1、 International Telecommunication Union ITU-T Q.3613TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (05/2012) SERIES Q: SWITCHING AND SIGNALLING Signalling requirements and protocols for the NGN Service and session control protocols supplementary services Signalling requirements for touch screen term
2、inal-based interactive voice response services Recommendation ITU-T Q.3613 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 SERVICES IN THE ISDN
3、 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.799 Q3 INTERFACE Q.800Q.849 DIGITAL SUB
4、SCRIBER 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 INDEPENDENT CALL
5、CONTROL (BICC) Q.1900Q.1999 BROADBAND ISDN Q.2000Q.2999 SIGNALLING REQUIREMENTS AND PROTOCOLS FOR THE NGN Q.3000Q.3999 General Q.3000Q.3029 Network signalling and control functional architecture Q.3030Q.3099 Network data organization within the NGN Q.3100Q.3129 Bearer control signalling Q.3130Q.3179
6、 Signalling and control requirements and protocols to support attachment in NGN environments Q.3200Q.3249 Resource control protocols Q.3300Q.3369 Service and session control protocols Q.3400Q.3499 Service and session control protocols supplementary services Q.3600Q.3649NGN applications Q.3700Q.3849
7、Testing for next generation networks Q.3900Q.3999 For further details, please refer to the list of ITU-T Recommendations. Rec. ITU-T Q.3613 (05/2012) i Recommendation ITU-T Q.3613 Signalling requirements for touch screen terminal-based interactive voice response services Summary Recommendation ITU-T
8、 Q.3613 specifies the signalling requirements for touch screen terminal-based interactive voice response (TS-IVR) services in the next generation network (NGN). History Edition Recommendation Approval Study Group 1.0 ITU-T Q.3613 2012-05-22 11 Keywords IVR, NGN, SDP, SIP, touch screen terminal. ii R
9、ec. ITU-T Q.3613 (05/2012) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. IT
10、U-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 every four years, establishes the topics for st
11、udy 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 purview, the necessary standards are prepared on a
12、 collaborative basis with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain
13、 certain mandatory provisions (to ensure, e.g., interoperability or applicability) and compliance with the Recommendation 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 re
14、quirements. The use of such words does not suggest that compliance with the Recommendation is required of any party. 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 R
15、ight. 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 intel
16、lectual property, protected by patents, which may be required to implement this Recommendation. However, implementers are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2012 All rig
17、hts reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T Q.3613 (05/2012) iii Table of Contents Page 1 Scope 1 2 References. 1 3 Definitions 1 4 Abbreviations and acronyms 1 5 Conventions 2 6 Service architecture 2
18、6.1 General description and architecture 3 6.2 Functional entities involved in TS-IVR service . 3 7 Signalling requirements 5 7.1 Signalling requirements for the EUF 5 7.2 Signalling requirements for P-CSC-FE 5 7.3 Signalling requirements for S-CSC-FE 5 7.4 Signalling requirements for AS-FE 5 7.5 Si
19、gnalling requirements for MRC-FE 6 7.6 Signalling requirements for MRP-FE . 6 8 Security considerations . 6 Annex A Signalling flows . 7 A.1 Signalling flows for SIP based TS-IVR . 7 A.2 Signalling flows for web based TS-IVR 9 Annex B List of messages imported from IETF RFCs . 11 B.1 IETF RFC 2616 1
20、1 B.2 IETF RFC 3261 11 B.3 IETF RFC 6086 11 Bibliography. 12 Rec. ITU-T Q.3613 (05/2012) 1 Recommendation ITU-T Q.3613 Signalling requirements for touch screen terminal-based interactive voice response services 1 Scope This Recommendation specifies signalling requirements and signalling flows of tou
21、ch screen terminal-based interactive voice response (TS-IVR) services. The TS-IVR services, including session initiation protocol (SIP) based TS-IVR services and web based TS-IVR services, are defined in the next generation network (NGN). The normative part of this Recommendation uses or refers to m
