1、- - STD.ITU-T RECMN Q-737.1-ENGL 1777 m 4b2571 OblfObBB T D INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Q.737.1 SERIES Q: SWITCHING AND SIGNALLING Specifications of Signalling System No. 7 - ISDN sup p lernen ta ry servi ces (06197) Stage 3 description
2、 for additional information transfer supplementary services using Signalling System No. 7: User-to-user signalling (UUS) ITU-T Recommendation Q.737.1 (Previously CCITT Recommendation) STD-ITU-T RECMN Q-737.1-ENGL 1777 = qBb2571 ObqOb87 725 Data user part Signalling System No. 7 management ISDN user
3、part Transaction capabilities application part Test specification Q3 interface General Data link layer Network layer User-network management Stage 3 description for supplementary services using DSS I DIGITAL SUBSCRIBER SIGNALLING SYSTEM No. 1 PUBLIC LAND MOBILE NETWORK INTERWORKING WITH SATELLITE MO
4、BILE SYSTEMS INTELLIGENT NETWORK , BROADBAND ISDN ITU-T Q-SERIES RECOMMENDATIONS SWITCHING AND SIGNALLING SIGNALLING IN THE INTERNATIONAL MANUAL SERVICE INTERNATIONAL AUTOMATIC AND SEMI-AUTOMATIC WORKING FUNCTIONS AND INFORMATION FLOWS FOR SERVICES IN THE ISDN SPECIFICATIONS OF SIGNALLING SYSTEMS No
5、. 4 AND No. 5 SPECIFICATIONS OF SIGNALLING SYSTEM No. 6 SPECIFICATIONS OF SIGNALLING SYSTEM RI SPECIFICATIONS OF SIGNALLING SYSTEM R2 DIGITAL EXCHANGES INTERWORKING OF SIGNALLING SYSTEMS SPECIFICATIONS OF SIGNALLING SYSTEM No. 7 CLAUSES APPLICABLE TO ITU-T STANDARD SYSTEMS General Message transfer p
6、art (MTP) Signalling connection control part (SCCP) Telephone user part (TUP) Q.l-Q.3 Q.4-Q.59 Q.60-Q.99 Q.100-Q.119 Q. 1 20-Q .249 Q.250-Q.309 Q.31O-Q.399 Q.400-Q.499 Q.500-Q.599 Q.600-Q.699 Q.700-Q. 849 Q.700 Q.701-Q.709 Q.711-Q.719 Q. 720-Q. 729 Q.740-Q.749 Q.750-Q.759 Q. 76O-Q. 769 Q.770-Q.779 (
7、2.7804.799 Q.8004.849 Q.850-Q.999 Q.850-(2.919 Q. 920-Q.929 Q.930-Q.939 Q.950-Q.999 Q.1100-Q.1199 Q.1200-Q.1999 Q. 940-Q.949 Q. 1000-Q. 1 O99 Q.2000-Q.2999 For further details, please refer to ITU-T List of Recommendations. ITU-T RECOMMENDATION 4.737.1 STAGE 3 DESCRIPTION FOR ADDITIONAL INFORMATION
8、TRANSFER SUPPLEMENTARY SERVICES USING SIGNALLING SYSTEM No. 7: USER-TO-USER SIGNALLING (UUS) I Summary This Recommendation defines the essential functions, procedures and messages required for the transfer of user-to-user signalling information. This Recommendation has been updated regarding the int
9、eraction with call forwarding busy and call forwarding no reply in order to align with the stage 1 description of the user-to-user signalling. Interaction with the explicit call transfer supplementary service has been included as well. Source ITU-T Recommendation 4.737.1 was revised by ITU-T Study G
10、roup 11 (1997-2000) and was approved under the WTSC Resolution No. 1 procedure on the 5th of June 1997. FOREWORD ITU (International Telecommunication Union) is the United Nations Specialized Agency in the field of telecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is a perm
11、anent organ of the ITU. The 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 Conference (WTSC), which meets every four year
12、s, establishes the topics for study by the ITU-T Study Groups which, in their turn, produce Recommendations on these topics. The approval of Recommendations by the Members of the IT-T is covered by the procedure laid down in WTSC Resolution No. 1. In some areas of information technology which fall w
13、ithin ITU-Ts purview, 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 RIGH
14、TS The ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. The ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserte
15、d by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, the ITU hadhad not received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementors are cautio
16、ned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database. O ITU 1998 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and micr
17、ofilm, without permission in writing from the ITU. 11 Recommendation Q.737.1 (06/97) STD-ITU-T RECMN Q.737.1-ENGL 1997 qBb259L Ob40b92 4LT m CONTENTS Page 1 User-to-user signalling . 1.1 User-to-user signalling. service 1 . 1.1.1 Introduction . 1.1.2 Description Operational requirements 1.1.5 Signal
