1、INTERNATIONAL TELECOMMUNICATION UNION ITU=T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Q.850 Addendum 1 (06/2 O O O) SERIES Q: SWITCHING AND SIGNALLING Digital subscriber Signalling System No. 1 - General Usage of cause and location in the Digital Subscriber Signalling System No. 1 and the Sign
2、alling System No. 7 ISDN User part Addendum 1 ITU-T Recommendation Q.850 - Addendum 1 (Formerly CCITT Recommendation) ITU-T Q-SERIES RECOMMENDATIONS SWITCHING AND SIGNALLING SIGNALLING IN THE INTERNATIONAL MANUAL SERVICE INTERNATIONAL AUTOMATIC AND SEMI-AUTOMATIC WORKING FUNCTIONS AND INFORMATION FL
3、OWS FOR SERVICES IN THE ISDN SPECIFICATIONS OF SIGNALLING SYSTEMS No. 4 AND No. 5 SPECIFICATIONS OF SIGNALLING SYSTEM No. 6 SPECIFICATIONS OF SIGNALLING SYSTEM R1 SPECIFICATIONS OF SIGNALLING SYSTEM R DIGITAL EXCHANGES INTERWOFUUNG OF SIGNALLING SYSTEMS SPECIFICATIONS OF SIGNALLING SYSTEM No. 7 43 I
4、NTERFACE CLAUSES APPLICABLE TO ITU-T STANDARD SYSTEMS SCRIBER SIGNALLING SYSTEM N - - .- Data link layer Network layer User-network management Stage 3 description for supplementary services using DSS1 PUBLIC LAND MOBILE NETWORK INTERWORKING WITH SATELLITE MOBILE SYSTEMS INTELLIGENT NETWORK BROADBAND
5、 ISDN SIGNALLING REQUIREMENTS AND PROTOCOLS FOR IMT-2000 Q. 1-4.3 4.4-4.59 4.60-4.99 Q.100-Q.119 Q. 120-4.249 4.250-4.309 4.3 10-4.399 4.400-4.499 Q.500-Q.599 4.600-4.699 4.700-4.799 Q.800-Q.849 Q.850-Q.999 4.920-4.929 4.930-4.939 4.940-4.949 Q.950-Q.999 Q. 1000-Q. 1099 Q.1100-Q.1199 Q. 1 200-4.1 69
6、9 Q. 1700-4.1799 Q.2000-Q.2999 For further details, please refer to the list of ITU-TRecommendations. ITU-T Recommendation Q.850 Usage of cause and location in the Digital Subscriber Signalling System No. 1 and the Signalling System No. 7 ISDN User part ADDENDUM 1 Summary This addendum to ITU-T Q.85
7、0 (05/98) specifies a new cause value introduced in Annex UQ.769.1, for the query on release capability in number portability. Source Addendum 1 to ITU-T Recommendation Q.850 was prepared by ITU-T Study Group 11 (1 997-2000) and approved under the WTSC Resolution 1 procedure on 15 June 2000. FOREWOR
8、D 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. ITU-T is responsible for studying technical, operating and tariff questions and issuing
9、 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 turn, produce Recommendations on these topi
10、cs. 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 In this Recommendation, the expression
11、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 involve the use of a claimed Intellectual
12、 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 Recommendation, ITU had not received noti
13、ce 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. o ITU 2001 All rights reserved. No pa
14、rt 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. 91 .I c) iu W I u 3 En om -al .- 3% ,ov al & zz SERIES OF ITU-T RECOMMENDATIONS Series A Series B Series C Series
15、D Series E Series F Series G Series H Series I Series J Series K Series L Series M Series N Series O Series P Series Q Series R Series S Series T Series U Series V Series X Series Y Series Z Organization of the work of ITU-T Means of expression: definitions, symbols, classification General telecommu
16、nication statistics General tariff principles Overall network operation, telephone service, service operation and human factors Non-telephone telecommunication services Transmission systems and media, digital systems and networks Audiovisual and multimedia systems Integrated services digital network
17、 Transmission of television, sound programme and other multimedia signals Protection against interference Construction, installation and protection of cables and other elements of outside plant TMN and network maintenance: international transmission systems, telephone circuits, telegraphy, facsimile
18、 and leased circuits Maintenance: international sound programme and television transmission circuits Specifications of measuring equipment Telephone transmission quality, telephone installations, local line networks Switching and signalling Tele graph transmission Telegraph services terminal equipment Terminals for telematic services Telegraph switching Data communication over the telephone network Data networks and open system communications Global information infrastructure and Internet protocol aspects Languages and general software aspects for telecommunication systems
