ETSI ES 201 481-2000 Integrated Services Digital Network (ISDN) ISDN Service Enhancements Based on DDI Ranges for the Call Diversion Supplementary Services (V1 1 1)《综合业务数字网(ISDN) 基.pdf

1、ETSI ES 201 481 1.1.1 (2000-03) ETSI Standard Integrated Services Digital Network (ISDN); ISDN service enhancements based on DDI ranges for the call diversion supplementary services 2 ETSI ES 201 481 V1.l.l (2000-03) Reference DESISPAN-O20075 Keywords DDI, ISDN, supplementary service ETSI Postal add

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3、secretariata et.si.fr Individual copies of this ETSI deliverable can be downloaded from http:/www.etsi.org If you find errors in the present document, send your comment to: editorQetsi.fr Important notice This ETSI deliverable may be made available in more than one electronic version or in print. In

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5、t Notification No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. O European Telecommunications Standards Institute 2000. All rights reserved. ETSI 3 ETSI ES 201 481 V1.l.l (2000-03) Contents Intellec

6、tual Property Rights 4 Foreword 4 Introduction 4 1 2 3 3.1 3.2 4 5 6 6.1 6.1.1 6.1.2 6.1.3 6.1.4 6.1.5 Scope 5 References 5 Definitions and abbreviations 6 Definitions 6 Abbreviations . 6 User requirements 6 Description . 6 Intercommunication considerations . 8 Effect of DDI ranges on the DDI supple

7、mentary service and the interactions with the call diversion supplementary services . 8 Call Forwarding Unconditional (CFU) . 8 Call Forwarding Busy (CFl3) 8 Call Forwarding No Reply (CFNR) 8 Call Deflection (CD) . 8 Selective Call Forwarding (SCF) 8 Bibliography . 9 History 10 ETSI 4 ETSI ES 201 48

8、1 V1.l.l (2000-03) Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in SR O00 3 14: “Intell

9、ectual Propero Rights (IPRs); Essential, or potentially Essential, IPRs notifed to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http:/www.etsi.org/ipr). Pursuant to the ETSI IPR Policy, no investigation, includ

10、ing IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in SR O00 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This ETSI Standard (ES) has been produced

11、by ETSI Technical Committee Services and Protocols for Advanced Networks (SPAN). Introduction The present document describes the structure and the functions of DDI ranges and the effects on the DDI supplementary service and the call diversion supplementary services. ETSI 5 ETSI ES 201 481 V1.l.l (20

12、00-03) 1 Scope The present document defines the possibility to assign call diversion supplementary services to a DDI range as an alternative to assigning supplementary services to the whole hunt group. The purpose of the introduction of DDI ranges is to fulfil the user requirements concerning the DD

13、I supplementary service and the interactions with the call diversion supplementary services. The present document shall be considered as a base for the revision of the interaction sections of the DDI supplementary service and the call diversion supplementary services. The ISDN Service enhancements b

14、ased on DDI ranges for the call diversion supplementary services are applicable to all circuit-switched telecommunication services. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. References are either spec

15、ific (identified by date of publication, edition number, version number, etc.) or non-specific. For a specific reference, subsequent revisions do not apply. For a non-specific reference, the latest version applies. A non-specific reference to an ETS shall also be taken to refer to later versions pub

16、lished as an EN with the same ITU-T Recommendation I. 112 (1993): “Vocabulary of terms for ISDNs“. ITU-T Recommendation 1.210 (1993): “Principles of telecommunication services supported by an ISDN and the means to describe them“. ITU-T Recommendation E. 164 (1997): “The international public telecomm

17、unication numbering plan“. ETSI ETS 300 062 (1991): “Integrated Services Digital Network (ISDN); Direct Dialling In (DDI) supplementary service; Service description“. ETSI ETS 300 199 (1994): “Integrated Services Digital Network (ISDN); Call Forwarding Busy (CFl3) supplementary service; Service desc

18、ription“. ETSI EN 301 133 (1997): “Integrated Services Digital Network (ISDN); Selective Call Forwarding (SCF) supplementary services (unconditional, busy and no reply); Service description“. ETSI 6 ETSI ES 201 481 V1.l.l (2000-03) 3 3.1 Definitions and abbreviations Definitions For the purposes of

19、the present document, the following terms and definitions apply: DDI range: summarized group of sequential DDI numbers including one or more than one DDI number The DDI range is specified as a subscription option to allow controlling of supplementary services as an alternative to the assigning of su

20、pplementary services to the whole access. DDI range identifier: first DDI number of each DDI range to identify this range for activation, deactivation and/or interrogation procedures Integrated Services Digital Network (ISDN): see ITU-T Recommendation 1.1 12 i, subclause 2.3, definition 308 suppleme

21、ntary service: see ITU-T Recommendation 1.210 2, subclause 2.4 ISDN number: number conforming to the numbering plan and structure specified in ITU Recommendation E.164 3 basic access: see ITU-T Recommendation I. 112 i, subclause 2.4, definition 425 primary rate access: see ITU-T Recommendation 1.1 1