18、ling requirements . Interaction with other supplementary services 1.1.8 Signalling flows Parameter values (timers) Dynamic description . User-to-User Signalling, service 2 1.2.1 Introduction . 1.2.2 Description 1.2.3 Operational requirements 1.2.4 Coding requirements . 1.2.5 Signalling requirements
19、. 1.2.6 Interaction with other supplementary services 1.2.7 Interaction with other networks . 1.2.8 Signalling flows 1.2.9 Parameter values (timers) 1.2.1 O Dynamic description . User-to-user signalling, service 3 . 1.3.1 Introduction . 1.3.2 Description 1.3.3 Operational requirements 1.3.4 Coding r
20、equirements . 1.3.5 Signalling requirements . Interaction with other supplementary services 1.3.8 Signalling flows 1.3.9 Parameter values (timers) 1.3.1 O Dynamic description . 1 . 1.3 1.1.4 Coding requirements . 1.1.6 1.1.7 Interaction with other networks . 1 . 1.9 1 . 1. 1 O 1.2 1.3 1.3.6 1.3.7 In
21、teraction with other networks . 1 1 1 3 3 4 4 7 10 11 13 13 13 13 14 14 14 15 17 20 20 24 24 24 24 24 24 25 25 27 31 31 34 34 . Recommendation 4.737.1 (06/97) LI1 STD-ITU-T RECMN Q.737-1-ENGL 1777 YBb259L ObYOb3 35b m Recommendation Q.737.1 STAGE 3 DESCRIPTION FOR ADDITIONAL INFORMATION TRANSFER SUP
22、PLEMENTARY SERVICES USING SIGNALLING SYSTEM No. 7: USER-TO-USER SIGNALLING (UUS) (Revised in 1997) 1 User-to-user signalling 1.1 User-to-user signalling, service 1 1.1.1 Introduction 1.1.1.1 Scope The User-to-User Signalling (UUS) supplementary service allows an ISDN user to sendreceive a limited am
23、ount of information to/fiom another ISDN user over the signalling channel in association with a call to the other ISDN user. The procedures described in this Recommendation are applicable to User-to-User Information (UUI) transfer in association with a circuit-switched telecommunication service only
24、. Procedures to permit UUI transfer in association with other types of calls (e.g. packet bearer services) are not addressed in this Recommendation. 1.1.1.2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, constitute provis
25、ions of this Recommendation. At the time of publication, the editions indicated were valid. All Recommendations and other references are subject to revision; all users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of the Recommenda
26、tions and other references listed below. A list of the currently valid ITU-T Recommendations is regularly published. 3 1 ITU-T Recommendation 1.1 12 (1993), Vocabulary of terms for ISDNs. CCITT Recommendation I. 130 (1988), Method for the characterization of telecommunication services supported by a
27、n ISDN and network capabilities of an ISDN. ITU-T Recommendation 1.2 1 O (1 993), Principles of telecommunication services supported by an ISDN and the means to describe them. CCIT Recommendation 1.250 (1 988), DeJinition of supplementary services. CCITT Recommendation 1.257.1 (1992), User-to-User S
28、ignalling. CCITT Recommendation Q.80 (1988), Introduction to stage 2 service descriptions for supplementary services. ITU-T Recommendation 4.87.1 (1993), Functions and information flows for services in the ISDN; Stage 2 description for additional information transfer supplementary services: User-to-
29、User Signalling (UUS). ITU-T Recommendation 4.730 (1 993), ISDN supplementary services. ITU-T Recornmendation Q.761 (1993), Functional description of the ISDN user part of Signalling System No. 7. Recommendation Q.737.1 (06/97) 1 ITU-T Recommendation 4.762 (1993), General jnction of messages and sig
30、nals of the ISDN user part of Signalling System No. 7. ITU-T Recommendation 4.763 (1993), Formats and codes of the ISDN user part of Signalling System No. 7. ITU-T Recommendation 4.764 (1 993), ISDN user part signallingprocedures, ITU-T Recommendation 4.957.1 (1993), Stage 3 description for addition
31、al information transfer supplementary services using DSS 1: User-to-User Signalling (VUS). ITU-T Recommendation 4.71 1 (1993), Signalling Sstem No. 7 - Functional description of the signalling connection control part. ITU-T Recommendation 4.712 (1993), SignaEZing System No. 7 - Dejnition andjnction
32、of SCCP messages. ITU-T Recommendation 4.7 13 (1 993), Signalling System No. 7 - SCCP formats and codes. ITU-T Recommendation 4.714 (1993), Signalling System No. 7 - Signalling connection control part procedures. 1.1.1.3 Terms and definitions This Recommendation defines the following terms. 1.1.1.3.
