocation and operation . 10 6.3.4 Interrogation . 10 Intercommunication considerations 10
6、Activation. deactivation and registration . 10 6.3.2 Eracure 10 7.1 7.2 Interworking with non-ISDNs 10 Interworking with private ISDNs . 10 Charging information at call Set-up time 11 8.2 Call waiting 11 8.3 Call hold 11 8.4 Call transfer . 11 Interaction with other supplementary services . f . 11 A
7、dvice of charge services . 11 Charging information during the call 11 Charging information at the end of the call . 11 8.1 8.1.1 8.1.2 8.1.3 8.4.1 8.4.2 8.5.1 8.5.2 8.5.3 Explicit call transfer . 11 Single step call transfer . 11 Number identification services . 11 Calling line identification presen
8、tation 11 Calling line identification restriction 12 . 8.5.4 Connected line identification restriction . 12 8.6 8.7 Completion of calls to busy subscriber 12 8.8 Conference services 12 Conference call. add-on 12 Meet me conference 12 Direct dialling in 12 8.5 Connected line identification presentati
9、on . 12 Closed user group . 12 8.8.1 8.8.2 8.9 m 3404583 0028888 O Page 4 ETS 300 050:1991 8.10 8.1 1 8.12 8.1 3 8.14 8.15 8.16 8.17 Diversion services 13 8.10.1 Cali forwarding unconditional . 13 8.10.2 Call forwarding busy 13 8.10.3 Call forwarding no reply 13 8.10.4 Call deflection . -13 Freephon
10、e . 13 Malicious call identification 13 Multiple subscriber number 13 Subaddressing 13 Three party 14 User-user signalling 14 Terminal portability . 14 Annex A (informative) 15 Terminal interchangeability between public and private ISDNs 15 Annex B (informative) 16 Bibliography 16 - 3404583 O028889
11、2 = _- Page 5 ETS 300 050:1991 Foreword This European Telecommunication Standard (ETS) has been produced by the Network Aspects (NA) Technical Committee of the European Telecommunications Standards Institute (ETSI). In accordance with CCITT Recommendation 1.130 111, the following three level structu
12、re is used to describe the supplementary telecommunications services as provided by European public telecommunications operators under the pan-European Integrated Services Digital Network (ISDN): - Stage 1: is an overall service description, from the users standpoint; - Stage 2: identifies the funct
13、ional capabilities and information flows needed to support the service described in stage 1; and - Stage 3: defines the signalling system protocols and switching functions needed to implement the service described in stage 1. This ETS details the stage 1 aspects (overall service description) for the
14、 Multiple Subscriber Number (MSN) supplementary service. ?he stage 2 and stage 3 aspects are detailed in ETC 300 051 (1991) and ETC 300 052 (1991) respectively. o Page i ETS 300 050:1991 1 Scope This standard defines the stage one of the Multiple Subscriber Number (MSN) supplementary service for the
15、 pawEuropean Integrated Services Digital Network (ISDN) as provided by European public telecommunications operators. Stage one is an overall service description from the users point of view (see CCTTT Recommendation 1.130 l), but does not deal with the details of the human interface itself. This sta
16、ndard defines the interworking requirements of private ISDNs with the public ISDN. In addition this standard specifies the base functionality where the service is provided to the user via a private ISDN. This standard does not specify the additional requirements where the service is provided to the
17、user via a telecommunications network that is not an ISDN but does include interworking requirements of other networks with the public ISDN. Interactions with supplementary services not listed in Clause 8 are outside the scope of this standard. Charging principles are outside the scope of this stand
18、ard. The Multiple Subscriber Number (MSN) supplementary service provides the possibility for assigning multiple numbers to a single public or private access. NOTE: This allows e.g.: 1) a calling user to select, via the public network, one or multiple distinct terminals out of a multiple choice: 2) t
19、o identify the terminal to the network for the application of other supplementary services. It is considered: - that in the case of a basic access some service providers may not have knowledge or control over what is connected, e.g. a private ISDN or a terminal configuration: - that service provider
