1、INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Q.763 (1 2/1999) SERIES Q: SWITCHING AND SIGNALLING Specifications of Signalling System No. 7 - ISDN user part Signalling System No. 7 - ISDN user part formats and codes ITU-T Recommendation Q.763 (Formerly C
2、CITT Recommendation) ITU-T Q-SERIES RECOMMENDATIONS SWITCHING AND SIGNALLING SIGNAL.LING IN THE INTERNATIONAL MANUAL SERVICE INTEWATIONAL AUTOMATIC AND SEMI-AUTOMATIC WORKING FUNCTIONS AND INFORMATION FLOWS FOR SERVICES IN THE ISDN SPECIFICATIONS OF SIGNALLING SYSTEMS No. 4 AND NO. 5 SPECIFICATIONS
3、OF SIGNALLING SYSTEM No. 6 SPECIFICATIONS OF SIGNALLING SYSTEM R1 SPECIFICATIONS OF SIGNALLING SYSTEM R2 DIGITAL EXCHANGES INTERWORKING OF SIGNALLING SYSTEMS SPECIFICATIONS OF SIGNALLING SYSTEM No. 7 CLAUSES APPLICABLE TO ITU-T STANDARD SYSTEMS General Message transfer part (MTP) Signalling connecti
4、on control part (SCCP) Telephone user part (TUP) ISDN supplementary services Data user part Signalling System No. 7 management Transaction capabilities application part Test specification 43 interface -I_ - - _I _- DIGITAL SUBSCRIBER SIGNALLING SYSTEM No. 1 PUBLIC LAND MOBILE NETWORK INTERWORKING WI
5、TH SATELLITE MOBILE SYSTEMS INTELLIGENT NETWORK BROADBAND ISDN SIGNALLING REQUIREMENTS AND PROTOCOLS FOR IMT-2000 Q. 1-4.3 4.44.59 4.60-4.99 Q. 100-Q. 1 19 Q. 120-4.249 Q.250-Q.309 4.310-4.399 Q.40O-Q.499 4.500-Q.599 4.600-4.699 4.700-4.849 4.700 4.70 1-4.709 4.71 1-4.719 4.720-4.729 4.730-4.739 4.7
6、40-4.749 0.750-0.759 . . 4.770-4.779 4.780-4.799 4.800-Q.849 Q.850-Q.999 Q. lOOCrQ.1099 Q.1 lOCrQ.1199 Q. 1200-4.1 699 Q. 1700-4.1799 Q.200CkQ.2999 For further details, please refer to the list of ITU-TRecommendations ITU-T Recommendation 4.763 Signalling System No. 7 - ISDN user part formats and co
7、des Summary This Recommendation specifies the formats and codes of the ISDN user part messages and parameters required to support basic bearer services and supplementary services. Source ITU-T Recommendation 4.763 was revised by ITU-T Study Group 11 (1997-2000) and approved under the WTSC Resolution
8、 1 procedure on 3 December 1999. FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. IT-T is responsible for studying technical, ope
9、rating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications 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 tum,
10、 produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure 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 IS0 and IEC. NOTE I
11、n this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or implementation of this Recommendation may inv
12、olve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity 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 Rec
13、ommendation, ITU had not received notice of intellectual property, protected by patents, which may be required 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.
14、 o ITU 2001 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from ITU. CONTENTS Page O o . 1 0.2 0.3 0.4 1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10
15、 1.11 1.12 1.13 2 2.1 2.2 2.3 3 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 Scope. references. definitions. abbreviations . Scope References Tenns and definitions . Abbreviations . General coding principles . Routing label Circuit identification code Message type code Formatting principles Mandatory fi
16、xed part Mandatory variable part . Optional part . End of optional parameters octet Order oftransmission . Coding of spare bits National message types and parameters . Rules for the allocation of message types codes and parameter name codes . Meaning of “spare“ codes and “reserved“ codes Parameter c
17、odes Message type codes Coding of the length indicator Coding ofthe pointers ISDN user part parameters . Parameter names . Access delivery information . Access transport Automatic congestion level Backward call indicators Call diversion information Call history information . Call reference (national
18、 use) . Called party number . Calling party number 1 1 1 1 2 3 4 4 11 12 12 13 13 13 13 14 14 15 15 15 15 15 15 16 16 18 19 19 19 21 22 22 22 24 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 3.20 3.21 3.22 3.23 3.24 3.25 3.26 3.27 3.28 3.29 3.30 3.31 3.32 3.33 3.34 3.35 3.36 3.37 3.38 3.39 3.40 3.41
19、3.42 3.43 3.44 3.45 3.46 Calling partys category Circuit group supervision message type . Circuit state indicator (national use) . Closed user group interlock code . Connected number Connection request . Continuity indicators Echo control information End of optional parameters . Event information .