33、1 1.1.1.3.2 service or discarding of user-to-user information. 1.1.1.4 Abbreviations This Recommendation uses the following abbreviations. user-to-user information: The information transferred by the UUS service. user-to-user indicators: Indicators indicating requestacceptancehejection of a UUS ACM
34、ANM CON CPG DSS 1 FAA FAR FRJ IAM ISDN ISUP REL RLC USR UUI UUI ind Address Complete Message Answer Message Connect Message Call Progress Message Digital Subscriber Signalling No. 1 Facility Accepted Message Facility Request Message Facility Reject Message Initial Address Message Integrated Services
35、 Digital Network ISDN User Part Release Message Release Complete Message User-to-User Information Message User-to-User Information User-to-User Indicators 2 Recommendation Q.737.1 (06/97) - STD-ITU-T RECMN Q=737.L-ENGL 1777 48b257L Ob40b95 127 UUS User-to-User Signalling uus 1 User-to-User Signallin
36、g, service 1 uus2 User-to-User Signalling, service 2 uus3 User-to-User Signalling, service 3 1.1.2 Description 1.1.2.1 General description User-to-user signalling, service 1 is used to exchange information between two users as described in Recommendation 1.257.1 (stage 1). The functional description
37、 (stage 2) for this service can be found in Recommendation 4.87.1. The stage 3 DSS 1 description is given in Recommendation 4.957.1. This clause is specific to Signalling System No. 7 and use is made of the ISDN user part protocol defined in Recommendations 4.761 to 764 and Recommendation 4.730. Ser
38、vice 1 allows users to communicate by transferring user-to-user information within ISDN user part messages during the call Set-up and clearing phases. Up to 128 octets of user information may be transferred in each message (see Note 1). The 128 octets do not include the user-to-user information para
39、meter name, the protocol control indicator or the length octets. NOTE 1 - During an interim period of time, networks may support a lesser number (e.g. 32 octets) due to protocol restrictions; 32 octets will always be supported. Restrictions may apply to calls requesting user-to- user information mor
40、e than 32 octets. Service 1 is not a guaranteed service. If for any reason the combination of the basic and supplementary service information causes the overall maximum length of the message to be exceeded then if service 1 is included, the network shall perform segmentation of the ISUP message acco
41、rding to clause 2/Q.764. If the user-to-user information is to be discarded, the exceptional procedures as described in 1.1 S.2.5.2 shall be applied if possible. The treatment given to the user-to- user information parameter in the initial address message as described in this Recommendation is equal
42、ly applicable to the case in which the user-to-user information parameter is carried in the segmentation message after segmentation of the initial address message. NOTE 2 - For user-to-user signalling service 1, subsequent to initial acceptance or rejection of the service at the calling user, furthe
43、r actions may be required to confirm that the service can be provided, or to indicate that it can no longer be provided (e.g. due to the presence of the call forwarding no reply supplementary service). This Recommendation does not provide such requirements whose provision is for further study. 1.1.2
44、.2 Specific terminology User-to-User Information (UUI): The information transferred by the UUS service. User-to-User Indicators (UUI ind): Indicators indicating request/acceptance/rejection of a UUS service or discarding of user-to-user information. 1.1.2.3 See Recommendation 1.257.1. Qualification
45、on the applicability to telecommunication services 1.1.2.4 State definitions No specific state definitions are required. 1.1.3 Operational requirements 1.1.3.1 Provision/withdrawal See Recommendation 1.257.1. Recommendation 4.737.1 (06/97) 3 - STDmITU-T RECMN Q-737-L-ENGL 1997 iBb259L ObiObSb Ob5 1.
46、1.3.2 Not applicable. Requirements on the originating network side 1.1.3.3 Requirements in the network No specific requirements are needed in the network. 1.1.3.4 Not applicable. Requirements on the terminating network side 1.1.4 Coding requirements User-to-user information is carried in the user-to
47、-user information parameter of variable length which may be contained in the initial address, address complete, call progress, connect, answer, segmentation, and release messages. An explicit request for service 1 is carried in the user-to-user indicators parameter in the initial address message. An
48、 explicit indication of acceptance or rejection of service 1 is carried in the user- to-user indicators parameter in the address complete, call progress, answer, connect, or release messages. The network indication, when user-to-user information is discarded from the initial address message accordin
49、g to 1.1.5.2.5.2.3, is carried in the user-to-user indicators parameter in the first appropriate backward message, e.g. the address complete message. 1.1.5 Signalling requirements 1.1.5.1 Activatioddeactivatiodregistration UUS service 1 must be requested by the calling user at call Set-up if UUI transfer is desired in either direction. Once a UUS service is activated (see Note), the network will accept UUI in both directions according to the subscription of the calling user. NOTE - Activation means request of UUS. Invocation means submission of UUI.
