1、 INTERNATIONAL TELECOMMUNICATION UNION ITU-T Q.764TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Amendment 2(12/2002) SERIES Q: SWITCHING AND SIGNALLING Specifications of Signalling System No. 7 ISDN user partSignalling System No. 7 ISDN User Part signalling procedures Amendment 2: Support for the
2、International Emergency Preference Scheme ITU-T Recommendation Q.764 (1999) 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 Q.4Q.59 FUNCTIONS AND INFORMATION FLOWS FOR SERVICE
3、S 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 OF SIGNALLING SYSTEM R1 Q.310Q.399 SPECIFICATIO
4、NS 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 (SCCP) Q.711Q.719 Telephone user part (TUP) Q.
5、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 DIGITAL SUBSCRIBER SIGNALLING SYSTEM No. 1 Q.85
6、0Q.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 INDEPENDENT CALL CONTROL (BICC) Q.1900Q.1999 BROADBAN
7、D ISDN Q.2000Q.2999 For further details, please refer to the list of ITU-T Recommendations. ITU-T Rec. Q.764 (1999)/Amd.2 (12/2002) i ITU-T Recommendation Q.764 Signalling System No. 7 ISDN User Part signalling procedures Amendment 2 Support for the International Emergency Preference Scheme Summary
8、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 to ITU-T Rec. Q.764 (1999) in order to accommodate these needs. This amendment should be read
9、 in connection with the related amendments to ITU-T Recs Q.761, Q.762, and Q.763. Source Amendment 2 to ITU-T Recommendation Q.764 (1999) 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.764 (1999)/Amd.2 (12/2002
10、) 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. ITU-T is responsible for studying technical, operating and tariff questions an
11、d issuing Recommendations 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 the
12、se topics. The 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 expr
13、ession “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 Intel
14、lectual 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 receiv
15、ed 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. ITU 2003 All rights reserved.
16、No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. ITU-T Rec. Q.764 (1999)/Amd.2 (12/2002) iii CONTENTS Page 1) Clause 1.2 References 1 2) Clause 1.4 Abbreviations. 1 3) Clause 2.1.1.3 Actions required at an outgoing international exc
17、hange . 1 4) Clause 2.1.1.4 Actions required at an intermediate international exchange 1 5) Clause 2.1.1.5 Actions required at an incoming international exchange. 2 6) Clause 2.1.2.3 Actions required at an outgoing international exchange . 2 7) Clause 2.1.2.4 Actions required at an intermediate inte
18、rnational exchange 3 8) Clause 2.1.2.5 Actions required at an incoming international exchange. 3 ITU-T Rec. Q.764 (1999)/Amd.2 (12/2002) 1 ITU-T Recommendation Q.764 Signalling System No. 7 ISDN User Part signalling procedures Amendment 2 Support for the International Emergency Preference Scheme 1)
19、Clause 1.2 References Insert the following reference: 28 ITU-T Recommendation E.106 (2000), Description of an international emergency preference scheme (IEPS). 2) Clause 1.4 Abbreviations Add the following new abbreviations alphabetically: CPC Calling Partys Category IEPS International Emergency Pre
20、ference Scheme 3) Clause 2.1.1.3 Actions required at an outgoing international exchange Add the following: e) International Emergency 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
21、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 Call Gapping, ISUP Signalling Congestion Control, Automatic Congestion Control, Hard-to-Reach procedure) are
22、 not applied to this call. If routing procedures fail to find an outgoing circuit, the call is queued and shall take precedence over any other normal call attempts. Optionally, if queuing occurs, an early ACM (called party status set to “no indication“) with the inclusion of the generic notification
23、 parameter set to “call completion delay“ may be returned to the originating exchange. However, if the incoming IAM had requested continuity check (either on this circuit or a previous circuit), the early ACM (no indication) shall not be sent until a successful continuity indication has been receive
24、d. 4) Clause 2.1.1.4 Actions required at an intermediate international exchange Add the following: e) International Emergency Preference Scheme If an intermediate international exchange receives a call with CPC set to IEPS, the call establishment proceeds with priority. The call is established with
25、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, Hard-to-Reach procedure) are not applied to this call. 2 ITU-T Rec. Q.764 (1999)/Amd.2 (12/2002) If routing pr
26、ocedures fail to find an outgoing circuit, the call is queued and shall take precedence over any other normal call attempts. Optionally, if queuing occurs, an early ACM (called party status set to “no indication“) with the inclusion of the generic notification parameter set to “call completion delay
27、“ may be returned to the originating exchange. However, if the incoming IAM had requested continuity check (either on this circuit or a previous circuit), the early ACM (no indication) shall not be sent until a successful continuity indication has been received. 5) Clause 2.1.1.5 Actions required at
