ITU-T Q 950-2000 Supplementary Services Protocols Structure and General Principles Series Q Switching and Signalling Digital Subscriber Signalling System No 1 - Stage 3 Descriptiony .pdf

1、 INTERNATIONAL TELECOMMUNICATION UNION Q.950TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (06/2000) SERIES Q: SWITCHING AND SIGNALLING Digital subscriber Signalling System No. 1 Stage 3 description for supplementary services using DSS1 Supplementary services protocols, structure and general princi

2、ples ITU-T Recommendation Q.950 (Formerly CCITT Recommendation) ITU-T Q-SERIES RECOMMENDATIONS SWITCHING AND SIGNALLING SIGNALLING IN THE INTERNATIONAL MANUAL SERVICE Q.1Q.3 INTERNATIONAL AUTOMATIC AND SEMI-AUTOMATIC WORKING Q.4Q.59 FUNCTIONS AND INFORMATION FLOWS FOR SERVICES IN THE ISDN Q.60Q.99 C

3、LAUSES APPLICABLE TO ITU-T STANDARD SYSTEMS Q.100Q.119 SPECIFICATIONS OF SIGNALLING SYSTEMS No. 4 AND No. 5 Q.120Q.249 SPECIFICATIONS OF SIGNALLING SYSTEM No. 6 Q.250Q.309 SPECIFICATIONS OF SIGNALLING SYSTEM R1 Q.310Q.399 SPECIFICATIONS OF SIGNALLING SYSTEM R2 Q.400Q.499 DIGITAL EXCHANGES Q.500Q.599

4、 INTERWORKING OF SIGNALLING SYSTEMS Q.600Q.699 SPECIFICATIONS OF SIGNALLING SYSTEM No. 7 Q.700Q.799 Q3 INTERFACE Q.800Q.849 DIGITAL SUBSCRIBER SIGNALLING SYSTEM No. 1 Q.850Q.999 General Q.850Q.919 Data link layer Q.920Q.929 Network layer Q.930Q.939 User-network management Q.940Q.949 Stage 3 descript

5、ion for supplementary services using DSS1 Q.950Q.999 PUBLIC LAND MOBILE NETWORK Q.1000Q.1099 INTERWORKING WITH SATELLITE MOBILE SYSTEMS Q.1100Q.1199 INTELLIGENT NETWORK Q.1200Q.1699 SIGNALLING REQUIREMENTS AND PROTOCOLS FOR IMT-2000 Q.1700Q.1799 BROADBAND ISDN Q.2000Q.2999 For further details, pleas

6、e refer to the list of ITU-T Recommendations. ITU-T Q.950 (06/2000) i ITU-T Recommendation Q.950 Supplementary services protocols, structure and general principles Summary This Recommendation provides an overview of the ITU-T Q.95x-series of Recommendations on the Stage 3 descriptions of ISDN Supple

7、mentary Services and the general principles on which these Stage 3 descriptions are based. The ITU-T Q.95x-series of Recommendations is structured and numbered in a similar manner to the ITU-T I.25x-series of Recommendations on Stage 1 ISDN supplementary services descriptions and the ITU-T Q.8x-seri

8、es of Recommendations on Stage 2 descriptions. The ITU-T Q.95x-series of Recommendations cover the protocol descriptions for DSS1. An overview of the SS No. 7 protocol descriptions is provided in ITU-T Q.730 1. The Stage 3 protocol descriptions in the ITU-T Q.95x-series using the Facility Informatio

9、n Element of the Functional Protocol are based on the generic procedures established in ITU-T Q.932 5. Any of the generic procedures in ITU-T Q.932 5 (Keypad, Feature Key Management and Functional Protocols) can be used for the control of supplementary services. The detailed functional protocol proc

10、edures are provided in the ITU-T Q.95x-series Recommendations. This Recommendation lists the allocated INTEGER values for operations and errors defined in ITU-T Q.932 5 and for supplementary services defined within the ITU-T Q.95x-series Recommendations. The individual ERROR values are complemented

11、by a brief definition of the error characteristics. Source ITU-T Recommendation Q.950 was revised by ITU-T Study Group 11 (1997-2000) and approved under the WTSC Resolution 1 procedure on 15 June 2000. ii ITU-T Q.950 (06/2000) FOREWORD The International Telecommunication Union (ITU) is the United Na

12、tions specialized agency in the field of telecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunic

13、ations on a worldwide basis. The World Telecommunication Standardization Conference (WTSC), which meets every four years, establishes the topics for study by the ITU-T study groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the proced

14、ure laid down in WTSC Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a teleco

15、mmunication administration and a recognized operating agency. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, va

16、lidity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had not received notice of intellectual property, protected by patents, which may be re

17、quired to implement this Recommendation. However, implementors are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database. Ge3 ITU 2001 All rights reserved. No part of this publication may be reproduced or utilized in any form

