ETSI TS 123 333 V7.3.0 (2008-01) Technical Specification Universal Mobile Telecommunications System (UMTS); Multimedia Resource Function Controller (MRFC) - Multimedia Resource Function Processor (MRFP) Mp interface; Procedures descriptions (3GPP TS 23.333 version 7.3.0 Release 7) 3GPP TS 23.333 version 7.3.0 Release 7 1 ETSI TS 123 333 V7.3.0 (2008-01) Reference RTS/TSGC-0423333v730 Keywords UMTS ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N° 348 623 562 00017 - NAF 742 C Association à but non lucratif enregistrée à la Sous-Préfecture de Grasse (06) N° 7803/88 Important notice Individual copies of the present document can be downloaded from: http://www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF). 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ETSI 3GPP TS 23.333 version 7.3.0 Release 7 3 ETSI TS 123 333 V7.3.0 (2008-01) Contents Intellectual Property Rights................................................................................................................................2 Foreword.............................................................................................................................................................2 Foreword.............................................................................................................................................................6 1 Scope........................................................................................................................................................7 2 References................................................................................................................................................7 3 Definitions, symbols and abbreviations...................................................................................................8 3.1 Definitions..........................................................................................................................................................8 3.2 Symbols..............................................................................................................................................................8 3.3 Abbreviations.....................................................................................................................................................8 4 Architecture..............................................................................................................................................8 5 Functional Requirements..........................................................................................................................9 5.1 General...............................................................................................................................................................9 5.2 Play Tone............................................................................................................................................................9 5.3 Play Announcement.........................................................................................................................................10 5.4 Text to Speech..................................................................................................................................................10 5.5 Audio Record...................................................................................................................................................11 5.6 DTMF Collection.............................................................................................................................................12 5.7 Automatic Speech Recognition........................................................................................................................12 5.8 Play Multimedia...............................................................................................................................................12 5.9 Multimedia Record...........................................................................................................................................13 5.10 Audio Conference.............................................................................................................................................14 5.11 Multimedia Conference....................................................................................................................................14 5.12 Audio Transcoding...........................................................................................................................................14 5.13 Video Transcoding...........................................................................................................................................15 6 MRFC-MRFP Procedures......................................................................................................................15 6.1 Non-Call Related Procedures...........................................................................................................................15 6.1.1 General........................................................................................................................................................15 6.1.2 MRFP Unavailable.....................................................................................................................................15 6.1.3 MRFP Available.........................................................................................................................................16 6.1.4 MRFP Recovery.........................................................................................................................................17 6.1.5 MRFC Recovery.........................................................................................................................................17 6.1.5.1 General..................................................................................................................................................17 6.1.5.2 MRFC Restoration................................................................................................................................18 6.1.6 MRFP Re-register.......................................................................................................................................18 6.1.7 MRFP Re-registration Ordered by MRFC..................................................................................................19 6.1.8 Audit of MRFP...........................................................................................................................................19 6.1.8.1 Audit of Value.......................................................................................................................................19 6.1.8.2 Audit of Capability.....................................................................................................................................19 6.1.9 MRFP Capability Change...........................................................................................................................20 6.1.10 MRFC Out of service..................................................................................................................................20 6.1.11 MRFP Resource Congestion Handling – Activate......................................................................................20 6.1.12 MRFP Resource Congestion Handling -Indication.....................................................................................21 6.1.13 Hanging termination detection...............................................................................................................................21 6.2 Call Related Procedures...................................................................................................................................21 6.2.1 Play Tone Procedure...................................................................................................................................21 6.2.1.1 General..................................................................................................................................................21 6.2.1.2 Send tone...............................................................................................................................................22 6.2.1.3 Stop tone...............................................................................................................................................22 6.2.1.4 Tone completed.....................................................................................................................................22 6.2.1.5 Message sequence chart........................................................................................................................22 6.2.2 Play Announcement Procedure...................................................................................................................23 6.2.2.1 General..................................................................................................................................................23 ETSI 3GPP TS 23.333 version 7.3.0 Release 7 4 ETSI TS 123 333 V7.3.0 (2008-01) 6.2.2.2 Start announcement...............................................................................................................................23 6.2.2.3 Stop announcement...............................................................................................................................24 6.2.2.4 Announcement completed.....................................................................................................................24 6.2.2.5 Message sequence chart........................................................................................................................24 6.2.3 Text to Speech Procedure...........................................................................................................................25 6.2.3.1 General..................................................................................................................................................25 6.2.3.2 Start TTS...............................................................................................................................................25 6.2.3.3 Stop TTS...............................................................................................................................................26 6.2.3.4 TTS Completed.....................................................................................................................................26 6.2.3.5 Message sequence chart........................................................................................................................26 6.2.4 Audio Record Procedure.............................................................................................................................27 6.2.4.1 General..................................................................................................................................................27 6.2.4.2 Start audio record..................................................................................................................................27 6.2.4.3 Stop audio record..................................................................................................................................27 