28、 an incoming international exchange Add the following: e) International Emergency Preference Scheme If an incoming 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 or national spe
29、cific 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, Hard-to-Reach procedure) are not applied to this call. If routing procedures fail to find an outgoing
30、 circuit, the call is queued and shall take precedence over any other normal call attempts. Optionally, if queuing occurs, an early ACM (called party status set to “no indication“) with the inclusion of the generic notification parameter set to “call completion delay“ may be returned to the originat
31、ing exchange. However, if the incoming IAM had requested continuity check (either on this circuit or a previous circuit), the early ACM (no indication) shall not be sent until a successful continuity indication has been received. 6) Clause 2.1.2.3 Actions required at an outgoing international exchan
32、ge Add the following: e) International Emergency 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
33、 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, Hard-to-Reach procedure) are not applied to this call. If routing procedures fail to find an outgoing circuit, th
34、e call is queued and shall take precedence over any other normal call attempts. Optionally, if queuing occurs, an early ACM (called party status set to “no indication“) with the inclusion of the generic notification parameter set to “call completion delay“ may be returned to the originating exchange
35、. However, if the incoming IAM had requested continuity check (either on this circuit or a previous circuit), the early ACM (no indication) shall not be sent until a successful continuity indication has been received. ITU-T Rec. Q.764 (1999)/Amd.2 (12/2002) 3 7) Clause 2.1.2.4 Actions required at an
36、 intermediate international exchange Add the following: e) International Emergency Preference Scheme 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 the out
37、going IAM. Restrictive network management controls (e.g. Automatic Call Gapping, ISUP Signalling Congestion Control, Automatic Congestion Control, Hard-to-Reach procedure) are not applied to this call. If routing procedures fail to find an outgoing circuit, the call is queued and shall take preceden
38、ce over any other normal call attempts. Optionally, if queuing occurs, an early ACM (called party status set to “no indication“) with the inclusion of the generic notification parameter set to “call completion delay“ may be returned to the originating exchange. However, if the incoming IAM had reque
39、sted continuity check (either on this circuit or a previous circuit), the early ACM (no indication) shall not be sent until a successful continuity indication has been received. 8) Clause 2.1.2.5 Actions required at an incoming international exchange Add the following: e) International Emergency Pre
40、ference Scheme If an incoming 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 or national specific information for IEPS call treatment in the outgoing IAM. Restrictive network ma
41、nagement controls (e.g. Automatic Call Gapping, ISUP Signalling Congestion Control, Automatic Congestion Control, Hard-to-Reach procedure) are not applied to this call. If routing procedures fail to find an outgoing circuit, the call is queued and shall take precedence over any other normal call att
42、empts. Optionally, if queuing occurs, an early ACM (called party status set to “no indication“) with the inclusion of the generic notification parameter set to “call completion delay“ may be returned to the originating exchange. However, if the incoming IAM had requested continuity check (either on
43、this circuit or a previous circuit), the early ACM (no indication) shall not be sent until a successful continuity indication has been received. 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, s
44、ymbols, classification Series C General telecommunication statistics Series D General tariff principles Series E Overall network operation, telephone service, service operation and human factors Series F Non-telephone telecommunication services Series G Transmission systems and media, digital system
45、s and networks Series H Audiovisual and multimedia systems Series I Integrated services digital network Series J Cable networks and transmission of television, sound programme and other multimedia signals Series K Protection against interference Series L Construction, installation and protection of
46、cables and other elements of outside plant Series M TMN and network maintenance: international transmission systems, telephone circuits, telegraphy, facsimile and leased circuits Series N Maintenance: international sound programme and television transmission circuits Series O Specifications of measu
47、ring equipment Series P Telephone transmission quality, telephone installations, local line networks Series Q Switching and signalling 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