20、Facility indicator . Forward call indicators . Generic digits (national use) . Generic notification indicator . Generic number Cause indicators . Reserved (used in 1992 version) Information indicators (national use) . Information request indicators (national use) . Location number . MCID request ind
21、icators MCID response indicators Message compatibility information MLPP precedence . Nature of connection indicators Network specific facility (national use) Optional backward call indicators Optional forward call indicators . Origination ISC point code . Parameter compatibility information Propagat
22、ion delay counter Redirecting number Redirection information Redirection number . . Original called number . Range and status . Page 25 26 26 27 28 28 29 29 30 30 31 31 32 33 33 35 37 37 38 38 40 40 41 42 43 43 44 45 45 46 46 47 48 49 49 50 3.47 3.48 3.49 3.50 3.51 3.52 3.53 3.54 3.55 3.56 3.57 3.58
23、 3.59 3.60 3.61 3.62 3.63 3.64 3.65 3.66 3.67 3.68 3.69 3.70 3.71 3.72 3.73 3.74 3.75 3.76 3.77 3.78 3.79 3.80 3.81 3.82 Redirection number restriction . Remote operations (national use) . Service activation . Signalling point code (national use) . Subsequent number Suspendresume indicators . Transi
24、t network selection (national use) . Transmission medium requirement Transmission medium requirement prime Transmission medium used User service information User service information prime User teleservice information . User-to-user indicators . User-to-user information Backward GVNS CCSS Call transf
25、er number . Call transfer reference Forward GVNS . Loop prevention indicators . Network management controls . Circuit assignment map Correlation id SCF id . Call diversion treatment indicators . Called IN number . Call offering treatment indicators . Charged party identification (national use) Confe
26、rence treatment indicators . Display information UID action indicators . UD capability indicators . Hop counter Collect call request . Application transport parameter (ATP) Page 51 51 60 61 61 61 62 63 64 64 65 65 65 65 67 67 67 68 69 69 71 72 72 73 73 73 74 74 74 74 75 75 76 76 76 77 3.83 CCNR poss
27、ible indicator 3.84 Pivot capability . 3.85 Pivot routing indicators Called directory number (national use) Original Called IN number . 3.88 Calling geodetic location Ellipsoid point with uncertainty shape description . Point with altitude and uncertainty shape description . Ellipsoid circle sector
28、shape description . 3.88.6 Polygon shape description . 3.86 3.87 3.88.1 3.88.2 3.88.3 3.88.4 Ellipse on the ellipsoid shape description . 3.88.5 Ellipsoid point shape description 3.89 HTR information 3.90 Network routing number (national use) 3.91 Query on release capability (network option) 3.92 Pi
29、vot status (national use) . 3.93 Pivot Counter 3.94 Pivot routing forward information Return to invoking exchange possible (national use) Return to invoking exchange call identifier (national use) . 3.94.3 Performing pivot indicator 3.94.4 Invoking pivot reason Pivot routing backward information . R
30、eturn to invoking exchange duration (national use) . Return to invoking exchange call identifier (national use) . 3.95.3 Invoking pivot reason Redirect capability (national use) . Redirect counter (national use) . Redirect status (national use) Redirect forward information (national use) 3.99.1 Retu
31、rn to invoking exchange possible 3.99.2 Return to invoking exchange call identifier 3.99.3 Performing redirect indicator 3.99.4 Invoking redirect reason Redirect backward information (national use) . 3.1 O0 . 1 Return to invoking exchange duration 3.100.2 Return to invoking exchange call identifier
32、3.100.3 Invoking redirect reason 3.94.1 3.94.2 3.95 3.95.1 3.95.2 3.96 3.97 3.98 3.99 3.1 O0 Page 78 79 79 80 81 81 82 83 83 85 86 87 88 88 89 90 90 90 91 91 91 92 92 92 92 92 93 93 93 94 94 94 94 95 95 95 96 96 . 3.1 O1 4 Number portability forward information (network option) ISDN user part messag
33、es Annex A . Tables for handling of unrecognized parameter values Annex B . General description of component encoding rules B . 1 B.2 Tags Form of the information element General components structure B.2.1 Tag class B.2.3 Tag code B.3 Length ofthe contents B.2.2 B.4 Contents Page 96 96 111 118 118 1
34、19 119 120 120 121 122 ITU-T Recommendation Q.763 Signalling System No. 7 - ISDN user part formats and codes O Scope, references, definitions, abbreviations 0.1 Scope This ITU-T Recommendation specifies the formats and codes of the ISDN user part messages and parameters required to support basic bea
