1、 INTERNATIONAL TELECOMMUNICATION UNION ITU-T Q.1902.2TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Amendment 2(04/2004) SERIES Q: SWITCHING AND SIGNALLING Specifications of signalling related to Bearer Independent Call Control (BICC) Bearer Independent Call Control protocol (Capability Set 2) and
2、Signalling System No. 7 ISDN user part: General functions of messages and parameters Amendment 2 ITU-T Recommendation Q.1902.2 (2001) Amendment 2ITU-T Q-SERIES RECOMMENDATIONS SWITCHING AND SIGNALLING SIGNALLING IN THE INTERNATIONAL MANUAL SERVICE Q.1Q.3 INTERNATIONAL AUTOMATIC AND SEMI-AUTOMATIC WO
3、RKING Q.4Q.59 FUNCTIONS AND INFORMATION FLOWS FOR SERVICES IN THE ISDN Q.60Q.99 CLAUSES APPLICABLE TO ITU-T STANDARD SYSTEMS Q.100Q.119 SPECIFICATIONS OF SIGNALLING SYSTEMS No. 4, 5, 6, R1 AND R2 Q.120Q.499 DIGITAL EXCHANGES Q.500Q.599 INTERWORKING OF SIGNALLING SYSTEMS Q.600Q.699 SPECIFICATIONS OF
4、SIGNALLING SYSTEM No. 7 Q.700Q.799 Q3 INTERFACE Q.800Q.849 DIGITAL SUBSCRIBER SIGNALLING SYSTEM No. 1 Q.850Q.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
5、.1799 SPECIFICATIONS OF SIGNALLING RELATED TO BEARER INDEPENDENT CALL CONTROL (BICC) Q.1900Q.1999 BROADBAND ISDN Q.2000Q.2999 For further details, please refer to the list of ITU-T Recommendations. ITU-T Rec. Q.1902.2 (2001)/Amd.2 (04/2004) i ITU-T Recommendation Q.1902.2 Bearer Independent Call Con
6、trol protocol (Capability Set 2) and Signalling System No. 7 ISDN user part: General functions of messages and parameters Amendment 2 Summary This Amendment 2 to the BICC Specification Q.1902.2 (07/2001) contains modifications to clauses 6 and 7. NOTE Previous amendments to this Recommendation still
7、 apply and need to be taken into account when applying this amendment. Source Amendment 2 to ITU-T Recommendation Q.1902.2 (2001) was approved on 13 April 2004 by ITU-T Study Group 11 (2001-2004) under the ITU-T Recommendation A.8 procedure. ii ITU-T Rec. Q.1902.2 (2001)/Amd.2 (04/2004) FOREWORD The
8、 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 Reco
9、mmendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), 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
10、 approval of ITU-T Recommendations is covered by the procedure laid down in WTSA 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 “Admini
11、stration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory provisions (to ensure e.g. interoperability or applicability) and compl
12、iance with the Recommendation is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“ and the negative equivalents are used to express requirements. The use of such words does not suggest that compliance with the Recommendation i
13、s required of any party. 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, validity or applicability of claimed In
14、tellectual 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 received notice of intellectual property, protected by patents, which may be required to implement this Recommendation.
15、However, implementors are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database. ITU 2004 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of IT
16、U. ITU-T Rec. Q.1902.2 (2001)/Amd.2 (04/2004) 1 ITU-T Recommendation Q.1902.2 Bearer Independent Call Control protocol (Capability Set 2) and Signalling System No. 7 ISDN user part: General functions of messages and parameters Amendment 2 1) Clause 6 Signalling parameters Modify clause 6 as follows
17、and renumber all subsequent subclauses accordingly: . 6.4 automatic congestion level: Information sent to the node to indicate that a particular level of congestion exists at the sending node. 6.5 automatic re-routing: Information sent in either direction giving information about automatic re-routin
18、g of a call. 6.56 backward call indicators: Information relating to the characteristics of the connection, signalling path and called party sent in the backward direction. . 2) Clause 7 Parameter information Modify clause 7 as follows and renumber all subsequent subclauses accordingly: . 7.151 relea
19、se call indicator: Information sent to inform another node to release the call or not, by compatibility reasons, if the related message or parameter is unrecognized. 7.152 re-routing counter: Information indicating the number of invocations of re-routing that a call has undergone. 7.153 re-routing i
20、nhibit indicator: Information indicating whether the call is allowed to be re-routed. 7.154 re-routing reason: Information indicating the reason why automatic re-routing has been invoked. 7.152155 return to invoking exchange call identifier: Information used by the return to invoking node function t
21、o identify a call. Printed in Switzerland Geneva, 2004 SERIES OF ITU-T RECOMMENDATIONS Series A Organization of the work of ITU-T Series B Means of expression: definitions, symbols, classification Series C General telecommunication statistics Series D General tariff principles Series E Overall netwo
22、rk operation, telephone service, service operation and human factors Series F Non-telephone telecommunication services Series G Transmission systems and media, digital systems and networks Series H Audiovisual and multimedia systems Series I Integrated services digital network Series J Cable network
23、s and transmission of television, sound programme and other multimedia signals Series K Protection against interference Series L Construction, installation and protection of cables and other elements of outside plant Series M TMN and network maintenance: international transmission systems, telephone
24、 circuits, telegraphy, facsimile and leased circuits Series N Maintenance: international sound programme and television transmission circuits Series O Specifications of measuring equipment Series P Telephone transmission quality, telephone installations, local line networks Series Q Switching and si
25、gnalling Series R Telegraph transmission Series S Telegraph services terminal equipment Series T Terminals for telematic services Series U Telegraph switching Series V Data communication over the telephone network Series X Data networks and open system communications Series Y Global information infrastructure, Internet protocol aspects and Next Generation Networks Series Z Languages and general software aspects for telecommunication systems