20、s have differing numbering methods. The MSN supplementary service is applicable to all telecommunication services. This standard is applicable to the stage two and stage three standards for the ISDN MSN supplementary service. The terms “stage two“ and Wage three“ are also defined in CCTTT Recommenda
21、tion 1.130 l. Where the text indicates the status of a requirement (.e. as strict command or prohibition, as authorisation leaving freedom, as a capability or possibility), this shall be reflected in the text of the relevant stage two and stage three standards. Furthermore, conformance to this stand
22、ard is met by conforming to the stage three standards with the field of application appropriate to the equipment being implemented. therefore no method of testing is provided for this standard. m 3404583 0028893 O m Page 8 ETS 300 050:1991 2 Normative references This standard incorporates, by dated
23、or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter, For dated references, subsequent amendments to,or revisions of any of these publications apply to this standard only when in
24、corporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. CCITT Recommendation 1.130 (1988): “Method for the characterisation of telecommunication services supported by an ISDN and network capabilities of an ISDNI. 121 CCITT Recommen
25、dation 1.1 12 (1988): Vocabulary of terms for ISDNs“. 131 t41 151 CCITT Recommendation E.164 (1988): “Numbering plan for the ISDN era“. ETS 300 089 (1991): “Integrated Services Digital Network (ISDN); Calling Line Identification Presentation (CLIP) supplementary service: service description1. CCITT
26、Recommendation 1.210 (1988): “Principles of telecommunication services supported by an ISDN and the means to describe them“. CCK Recommendation Q.9 (1 988): “Vocabulary of switching and signalling terms1. 3 Definitions For the purposes of this standard, the following definitions apply: integrated Se
27、rvices Digital Network (ISDN): see CCITT Recommendation 1.112 2, 9 2.3, definition 308. Service; teiecommunicatlon service: see CCTT Recommendation 1.1 12 2, 5 2.2, definition 201 * Supplementary service: see CCITT Recommendation 1.210 5, 6 2.4. ISDN number: a number conforming to the numbering plan
28、 and structure specified in CCTT Recommendation E.164 3. Basic call (procedure): the procedures by which a call (as an instance of a basic telecommunication service) is established and terminated. Muitlpie Subscriber Number: A number used to identify one or more terminals connected to an access. Thi
29、s number comprises either the whole ISDN number of part of the ISDN number - .e. the least significant digit). Basic access: see CCITT Recommendation Q.9 6, 1, definition 1551. Primary rate access: see CCITT Recommendation Q.9 6 9 1 definition 1552. 4 Symbols and abbreviations ISDN Integrated Servic
30、es Digital Network MSN Multiple Subscriber Number 3404583 O028892 2 _ Page 9 ETS 300 050:lSSl 5 Description The MSN supplementary service shall apply to the basic access and the primary rate access. The MSN supplementary service provides the possibility for assigning multiple numbers (not necessaril
31、y consecutive) to a single public or private access. This enables the selection of one or multiple distinct terminals attached to the same access. The service provider shall fix the length of the numbers to be transmitted to the users installation. They may comprise the least significant digit up to
32、 the full ISDN number (see CCITT Recommendation E.164 SI). The digit) significant for terminal differentiation shall be an integral part of the ISDN numbering scheme. NOTE 1: Within a private ISDN, multiple subscriber number digits may be different from the digits of the public ISDN number. This add
33、itional possibility, if provided, has no impact on the public ISDN. NOTE 2: More than one multiple subscriber number may be assigned to one terminal. NOTE 3: The actual method of relating the ISDN number to a particular terminal is outside the scope of this standard. 6 Procedures 6.1 Provision and w
34、ithdrawal The MSN supplementary service shall be provided or withdrawn after prior arrangement with the service provider. The service provider shall allocate a set of ISDN numbers (not necessarily consecutive), to the user in terface. The maximum number of MSNs per access shall be a network option.
