1、 INTERNATIONAL TELECOMMUNICATION UNION ITU-T Q.767TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Amendment 1(12/2002) SERIES Q: SWITCHING AND SIGNALLING Specifications of Signalling System No. 7 ISDN user partApplication of the ISDN User Part of CCITT Signalling System No. 7 for international ISDN
2、interconnections Amendment 1: Support for the International Emergency Preference Scheme ITU-T Recommendation Q.767 (1991) Amendment 1 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.
3、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 SYSTEM No. 4 Q.120Q.139 SPECIFICATIONS OF SIGNALLING SYSTEM No. 5 Q.140Q.199 SPECIFICATIONS OF SIGNALLING SYSTEM No. 6 Q.250Q.309 SPECIFICATIONS O
4、F SIGNALLING SYSTEM R1 Q.310Q.399 SPECIFICATIONS OF SIGNALLING SYSTEM R2 Q.400Q.499 DIGITAL EXCHANGES Q.500Q.599 INTERWORKING OF SIGNALLING SYSTEMS Q.600Q.699 SPECIFICATIONS OF SIGNALLING SYSTEM No. 7 Q.700Q.799 General Q.700 Message transfer part (MTP) Q.701Q.709 Signalling connection control part
5、(SCCP) Q.711Q.719 Telephone user part (TUP) Q.720Q.729 ISDN supplementary services Q.730Q.739 Data user part Q.740Q.749 Signalling System No. 7 management Q.750Q.759 ISDN user part Q.760Q.769 Transaction capabilities application part Q.770Q.779 Test specification Q.780Q.799 Q3 INTERFACE Q.800Q.849 D
6、IGITAL 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 SPECIFICATIONS OF SIGNALLING RELATED TO BEARER INDEPEN
7、DENT 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.767 (1991)/Amd.1 (12/2002) i ITU-T Recommendation Q.767 Application of the ISDN User Part of CCITT Signalling System No. 7 for international ISDN int
8、erconnections Amendment 1 Support for the International Emergency Preference Scheme Summary This amendment was produced to meet the urgent need for the implementation of the International Emergency Preference Scheme (IEPS) as specified in ITU-T Rec. E.106. This amendment contains the modifications t
9、o ITU-T Rec. Q.767 (1991) in order to accommodate these needs. Source Amendment 1 to ITU-T Recommendation Q.767 (1991) was prepared by ITU-T Study Group 11 (2001-2004) and approved under the WTSA Resolution 1 procedure on 29 December 2002. ii ITU-T Rec. Q.767 (1991)/Amd.1 (12/2002) FOREWORD The Inte
10、rnational 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 Recommend
11、ations 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 appr
12、oval 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 “Administrat
13、ion“ 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 Property Ri
14、ght. 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 notice of intell
15、ectual 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. ITU 2003 All rights reserved. No part of this pub
16、lication may be reproduced, by any means whatsoever, without the prior written permission of ITU. ITU-T Rec. Q.767 (1991)/Amd.1 (12/2002) 1 ITU-T Recommendation Q.767 Application of the ISDN User Part of CCITT Signalling System No. 7 for international ISDN interconnections Amendment 1 Support for th
17、e International Emergency Preference Scheme 1) Introduction Add the following paragraph to the end of this clause: The implementation of ITU-T Rec. Q.767 does not prevent the enhancement of the functions of the exchange to include a priority handling mechanism for the International Emergency Prefere
18、nce Scheme (IEPS) calls (see e.g. ITU-T Rec. Q.764). 2) Clause C.3.9 Calling partys category Amend the following: 00001110 SpareIEPS Call Marking for Preferential call set-up 3) Clause D.2.1.1.2 Actions required at an intermediate exchange Add the following new paragraph: d) International Emergency
19、Preference Scheme If an outgoing international exchange receives information from the national network that the call is to be treated as an IEPS call (e.g. CPC value of IEPS), call establishment proceeds with priority. The call is established with the CPC set as IEPS call marking in the outgoing IAM
20、. Restrictive network management controls (e.g. Automatic Call Gapping, ISUP Signalling Congestion Control, Automatic Congestion Control) are not applied to this call. If an intermediate international exchange receives a call with CPC set to IEPS, the call establishment proceeds with priority. The c
21、all is established with the CPC set as IEPS call marking in the outgoing IAM. Restrictive network management controls (e.g. Automatic Call Gapping, ISUP Signalling Congestion Control, Automatic Congestion Control) are not applied to this call. If an incoming international exchange receives a call wi
22、th CPC set to IEPS, the call establishment proceeds with priority. The call is established with the CPC set as IEPS call marking or national specific information for IEPS call treatment in the outgoing IAM. Restrictive network management controls (e.g. Automatic Call Gapping, ISUP Signalling Congest
23、ion Control, Automatic Congestion Control) are not applied to this call. 2 ITU-T Rec. Q.767 (1991)/Amd.1 (12/2002) 4) Clause D.2.1.2.2 Actions required at an intermediate exchange Add the following new paragraph: d) International Emergency Preference Scheme If an outgoing international exchange rece
24、ives information from the national network that the call is to be treated as an IEPS call (e.g. CPC value of IEPS), call establishment proceeds with priority. The call is established with the CPC set as IEPS call marking in the outgoing IAM. Restrictive network management controls (e.g. Automatic Ca
25、ll Gapping, ISUP Signalling Congestion Control, Automatic Congestion Control) are not applied to this call. If an intermediate international exchange receives a call with CPC set to IEPS, the call establishment proceeds with priority. The call is established with the CPC set as IEPS call marking in
26、the outgoing IAM. Restrictive network management controls (e.g. Automatic Call Gapping, ISUP Signalling Congestion Control, Automatic Congestion Control) are not applied to this call. If an incoming international exchange receives a call with CPC set to IEPS, the call establishment proceeds with pri
27、ority. The call is established with the CPC set as IEPS call marking or national specific information for IEPS call treatment in the outgoing IAM. Restrictive network management controls (e.g. Automatic Call Gapping, ISUP Signalling Congestion Control, Automatic Congestion Control) are not applied t
28、o this call. Printed in Switzerland Geneva, 2003 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 network ope
29、ration, 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 networks and
30、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 circu
31、its, 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 signalli
32、ng 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 and Internet protocol aspects Series Z Languages and general software aspects for telecommunication systems