22、essages that are defined in and whose behaviours are described in one or more IETF RFCs. A list of all referenced messages and their origins are provided in Annex B. 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, consti
23、tute provisions of this Recommendation. At the time of publication, the editions indicated were valid. All Recommendations and other references are subject to revision; users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of the Rec
24、ommendations and other references listed below. A list of the currently valid ITU-T Recommendations is regularly published. The reference to a document within this Recommendation does not give it, as a stand-alone document, the status of a Recommendation. ITU-T Y.2012 Recommendation ITU-T Y.2012 (20
25、10), Functional requirements and architecture of next generation networks. ITU-T Y.2211 Recommendation ITU-T Y.2211 (2007), IMS-based real-time conversational multimedia services over NGN. ITU-T Y.2701 Recommendation ITU-T Y.2701 (2007), Security requirements for NGN release 1. IETF RFC 2616 IETF RF
26、C 2616 (1999), Hypertext Transfer Protocol HTTP/1.1. IETF RFC 3261 IETF RFC 3261 (2002), SIP: Session Initiation Protocol. IETF RFC 6086 IETF RFC 6086 (2011), Session Initiation Protocol (SIP) INFO Method and Package Framework. 3 Definitions None. 4 Abbreviations and acronyms This Recommendation use
27、s the following abbreviations and acronyms: AS Application Server AS-FE Application Support Functional Entity DTMF Dual Tone Multi-Frequency EUF End-User Function HTML Hypertext Markup Language 2 Rec. ITU-T Q.3613 (05/2012) HTTP Hypertext Transfer Protocol I-CSC-FE Interrogating Call Session Control
28、 Functional Entity IMS IP Multimedia Subsystem IVR Interactive Voice Response MRC-FE Media Resource Control Functional Entity MRP-FE Media Resource Processing Functional Entity NGN Next Generation Network NNI Network-to-Network Interface P-CSC-FE Proxy Call Session Control Functional Entity RTP Real
29、-time Transport Protocol SCF Service Control Function S-CSC-FE Serving Call Session Control Functional Entity SDP Session Description Protocol SIP Session Initiation Protocol SUP-FE Service User Profile Functional Entity TS-IVR Touch Screen terminal-based Interactive Voice Response UNI User-to-Netwo
30、rk Interface URL Uniform Resource Locator 5 Conventions None. 6 Service architecture The following functions and functional entities are used or referenced throughout this Recommendation. Their descriptions and behaviours are described in ITU-T Y.2012. Application support functional entity (AS-FE) E
31、nd-user function (EUF) Interrogating call session control functional entity (I-CSC-FE) Media resource control functional entity (MRC-FE) Media resource processing functional entity (MRP-FE) Proxy call session control functional entity (P-CSC-FE) Service control function (SCF) Serving call session co
32、ntrol functional entity (S-CSC-FE) Service user profile functional entity (SUP-FE) Rec. ITU-T Q.3613 (05/2012) 3 6.1 General description and architecture Touch screen terminal-based interactive voice response (TS-IVR) service is a real-time conversational multimedia service in NGN. Additional user i
33、nterfaces, such as video or web, working with a touch screen terminal service, enhance user experience. Users interact with TS-IVR service by pressing keypad buttons or by touching specified areas of the screen on the terminal. The TS-IVR service can respond with pre-recorded or dynamically generate
34、d audio and/or video messages to further direct the user on how to proceed with the service. TS-IVR service can be used to control most functions where the interface can be separated into a series of simple menu choices. TS-IVR service provides more flexibility and capability to users, such as the a
35、bility to sign a document (e.g., credit card receipt) on the screen, which is something that is not possible using the keypad. There are two kinds of TS-IVR services that facilitate interaction between users and the touch interface of the terminal. SIP based: Provides TS-IVR services using multimedi
36、a call connections. Users interact with a voice and video screen using the touch interface of the terminal. Web based: Provides TS-IVR services using both hypertext transfer protocol (HTTP) and voice call connections. Users interact with voice and web content using the touch interface of the termina