35、rer services and supplementary services. 0.2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, constitute provisions of this Recommendation. At the time of publication, the editions indicated were valid. All Recommendations
36、and other references are subject to revision; all users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of the Recommendations and other references listed below. A list of the currently valid ITU-T Recommendations is regularly publis
37、hed. ITU-T Recommendation X.680 (1 997) 1 ISO/IEC 8824-1 : 1998, Information technology - Abstract Syntax Notation One (ASN. 1): Speczfication of basic notation. ITU-T Recommendation X.690 (1 997) I ISO/IEC 8825-1 : 1998, Information technology - ASN. 1 encoding rules: Specijication of Basic Encodin
38、g Rules (BER), Canonical Encoding Rules (CER) and Distinguished Encoding Rules (DER). ITU-T Recommendation X.2 19 (1 988), Remote operations: Model, notation, and service definition. ITU-T Recommendation X.229 (1 988), Remote operations: Protocol speczfication. ITU-T Recommendation G.704 (1998), Syn
39、chronous frame structures used at 1544, 6312, 2048, 8488 and 44 736 kbith hierarchical levels. ITU-T Recommendation 4.93 1 (1 998), ISDN user-network interface layer 3 speczfication for basic call control. ITU-T Recommendation Q.850 (1998), Usage of cause and location in the Digital Subscriber Signa
40、lling System No. I and the Signalling System No. 7 ISDN User Part. ITU-T Recommendation 4.703 (1 996), Signalling link. ITU-T Recommendation Q.704 (1 996), Signalling network functions and messages. ITU-T Recommendation Q.2763 (1999), Signalling System No. 7 B-ISDN User Part (B-ISUP) -Formats and co
41、des. ITU-T Recommendation Q. 121 8 (1995), Interface Recommendation for intelligent network cs-I. ITU-T Recommendation Q. 1228 (1 997), Interface Recommendation for intelligent network Capability Set 2. Terms and definitions See ITU-T Recommendation 4.762. 0.4 Abbreviations This Recommendation uses
42、the following abbreviations: ASE ASN. 1 ATP BCD CCBS CCNR CCSS CIC CUG DNIC DPC DSS 1 ext. FDM GAT GUG GVNS HTR IA5 INAP INN ISC ISDN LFB LSB MCID MLPP MNIC MSB NI NI NRN OIE OPC OPSP Application Service Element Abstract Syntax Notation One Access Transport Parameter Binary Coded Decimal Completion
43、of Calls to Busy Subscriber Completion of Calls on no Reply Call Completion Service Set-up Circuit Identification Code Closed User Group Data Network Identification Code Destination Point Code Digital Subscriber Signalling System No. 1 Extension bit Frequency Division Multiplex Generic Addressing an
44、d Transport GVNS User Group Global Virtual Network Service Hard-To-Reach International Alphabet No. 5 Intelligent Network Application Protocol Internal Network Number International Switching Centre Integrated Services Digital Network Look-ahead for Busy (from MLPP Supplementary Service) Least Signif
45、icant Bit Malicious Call IDentification Multi-Level Precedence and Preemption Mobile Network Identification Code Most Significant Bit Network Identity Number Incomplete Network Routing Number Odd/Even Originating Point Code Origination Participation Service Provider PISN Private Integrated Services
46、Network QoR Query on Release ROA Recognized Operating Agency ROSE Remote Operations Service Element SCCP Signalling Connection Control Part SCF Service Control Function SLS Signalling Link Selection ST TAR Temporary Alternative Routing TCC Telephony Country Code TNRN Terminating Network Routing Numb
47、er UID User Interactive Dialogue VPN Virtual Private Network For further abbreviations, see ITU-T Recommendation Q.761. End of pulsing signal (Stop Sending) 1 General coding principles ISDN user part messages are carried on the signalling link by means of message signal units the format of which is
48、described in 2.2/Q.703. The format of and the codes used in the service information octet are described in 14.2Q.704. The service indicator for the ISDN user part is coded 0101. The signalling information field of each message signal unit containing an ISDN user part message consists of an integral
49、number of octets and encompasses the following parts (see Figure 1): a) routing label; b) circuit identification code; c) message type code; d) the mandatory fixed part; e) the mandatory variable part; Q the optional part, which may contain fixed length and variable length parameter fields. NOTE - The service information octet, the routing label and circuit identification code are not included in the SCCP user data parameter transferred between the ISDN user part and signalling connection control part. Routing label Circuit identification code Message tme code I I Mandatorv fi
