1、 International Telecommunication Union ITU-T Q.1902.1TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Amendment 2(01/2006) SERIES Q: SWITCHING AND SIGNALLING Specifications of signalling related to Bearer Independent Call Control (BICC) Bearer Independent Call Control protocol (Capability Set 2): Fun
2、ctional description Amendment 2: Support for the International Emergency Preference Scheme ITU-T Recommendation Q.1902.1 (2001) Amendment 2 ITU-T Q-SERIES RECOMMENDATIONS SWITCHING AND SIGNALLING SIGNALLING IN THE INTERNATIONAL MANUAL SERVICE Q.1Q.3 INTERNATIONAL AUTOMATIC AND SEMI-AUTOMATIC WORKING
3、 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 SIGNA
4、LLING 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.1799
5、 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.1902.1 (2001)/Amd.2 (01/2006) i ITU-T Recommendation Q.1902.1 Bearer Independent Call Control
6、protocol (Capability Set 2): Functional description Amendment 2 Support for the International Emergency Preference Scheme Summary This amendment was produced to meet the need for the implementation of the International Emergency Preference Scheme (IEPS) for disaster recovery operations as specified
7、in ITU-T Rec. E.106. It contains the modifications to ITU-T Rec. Q.1902.1 (2001) in order to accommodate these needs. This amendment should be read in conjunction with Amendment 3 to ITU-T Rec. Q.1902.2, Amendment 3 to ITU-T Rec. Q.1902.3, and Amendment 3 to ITU-T Rec. Q.1902.4. This amendment incor
8、porates Amendment 1 to ITU-T Rec. Q.1902.1 and provides enhancements. Source Amendment 2 to ITU-T Recommendation Q.1902.1 (2001) was approved on 27 January 2006 by ITU-T Study Group 11 (2005-2008) under the WTSA Resolution 1 procedure. ii ITU-T Rec. Q.1902.1 (2001)/Amd.2 (01/2006) FOREWORD The Inter
9、national 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 Recommenda
10、tions 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 appro
11、val 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 “Administrati
12、on“ 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 compliance
13、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 is requ
14、ired 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 Intellec
15、tual 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 required to implement this Recommendation. Ho
16、wever, implementors are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database. ITU 2006 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU.
17、 ITU-T Rec. Q.1902.1 (2001)/Amd.2 (01/2006) iii CONTENTS Page 1) Clause 1 Scope. 1 2) Clause 2 References. 1 3) Clause 3 Definitions 1 4) Clause 8 Capabilities supported. 1 5) New Appendix II 2 ITU-T Rec. Q.1902.1 (2001)/Amd.2 (01/2006) 1 ITU-T Recommendation Q.1902.1 Bearer Independent Call Control
18、 protocol (Capability Set 2): Functional description Amendment 2 Support for the International Emergency Preference Scheme 1) Clause 1 Scope Insert the following paragraph at the end of this clause: The International Emergency Preference Scheme is described in ITU-T Rec. E.106, International Emergen
19、cy Preference Scheme (IEPS) for Disaster Relief Operations 64. The associated BICC general functions of messages and parameters, formats and codes, and procedures are to be found in ITU-T Recs Q.1902.2 14, Q.1902.3 15, Q.1902.4 16 and Q.1950 61. 2) Clause 2 References Add the following new reference
20、s: 64 ITU-T Recommendation E.106 (2003), International Emergency Preference Scheme (IEPS) for disaster relief operations. 65 ITU-T Recommendation Q.767 (1991), Application of the ISDN User Part of CCITT signalling system No. 7 for international ISDN interconnections. 3) Clause 3 Definitions Insert t
21、he following new terms alphabetically and renumber the subsequent terms accordingly: 3.13 ISUP92: 1993 publication of ISUP Recommendations. 3.14 ISUP97: 1997 publication of ISUP Recommendations. 3.15 ISUP2000: 1999 publication of ISUP Recommendations. 4) Clause 8 Capabilities supported Insert the fo
22、llowing new entry into Table 1/Q.1902.1: Table 1/Q.1902.1 Signalling capabilities for basic call Function/service National use International International Emergency Preference Scheme (Note 4) NOTE 4 The procedures specified here for the international signalling network can be applied in national net
23、works also. It is essential that the call is set up in the originating and destination national networks with utmost priority. 2 ITU-T Rec. Q.1902.1 (2001)/Amd.2 (01/2006) 5) New Appendix II Insert the following new Appendix II: Appendix II BICC enhancements to support IEPS II.1 Introduction There i
24、s an urgent need for enhancements to BICC implementations in support of the International Emergency Preference Scheme (IEPS) as specified in ITU-T Rec. E.106 64. The intent is to increase the probability of call completion in congested network situations for authorized callers. These enhancements on
25、ly apply to the international interface. Administrations, and network operators are encouraged to support these, or similar capabilities, in their domestic networks. II.2 Scope This appendix provides an overview of the signalling needed to support IEPS. The BICC enhancements to the other ITU-T Recom
26、mendations of this series relating to basic call are provided in corresponding amendments to ITU-T Recs Q.1902.2, Q.1902.3, and Q.1902.4. To provide a viable IEPS capability, it is required to implement all the amendments to the ITU-T Recommendations of this series. II.3 Approach The implementation
27、of IEPS support may take place in a phased approach in a forward compatible manner. This phased approach facilitates and expedites the introduction of IEPS. The phases are: a) The minimum implementation relies on the transfer in BICC of a specific IEPS call marking in the forward direction for prefe
28、rential call set-up in the international network. In an international exchange, any call attempt with this IEPS call marking shall bypass restrictive call handling procedures (for example, network management controls as specified in ITU-T Rec. E.412 35). b) An improved implementation provides the ge
29、neration of an early ACM. The aim of this mechanism is to reduce call set-up failures due to timer expiration caused by, for example, queuing delays for trunk allocation on congested routes. c) An additional information transfer mechanism, based on a new parameter in conjunction with the IEPS call m
30、arking, is used to facilitate enhancements of IEPS in the areas of identification and priority levels. II.4 BICC versions and ISUP protocols As the BICC CS-2 specifications (14, 15, 16 and 61) are published in different ITU-T Recommendations, these amendments to BICC provide all necessary informatio
31、n for support of IEPS in international exchanges. The support of IEPS by BICC CS-1 13 is covered by the amendments to the ISUP2000 series of Recommendations 6, 7, 8 and 9. ITU-T Rec. Q.767 65 and the ISUP2000 series of Recommendations 6, 7, 8 and 9 are also being amended in support of IEPS. IEPS can
32、 be implemented on the previous versions ISUP92 and ISUP97 by the identical amendments made for the ISUP2000 series of Recommendations. Printed in Switzerland Geneva, 2006 SERIES OF ITU-T RECOMMENDATIONS Series A Organization of the work of ITU-T Series D General tariff principles Series E Overall n
33、etwork 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 net
34、works 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 Telecommunication management, including TMN and network maintenance Se
35、ries 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 signalling Series R Telegraph transmission Series S Teleg
36、raph 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, open system communications and security Series Y Global information infrastructure, Internet protocol aspects and next-generation networks Series Z Languages and general software aspects for telecommunication systems