37、l. TS-IVR service is defined in ITU-T Y.2211. Figure 6-1 shows the general architecture of TS-IVR services in NGN. Q.3613(12)_F6.1Originating network Terminating networkService stratumTransport stratumEnd-userfunctionNGN NNINGN UNITransport stratumIMScomponentTS-IVRservice Service stratumSCFASF/SSFF
38、igure 6-1 General architecture of TS-IVR services in NGN 6.2 Functional entities involved in TS-IVR service 6.2.1 SIP based TS-IVR service Figure 6-2 illustrates the functional entities involved in the SIP based TS-IVR services. The end-user function (EUF) is implemented in terminals that are capabl
39、e of touch screen based input/output and multimedia call connections. EUF shall be capable of receiving touch control information from AS-FE, and sending touch event information to AS-FE. 4 Rec. ITU-T Q.3613 (05/2012) Touch control information consists of a set of bounding box coordinates and an opt
40、ional DTMF digit. When the user clicks on a point within the bounding box, on the touch screen, EUF shall send the corresponding DTMF digit to AS-FE. If there is no corresponding DTMF digit, EUF shall send the coordinates of the clicked point. For example, if touch control information includes a bou
41、nding box with coordinates (10, 10, 100, 100) and the corresponding DTMF 1, and the user touches point (50, 50), EUF shall send DTMF 1 to AS-FE. If there is the same touch control information but no corresponding DTMF 1, and the user touches the same point (50, 50), then EUF shall send the coordinat
42、es (50, 50) to AS-FE. Touch event information is a DTMF digit or coordinates that EUF sends to AS-FE when the user touches a point within a bounding box of touch control information. In the above example, touch event information is DTMF 1 or coordinates (50, 50). AS-FE uses the SIP based TS-IVR serv
43、ice logic. It shall be capable of sending touch control information to EUF, and receiving touch event information from EUF. P-CSC-FE is a general proxy server, and S-CSC-FE performs the service trigger. MRC-FE and MRP-FE support video calls. MRP-FE shall have the media resources (e.g., multimedia an
44、nouncements) related to the specific TS-IVR services at its disposal. Q.3613(12)_F6.2S-CSC-FE MRC-FETerminating networkAS-FETS-IVRservice logicSIP SIPOriginating networkSIPSIPService stratumTransport stratumEnd-userfunctionRTPRTPTransport stratumP-CSC-FEMRP-FEFigure 6-2 Functional entities involved
45、in SIP based TS-IVR services 6.2.2 Web based TS-IVR service Figure 6-3 depicts the functional entities involved in the web based TS-IVR service. EUF includes terminals that are capable of touch screen based input/output and have a web browser. EUF shall simultaneously browse web content and receive
46、user input during a voice call. AS-FE uses web based TS-IVR service logic. AS-FE shall be capable of sending web content, and receiving user responses. P-CSC-FE is a general proxy server, and S-CSC-FE performs the service trigger. MRC-FE and MRP-FE shall have media resources (e.g., audio announcemen
47、ts) related to the specific TS-IVR services at its disposal. Rec. ITU-T Q.3613 (05/2012) 5 Q.3613(12)_F6.3S-CSC-FE MRC-FETerminating networkAS-FETS-IVRservice logicSIP SIPOriginating networkSIPSIPService stratumTransport stratumEnd-userfunctionRTPRTPTransport stratumP-CSC-FEMRP-FEHTTPFigure 6-3 Func
48、tional entities involved in web based TS-IVR services 7 Signalling requirements The following clauses describe signalling requirements for providing SIP based TS-IVR and web based TS-IVR services in each functional entity. 7.1 Signalling requirements for the EUF 7.1.1 SIP based TS-IVR EUF shall incl
49、ude a SIP based TS-IVR indication that EUF is a touch screen device and capable of multimedia TS-IVR services, when it sends the INVITE message. EUF shall support INFO package framework IETF RFC 6086. EUF shall receive an INFO message with touch control information from AS-FE, and send an INFO message with touch event information to AS-FE. 7.1.2 Web based TS-IVR EUF shall include a web based TS-IVR indication that EUF is a touch screen device and capable of web based TS-IVR services, when i
