1、 International Telecommunication Union ITU-T Q.1950TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Amendment 1(01/2006) SERIES Q: SWITCHING AND SIGNALLING Specifications of signalling related to Bearer Independent Call Control (BICC) Bearer independent call bearer control protocol Amendment 1: New A
2、nnex G Call bearer control International Emergency Preference Scheme ITU-T Recommendation Q.1950 (2002) Amendment 1ITU-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 IN
3、FORMATION 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 SIGNALLING SYSTEM No. 7 Q.700Q
4、.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 SPECIFICATIONS OF SIGNAL
5、LING 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.1950 (2002)/Amd.1 (01/2006) i ITU-T Recommendation Q.1950 Bearer independent call bearer control protocol Amendment 1 N
6、ew Annex G Call bearer control International Emergency Preference Scheme Summary This amendment contains the procedures, formats and codes with regard to the Call Bearer Control function to support the International Emergency Preference Scheme (IEPS), which is specified in ITU-T Rec. E.106, in Beare
7、r Independent Call Control (BICC) based networks. Source Amendment 1 to ITU-T Recommendation Q.1950 (2002) 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.1950 (2002)/Amd.1 (01/2006) FOREWORD The International Telecommunicati
8、on 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 Recommendations on them with a vie
9、w 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 approval of ITU-T Recommendat
10、ions 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 “Administration“ is used for concisen
11、ess 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 with the Recommendation
12、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 required of any party. INTEL
13、LECTUAL 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 Intellectual Property Rights, wh
14、ether 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. However, implementors are
15、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. ITU-T Rec. Q.1950 (2002
16、)/Amd.1 (01/2006) iii CONTENTS Page G.1 Introduction 1 G.2 References 1 G.3 Definitions 1 G.4 Abbreviations . 1 G.5 Definition of signalling flow objects 1 G.6 Emergency service capability set . 1 G.7 CBC procedures Call-related. 1 G.8 Formats and codes 2 ITU-T Rec. Q.1950 (2002)/Amd.1 (01/2006) 1 I
17、TU-T Recommendation Q.1950 Bearer independent call bearer control protocol Amendment 1 New Annex G Call bearer control International Emergency Preference Scheme G.1 Introduction This annex describes the enhancements to the Q.1950 Call Bearer Control interface enabling the CSF to indicate to a BIWF t
18、hat a particular context/call is being used for the International Emergency Preference Scheme. G.2 References G.2.1 Normative References ITU-T Recommendation E.106 (2003), International Emergency Preference Scheme (IEPS) for disaster relief operations. ITU-T Recommendation H.248.1 (2005), Gateway co
19、ntrol protocol: Version 3. G.2.2 Informative References G.3 Definitions G.4 Abbreviations IEPS International Emergency Preference Scheme G.5 Definition of signalling flow objects The following object is the signalling object to be carried by the commands in the transactions. 1) IEPS indicator: Indic
20、ates that the terminations and bearer connections in the specified context are associated with the features and techniques of ITU-T Rec. E.106 to be achieved. G.6 Emergency service capability set As per clause 6. G.7 CBC procedures Call-related This clause contains the Call-Related procedures for IE
21、PS when used in conjunction with Q.1950. G.7.1 CSM transactions The following transaction is used to indicate that a procedure is to be initiated by the CSM. The transaction leads to commands being sent across the CBC interface. See Table G.1. 2 ITU-T Rec. Q.1950 (2002)/Amd.1 (01/2006) Table G.1/Q.1
22、950 Call-related CSM originated transactions on the CBC interface Transaction Description IEPS_Indication This transaction is used to indicate to the BIWF that the IEPS service is used and IEPS handling should apply to the applicable context. G.7.1.1 IEPS_Indication When the transaction “IEPS_Indica
23、tion“ is required the following procedure is initiated. _ An ADD.req, MOD.req or MOV.req command is sent with the following information. 1 ADD.req/MOD.req/MOV.req (., IEPS_Indication) CSM to BIWF Address Information Control information Bearer information As per flow (1) 7.1.1/Q.1950 Prepare_BNC_Noti
24、fy or As per flow (1) 7.1.2/Q.1950 Establish_BNC_Notify As per flow (1) 7.1.1/Q.1950 Prepare_BNC_Notify With the following additions: If Context Requested & IEPS Call: IEPS Indicator OR: As per flow (1) 7.1.2/Q.1950 Establish_BNC_Notify With the following additions: If Context is NOT provided & IEPS
25、 Call: IEPS Indicator As per flow (1) 7.1.1/Q.1950 Prepare_BNC_Notify or As per flow (1) 7.1.2/Q.1950 Establish_BNC_Notify Upon reception of the command, the BIWF shall: If the IEPS Indicator is present, apply preferential handling according to E.106, with respect to all resources associated with th
26、e specified context. Mapping to any priority values present in the relevant bearer control protocol, including the application of pre-emption, is out of scope of this Recommendation. Apply the procedures of 7.1.1/Q.1950 Prepare_BNC_Notify or 7.1.2/Q.1950 Establish_BNC_Notify as applicable. _ Upon co
27、mpletion of processing command (1) an ADD.resp, MOD.resp or MOV.resp command (2) is sent. 2 ADD.resp/MOD.resp/MOV.resp BIWF to CSM Address Information Control information Bearer information As per flow (1) 7.1.1/Q.1950 Prepare_BNC_Notify or As per flow (1) 7.1.2/Q.1950 Establish_BNC_Notify As per fl
28、ow (1) 7.1.1/Q.1950 Prepare_BNC_Notify or As per flow (1) 7.1.2/Q.1950 Establish_BNC_Notify As per flow (1) 7.1.1/Q.1950 Prepare_BNC_Notify or As per flow (1) 7.1.2/Q.1950 Establish_BNC_Notify G.7.2 BIWF transactions G.8 Formats and codes This clause outlines the encoding of the IEPS when used with
29、the CBC protocol. ITU-T Rec. Q.1950 (2002)/Amd.1 (01/2006) 3 G.8.1 Formats and codes General As per 10.1. G.8.2 Formats and codes Commands As per 10.2. G.8.3 Formats and codes Signalling objects See Table G.2. Table G.2/Q.1950 CBC signalling object to H.248.1 coding mapping table CBC signalling obje
30、ct H.248.1 descriptor H.248.1 coding IEPS Indicator NA 6.1.1/H.248.1 IEPS Indicator encoded as per Annexes A/H.248.1 (IEPS Call Ind) or B/H.248.1 (IEPS Value) context attribute. Printed in Switzerland Geneva, 2006 SERIES OF ITU-T RECOMMENDATIONS Series A Organization of the work of ITU-T Series D Ge
31、neral 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 systems and networks Series H Audiovisual and multimedia systems Series I Integrated s
32、ervices 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 cables and other elements of outside plant Series M Telecommunication management
33、, including TMN and network maintenance 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 signalling Seri
34、es 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, 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
