1、INTERNATIONAL TELECOMMUNICATION UNION ITU=T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Q.1901 Corrigendum 1 (04/2002) SERIES Q: SWITCHING AND SIGNALLING Specifications of signalling related to Bearer Independent Call Control (BICC) Bearer Independent Call Control protocol Corrigendum I ITU-T Re
2、commendation Q. 1901 (1 999) - Corrigendum 1 ITU-T Q-SERlES RECOMMENDATIONS SWITCEIING AND SIGNALLING SIGNALLING IN THE INTERNATIONAL MANUAL SERVICE FUNCTIONS AND INFORMATION FLOWS FOR SERVICES IN THE ISDN SPECIFICATIONS OF SIGNALLING SYSTEM No. 4 SPECIFICATIONS OF SIGNALLING SYSTEM No. 5 SPECIFICAT
3、IONS OF SIGNALLING SYSTEM No. 6 SPECIFICATIONS OF SIGNALLING SYSTEM R1 SPECIFICATIONS OF SIGNALLING SYSTEM R2 DIGITAL EXCHANGES INTERWORKING OF SIGNALLING SYSTEMS SPECIFICATIONS OF SIGNALLING SYSTEM No. 7 43 INTERFACE DIGITAL SUBSCRIBER SIGNALLING SYSTEM No. 1 PUBLIC LAND MOBILE NETWORK INTERWORKING
4、 WITH SATELLITE MOBILE SYSTEMS INTELLIGENT NETWORK INTERNATIONAL AUTOMATIC AND SEMI-AUTOMATIC WORKING CLAUSES APPLICABLE TO ITU-T STANDARD SYSTEMS Q.l-Q.3 Q.4-Q.59 Q.60-Q.99 Q.lOO-Q.119 Q. 120-Q. 139 4.140-4.199 4.250-4.309 4.310-4.399 4.400-4.499 Q.500-Q.599 Q.600-Q.699 4.700-4.799 Q.SOCrQ.849 Q.85
5、0-Q.999 Q. 1000-Q.1099 Q. 1 100-Q. 1 199 4.1200-4.1699 SIGNALLING REOUIREMENTS AND PROTOCOLS FOR IMT-2000 O. 1700-O. 1799 II . . . BROADBAND ISDN 4.2000-4.2999 For further details, please refer to the list of ITU-T Recommendations. ITU-T Recommendation Q.1901 Bearer Independent Call Control protocol
6、 Corrigendum 1 Summary This corrigendum describes the modifications to Q. 190 1 (12/99) in order to correct the table which shows the order of bit transfer, as packet networks do not necessarily have the order as MTP3. Source Corrigendum 1 to ITU-T Recommendation Q.1901 was prepared by ITU-T Study G
7、roup 11 (2001-2004) and approved under the WTSA Resolution 1 procedure on 13 April 2002. ITU-T Rec. Q.1901/Cor.l(04/2002) i FOREWORD The International Telecommunication Union TU) is the United Nations specialized agency in the field of telecommunications. The ITU Telecommunication Standardization Se
8、ctor (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 view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets eve
9、ry 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 Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-Ts purvie
10、w, the necessary standards are prepared on a collaborative basis with IS0 and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. INTELLECTUAL PROPERTY RIGHTS ITU draws attent
11、ion 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, whether asserted by ITU members or others
12、outside of the Recommendation development process. As of the date of approval of this Recommendation, IT had received 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 lat
13、est information and are therefore strongly urged to consult the TSB patent database. o ITU 2002 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. ii ITU-T Rec. Q.1901/Cor.l (04/2002) ITU-T Recommendation Q.1901 B
14、earer Independent Call Control protocol Corrigendum 1 1) Clause 9.5 Insert the following new clause before clause 1 O: 9.5 Order of Transmission Clause 1.9 of ITU-T Rec. 4.763 is replaced by the following : Since all the fields consist of an integral number of octets, the formats are presented as a
15、stack of octets. The first octet transmitted is the one shown at the top of the stack and the last is the one at the bottom (see Figure 4-UQ.1901). Unless otherwise indicated, within each octet and subfield, the bits are transmitted with the least significant bit first. I ITU-T Rec. Q.1901/Cor.l(04/
16、2002) 1 MSB LSB I Routine label Pointer to parameter M Circuit identification code Mandatory parameter A .-* a Mandatory parameter F Length indicator of parameter M Parameter M II Length indicator of parameter P Parameter P I Parameter X I Parameter name = Z I Lend indicator of narameter Z I Paramet
17、er Z End of optional parameters Order of octet 1 transmission Mandatory fixed part I Mandatory variable part I 7 Optional TI 1 1 1588O-OZ Figure 4-UQ.1901- General format overview 2 ITU-T Rec. Q.1901/Cor.l(04/2002) SERIES OF ITU-T RECOMMENDATIONS Series A Series B Series C Series D Series E Series F
18、 Series G Series H Series I Series J Series K Series L Series M Series N Series O Series P Series Q Series R Series S Series T Series U Series V Series X Series Y Series Z Organization of the work of ITU-T Means of expression: definitions, symbols, classification General telecommunication statistics
19、 General tariff principles Overall network operation, telephone service, service operation and human factors Non-telephone telecommunication services Transmission systems and media, digital systems and networks Audiovisual and multimedia systems Integrated services digital network Cable networks and
20、 transmission of television, sound programme and other multimedia signals Protection against interference Construction, installation and protection of cables and other elements of outside plant TMN and network maintenance: international transmission systems, telephone circuits, telegraphy, facsimile
21、 and leased circuits Maintenance: international sound programme and television transmission circuits Specifications of measuring equipment Telephone transmission quality, telephone installations, local line networks Switching and signalling Telegraph transmission Telegraph services terminal equipmen
22、t Terminals for telematic services Telegraph switching Data communication over the telephone network Data networks and open system communications Global information infrastructure and Internet protocol aspects Languages and general software aspects for telecommunication systems Printed in Switzerland Geneva, 2002