22、2 i, subclause 2.4, definition 426 access: general term, used in the present document, denoting basic accesses and/or primary rate accesses 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: ISDN Integrated Services Digital Network DDI Direct Dialling In 4

23、 User requirements - For the user it is possible to control the activation, deactivation and interrogation based on DDI ranges as an alternative to the “all numbers“ option. The use of a DDI range allows more flexibility in managing a complex private network. Where the private network consists of se

24、veral nodes corresponding to DDI ranges, it allows specific treatment of calls to each node over a shared public access. If a private network on a customer site fails or is taken out of service, the public network can readily forward calls to a second destination. - - - 5 Description The application

25、 of DDI ranges is intended for the use on accesses to which a private ISDN is connected to the public ISDN at the T reference point. The provision of DDI ranges is a service provider option. DDI ranges shall be provided or withdrawn after prior arrangement with the service provider. The use of DDI r

26、anges requires the provision of the DDI supplementary service to a hunt group. ETSI 7 ETSI ES 201 481 V1.l.l (2000-03) The private network provider controls DDI ranges by using the first DDI number of each DDI range as a DDI range identifier. A DDI range consists of a coherent block of sequential DD

27、I numbers (e.g. 100 to 199). As a service provider option a DDI range can include non-sequential sets of DDI numbers (e.g. 204, 301, 306). The use of different sized ranges starting with the same DDI number (DDI range identifier) is not possible. The application of DDI ranges has to ensure a clear i

28、dentification of the DDI range to allow a flexible handling of supplementary services associated with the DDI range. The configuration of overlapping ranges (e.g. ranges 100 to 199 and 157 to 189) and a multiple allocation of DDI range identifiers per hunt group number shall not apply. DDI ranges do

29、 not have to cover the whole hunt group. Between the ranges gaps can exist (e.g. one range is 100 to 199 and the next is 300 to 399). The service can be offered with the following network provider option giving: - the maximum number of DDI ranges per hunt group (range 1 to 15). The maximum value use

30、d is chosen by the network operator. Private network Public network I I I Service profile I Service profile I Service profile I Service profile li I Figure 1 : Access configuration with DDI ranges ETSI 8 ETSI ES 201 481 V1.l.l (2000-03) 6 I n t e rcom m u n cat ion consi de rat i o ns 6.1 Effect of

31、DDI ranges on the DDI supplementary service and the interactions with the call diversion supplementary services This subclause applies also for the DDI 4 and the call diversion supplementary service descriptions 5 - 6. 6.1.1 Call Forwarding Unconditional (CFU) As a service provider option, the serve

32、d user can, if subscribed to, indicate that the activation of the CFU supplementary service shall apply for a DDI range for which the CFU supplementary service is subscribed to. In this case the activation for these DDI ranges shall replace any previous activation of the CFU supplementary service on

33、 basis of the whole access. 6.1.2 Call Forwarding Busy (CFB) As a service provider option, the served user can, if subscribed to, indicate that the activation of the CFl3 supplementary service shall apply for a DDI range for which the CFl3 supplementary service is subscribed to. In this case the act

34、ivation for these DDI ranges shall replace any previous activation of the CFl3 supplementary service on basis of the whole access. 6.1.3 Call Forwarding No Reply (CFNR) As a service provider option, the served user can, if subscribed to, indicate that the activation of the CFNR supplementary service

35、 shall apply for a DDI range for which the CFNR supplementary service is subscribed to. In this case the activation for these DDI ranges shall replace any previous activation of the CFNR supplementary service on basis of the whole access. 6.1.4 Call Deflection (CD) As a service provider option, the

36、CD supplementary service can be provided on a DDI range basis or to the whole access. 6.1.5 Selective Call Forwarding (SCF) As a service provider option, the served user can, if subscribed to, indicate that the activation of the SCF supplementary service shall apply for a DDI range for which the SCF

37、 supplementary service is subscribed to. In this case the activation for these DDI ranges shall replace any previous activation of the SCF supplementary service on basis of the whole access. ETSI 9 ETSI ES 201 481 V1.l.l (2000-03) Bibliography The following material, though not specifically referenc

38、ed in the body of the present document (or not publicly available), gives supporting information. - ETSI DENEPAN-020028 (1994): “ Integrated Services Digital Network (ISDN); Trunk Hunting (TH) supplementary service; Service description“. ETSI ETS 300 200 (1994): “Integrated Services Digital Network

39、(ISDN); Call Forwarding Unconditional (CFU) supplementary service; Service description“. ETSI ETS 300 201 (1994): “Integrated Services Digital Network (ISDN); Call Forwarding No Reply (CFNR) supplementary service; Service description“. ETSI ETS 300 202 (1994): “Integrated Services Digital Network (I

40、SDN); Call Deflection (CD) supplementary service; Service description“. ETSI ETS 300 345 (1995): “Integrated Services Digital Network (ISDN); Interworking between public and private ISDNs for the provision of telecommunication services; General aspects“. - - - - ETSI 10 ETSI ES 201 481 V1.l.l (2000-03) History I Document history I I V1.l.l I December 1999 I Membership Approval Procedure MV 200006: 1999-12-14 to 2000-02-11 I V1.l.l I March 2000 I Publication ETSI