35、NOTE : The user can allocate one ISDN number to one or more terminals. Similarly, one terminal may allow the assignment of one or more than one ISDN numbers. Further, for administrative reasons, a specific digit or sequence of digits may be allocated to enable all terminals in a point-to-multipoint
36、configuration, to react in the same way as if the MSN supplementary service is not subscribed to. 6.2 Normal procedures 6.2.1 Activation, deactivation and registration Not applicable. 6.2.2 Erasure Not applicable. 6.2.3 invocation and operatlon Call initiation procedure shall be the same as for basi
37、c services. The calling and called user shall perceive the same completion procedures as for the basic service, I 3404583 0028893 4 W Page 10 ETS 300 050:1991 The number identifying the called user sent by the calling user shall be analysed by the network of the called user. If the called user subsc
38、ribes to the MSN supplementary service, the network shall send all or part of the ISDN number. If part of the ISDN number is sent, it shall be the least significant part of the ISDN number: .e. if one digit is sent, it shall be the last digit of the ISDN number; if n digits are sent, this will be th
39、e last n digits of the ISDN number. In outgoing calls a terminal compatible to the MSN supplementary service can insert a multiple subscriber number in the originating address information of the call request in order to identify itself to the network (see also the calling line identification present
40、ation supplementary service) I4 - 6.2.4 Interrogation Not applicable. 6.3 Exceptional procedures 6.3.1 Activation, deactivation and registration Not applicable. 6.3.2 Erasure Not applicable. 6.3.3 Invocation and operation If the called user is busy or does not answer, the procedures for basic call s
41、hall apply. Terminals not compatible with the MSN supplementary service and receiving a call request containing multiple subscriber number digit(s), shall interpret it as a basic call. NOTE: If different kinds of terminals are attached to the same interface, e.g. in passive bus configurations, it ca
42、nnot be guaranteed that the MSN supplementary service will be processed correctly. In particular cases where terminals supporting the MSN supplementary service and terminals which do not are attached to the same interface, those terminals which do not support the MSN supplementary service will react
43、 to every incoming call, based only on the check of the requested service indicated. On such an access, the MSN supplementary service may be overridden by the basic call procedures. 6.3.4 Interrogation Not applicable. 7 Intercommunication considerations 7.1 Interworking with non-ISDNs As for basic c
44、all. 7.2 Interworking with private ISDNs As for basic call. In some networks, the MSN supplementary service can apply at an access to a private ISDN (e.g. if the public network does not know what equipment is connected to the access). 3404583 0028894 b Page 11 ETS 300 050:1991 8 Interaction with oth
45、er supplementary services in case of interaction with other supplementary services, these services may, as a network option, be applicable to the individual multiple subscriber number rather than to the subscriber access. 8.1 Advlce of charge services 8.1.1 Charglng information at call Set-up time N
46、o impact, .e. neither Supplementary service shall affect the operation of the other supplementary service. 8.1.2 Charging information during the call No impact, Le. neither supplementary service shall affect the operation of the other supplementary service. 8.1.3 Charging information at the end of t
47、he call No impact, .e. neither supplementary service shall affect the operation of the other supplementary service. 8.2 Call waiting No impact, .e. neither supplementary service shall affect the operation of the other supplementary service. 8.3 Cali hold No impact, .e. neither supplementary service
48、shall affect the operation of the other supplementary service. 8.4 Call transfer 8.4.1 Explicit call transfer No impact, .e. neither supplementary service shall affect the operation of the other supplementary service. 8.4.2 Slngle step call transfer No impact, .e. neither supplementary service shall
49、 affect the operation of the other Supplementary service. 8.5 Number identification services 8.5.1 Calling line identification presentation If the MSN supplementary service is applicable to the public network access interface of the calling party, then this party can provide the appropriate calling party multiple subscriber number digits or full ISDN number on outgoing call requests. If no special arrangement has been made with the calling subscriber, then the network shall check the user provided calling party number information for