18、 or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from ITU. ITU-T Q.950 (06/2000) iii CONTENTS Page 1 Scope. 1 2 References . 1 3 Description 3 3.1 Structure of ITU-T Q.95x-series Recommendations 3 4 General principles . 4 4.1 Generic pro

19、tocol procedures . 4 4.2 ASN.1 data type 4 4.3 Generic syntax of operations. 4 4.3.1 Specification of operations 4 5 Library of operation values . 6 5.1 Assignment of INTEGER values for operations and errors 6 5.1.1 Operation value assignment. 6 5.1.2 Error value assignment 10 5.1.3 Definition of th

20、e general error list 11 5.1.4 List of service-specific Errors 14 Appendix I Clause headings of each Recommendation . 20 ITU-T Q.950 (06/2000) 1 ITU-T Recommendation Q.950 Supplementary services protocols, structure and general principles 1 Scope This Recommendation provides an overview of the ITU-T

21、Q.95x-series of Recommendations on the Stage 3 descriptions of ISDN Supplementary Services and the general principles on which these Stage 3 descriptions are based. 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, constit

22、ute provisions of this Recommendation. At the time of publication, the editions indicated were valid. All Recommendations and other references are subject to revision; users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of the Reco

23、mmendations and other references listed below. A list of the currently valid ITU-T Recommendations is published regularly. 1 ITU-T Q.730 (1999), ISDN User Part supplementary services. 2 ITU-T Q.775 (1997), Guidelines for using transaction capabilities. 3 ITU-T Q.920 (1993), ISDN user-network interfa

24、ce data link layer General aspects. 4 ITU-T Q.931 (1998), ISDN user-network interface layer 3 specification for basic call control. 5 ITU-T Q.932 (1998), Digital Subscriber Signalling System No. 1. Generic procedures for the control of ISDN supplementary services. 6 ITU-T Q.951.1 (1992), Stage 3 des

25、cription for number identification supplementary services using DSS 1: Direct-dialling-in (DDI). 7 ITU-T Q.951.2 (1992), Stage 3 description for number identification supplementary services using DSS 1: Multiple subscriber number (MSN). 8 ITU-T Q.951.3 (1993), Stage 3 description for number identifi

26、cation supplementary services using DSS 1: Calling line identification presentation. 9 ITU-T Q.951.4 (1993), Stage 3 description for number identification supplementary services using DSS 1: Calling line identification restriction. 10 ITU-T Q.951.5 (1993), Stage 3 description for number identificati

27、on supplementary services using DSS 1: Connected line identification presentation. 11 ITU-T Q.951.6 (1993), Stage 3 description for number identification supplementary services using DSS 1: Connected line identification restriction. 12 ITU-T Q.951.7 (1997), Stage 3 description for number identificat

28、ion supplementary services using DSS 1: Malicious call identification (MCID). 13 ITU-T Q.951.8 (1992), Stage 3 description for number identification supplementary services using DSS 1: Sub-addressing (SUB). 14 ITU-T Q.952 (1993), Stage 3 service description for call offering supplementary services u

29、sing DSS 1 Diversion supplementary services. 15 ITU-T Q.952.7 (1997), Stage 3 description for call offering supplementary services using DSS 1: Explicit call transfer (ECT). 2 ITU-T Q.950 (06/2000) 16 ITU-T Q.953, Stage 3 description for call completion supplementary services using DSS 1. 17 ITU-T Q

30、.953.1 (1992), Stage 3 description for call completion supplementary services using DSS 1: Call waiting. 18 ITU-T Q.953.2 (1993), Stage 3 description for call completion supplementary services using DSS 1: Call hold. 19 ITU-T Q.953.3 (1997), Stage 3 description for call completion supplementary serv

31、ices using DSS 1: Completion of calls to busy subscribers (CCBS). 20 ITU-T Q.953.4 (1995), Stage 3 description for call completion supplementary services using DSS 1: Terminal Portability (TP). 21 ITU-T Q.953.5 (1999), Stage 3 description for call completion supplementary services using DSS 1: Call

32、Completion on No Reply (CCNR). 22 ITU-T Q.954, Stage 3 description for multiparty supplementary services using DSS 1. 23 ITU-T Q.954.1 (1993), Stage 3 description for multiparty supplementary services using DSS 1: Conference calling. 24 ITU-T Q.954.2 (1995), Stage 3 description for multiparty supple

33、mentary services using DSS 1: Three-party service (3PTY). 25 ITU-T Q.955, Stage 3 description for community of interest supplementary services using DSS 1. 26 ITU-T Q.955.1 (1992), Stage 3 description for community of interest supplementary services using DSS 1: Closed user group. 27 ITU-T Q.955.3 (

34、1993), Stage 3 description for community of interest supplementary services using DSS 1: Multi-level precedence and preemption (MLPP). 28 ITU-T Q.956, Stage 3 description for charging supplementary services using DSS 1. 29 ITU-T Q.956.2 (1995), Stage 3 description for charging supplementary services

35、 using DSS 1: Advice of charge. 30 ITU-T Q.956.3 (1995), Stage 3 description for charging supplementary services using DSS 1: Reverse charging. 31 ITU-T Q.957, Stage 3 description for additional information transfer supplementary services using DSS 1. 32 ITU-T Q.957.1 (1996), Stage 3 description for

36、 additional information transfer supplementary services using DSS 1: User-to-user signalling (UUS). 33 CCITT X.208 (1988) | ISO/IEC 8824:1990, Specification of Abstract Syntax Notation One (ASN.1). 34 CCITT X.219 (1988) | ISO/IEC 9072-1:1989, Remote Operations: Model, notation and service definition

37、. 35 CCITT X.229 (1988) | ISO/IEC 9072-2:1989, Remote operations: Protocol specification. 36 ITU-T X.680 (1997) | ISO/IEC 8824-1:1998, Information technology Abstract Syntax Notation One (ASN.1): Specification of basic notation. 37 ITU-T X.880 (1994) | ISO/IEC 13712-1:1995, Information technology Re

38、mote Operations: Concepts, model and notation. ITU-T Q.950 (06/2000) 3 3 Description 3.1 Structure of ITU-T Q.95x-series Recommendations The Q.95x-series of Recommendations is structured and numbered in a similar manner to the ITU-T I.25x-series of Recommendations on Stage 1 ISDN supplementary servi

39、ces descriptions and the ITU-T Q.8x-series of Recommendations on Stage 2 descriptions. The ITU-T Q.95x-series of Recommendations cover the protocol descriptions for DSS1. An overview of the SS No. 7 protocol descriptions is provided in ITU-T Q.730 1. The Stage 3 supplementary services definitions ar

40、e structured as follows: ITU-T Q.951 Number Identification supplementary services Clause 1 Direct-Dialling-In (DDI) 6 Clause 2 Multiple Subscriber Number (MSN) 7 Clause 3 Calling Line Identification Presentation (CLIP) 8 Clause 4 Calling Line Identification Restriction (CLIR) 9 Clause 5 Connected Li

41、ne Identification Presentation (COLP) 10 Clause 6 Connected Line Identification Restriction (COLR) 11 Clause 7 Malicious Call Identification (MCID) 12 Clause 8 Sub-addressing (SUB) 13 ITU-T Q.952 Call Offering supplementary services Clause 2 Call Forwarding Busy (CFB) 14 Clause 3 Call Forwarding No

42、Reply (CFNR) 14 Clause 4 Call Forwarding Unconditional (CFU) 14 Clause 5 Call Deflection (CD) 14 Clause 7 Explicit Call Transfer (ECT) 15 ITU-T Q.953 Call Completion supplementary services Clause 1 Call Waiting (CW) 17 Clause 2 Call Hold (HOLD) 18 Clause 3 Completion of Calls to Busy Subscriber (CCB

43、S) 19 Clause 4 Terminal Portability (TP) 20 Clause 5 Completion of Calls on No Reply (CCNR) 21 ITU-T Q.954 Multiparty supplementary services Clause 1 Conference Calling (CONF) 23 Clause 2 Three-Party (3PTY) 24 ITU-T Q.955 Community of Interest supplementary services Clause 1 Closed User Group (CUG)

44、26 Clause 3 Multi-level Precedence and Preemption (MLPP) 27 ITU-T Q.956 Charging supplementary services Clause 2 Advice of Charge (AOC) 29 Clause 3 Reverse Charging (REV) 30 ITU-T Q.957 Additional Information Transfer supplementary services Clause 1 User-to-User Signalling (UUS) 32 4 ITU-T Q.950 (06

45、/2000) 4 General principles 4.1 Generic protocol procedures The Stage 3 protocol descriptions in the ITU-T Q.95x-series using the Facility information element of the Functional protocol are based on the generic procedures established in ITU-T Q.932 5. Any of the generic procedures in ITU-T Q.932 5 (

46、Keypad, Feature Key, and functional protocols) can be used for the control of supplementary services. The detailed functional protocol procedures are provided in the ITU-T Q.95x-series Recommendations. 4.2 ASN.1 data type The operation required by the ITU-T Q.95x supplementary services using the ITU

47、-T Q.932 5 Functional procedures are defined as ASN.1 data types in the ITU-T Q.95x-series of Recommenda-tions. This Recommendation contains the definition of DSS1 operation values and errors as a Library of these values. These operation and error values can be imported and used as required by the i

48、ndividual supplementary services. Their associated detailed definitions of operations and errors using ASN.1 (Abstract Syntax Notation One) are provided in the ITU-T Q.95x-series of Recommendations for the individual services. 4.3 Generic syntax of operations This clause provides the definition of d

49、ata related functions associated with a particular service. The operation is derived from the remote operations concept defined in ITU-T X.219 34 and ITU-T X.229 35 and allows the data structures transmitted for a particular object to be defined in terms of an invoke, return result or a return error. The concrete syntax and thus the particular protocol to be implemented are provided in the definition of the protocol