6.2.4.4 Audio record completed........................................................................................................................27 6.2.4.5 Message sequence chart........................................................................................................................27 6.2.5 DTMF Collection Procedure.......................................................................................................................28 6.2.6 Automatic Speech Recognition Procedure.................................................................................................29 6.2.6.1 General..................................................................................................................................................29 6.2.6.2 Start ASR..............................................................................................................................................29 6.2.6.3 Stop ASR..............................................................................................................................................30 6.2.6.5 Message sequence chart........................................................................................................................30 6.2.7 Play Multimedia Procedure........................................................................................................................31 6.2.7.1 General..................................................................................................................................................31 6.2.7.2 H.248 context model.............................................................................................................................31 6.2.7.3 Start playing multimedia.......................................................................................................................32 6.2.7.4 Stop playing multimedia.......................................................................................................................32 6.2.7.5 Playing multimedia completed..............................................................................................................32 6.2.7.6 Message sequence chart........................................................................................................................32 6.2.8 Multimedia Record Procedure....................................................................................................................33 6.2.8.1 General..................................................................................................................................................33 6.2.8.2 H.248 context model.............................................................................................................................33 6.2.8.3 Start multimedia Record.......................................................................................................................34 6.2.8.4 Stop multimedia record.........................................................................................................................34 6.2.8.5 Multimedia record Completed..............................................................................................................34 6.2.8.6 Message sequence chart........................................................................................................................35 6.2.9 Audio Conference Procedure......................................................................................................................35 6.2.9.1 Context Model.......................................................................................................................................35 6.2.9.2 Ad-hoc Conferences..............................................................................................................................35 6.2.9.2.1 General............................................................................................................................................35 6.2.9.2.2 Create Ad-hoc Audio Conference Procedure..................................................................................35 6.2.9.2.3 Closure of Audio Conference Procedure.........................................................................................36 6.2.9.2.4 Add Subsequent User to Conference; Dial-out................................................................................36 6.2.9.2.5 Add subsequent user to conference; Dial-in....................................................................................37 6.2.9.2.6 Remove Conference Participant Procedure.....................................................................................38 6.2.10 Multimedia Conference Procedures............................................................................................................39 6.2.10.1 Context Model.......................................................................................................................................39 6.2.10.2 Ad-hoc Conferences..............................................................................................................................39 6.2.10.2.1 General............................................................................................................................................39 6.2.10.2.2 Create Ad-hoc Multimedia Conference Procedure..........................................................................39 6.2.10.2.3 Closure of Multimedia Conference Procedure................................................................................40 6.2.10.2.4 Add Subsequent User to Conference; Dial-out................................................................................40 6.2.10.2.5 Add subsequent user to conference; Dial-in....................................................................................41 6.2.10.2.6 Remove Conference Participant Procedure.....................................................................................42 6.2.11 Audio Transcoding Procedure....................................................................................................................43 6.2.12 Video Transcoding Procedure.....................................................................................................................43 7 Charging.................................................................................................................................................43 8 Messages/Procedures and contents........................................................................................................43 8.1 General.............................................................................................................................................................43 8.2 Send tone..........................................................................................................................................................44 ETSI 3GPP TS 23.333 version 7.3.0 Release 7 5 ETSI TS 123 333 V7.3.0 (2008-01) 8.3 Stop tone...........................................................................................................................................................44 8.4 Tone completed................................................................................................................................................45 8.5 Start announcement..........................................................................................................................................45 8.6 Stop Announcement.........................................................................................................................................46 8.7 Announcement Completed...............................................................................................................................46 8.8 Start audio record.............................................................................................................................................46 8.9 Stop audio record..............................................................................................................................................47 8.10 Audio record completed...................................................................................................................................47 8.11 Detect DTMF...................................................................................................................................................48 8.12 Stop DTMF Detection......................................................................................................................................48 8.13 Report DTMF...................................................................................................................................................49 8.14 Start playing multimedia..................................................................................................................................49 8.15 Stop playing multimedia..................................................................................................................................50 8.16 Playing multimedia completed.........................................................................................................................50 8.17 Start multimedia record....................................................................................................................................50 8.18 Stop multimedia record....................................................................................................................................51 8.19 Multimedia record completed...........................................................................................................................51 8.20 Reserve IMS Connection Point and Configure Remote Resources..................................................................53 8.21 Reserve IMS Connection Point Procedure.......................................................................................................55 8.22 Configure IMS Resources Procedure...............................................................................................................56 8.23 Release IMS Termination.................................................................................................................................57 8.24 Start TTS..........................................................................................................................................................57 8.25 Stop TTS..........................................................................................................................................................58 8.26 TTS Completed................................................................................................................................................58 8.27 Start ASR..........................................................................................................................................................59 8.28 Stop ASR..........................................................................................................................................................59 8.29 ASR completed................................................................................................................................................60 8.30 MRFP Out-of-Service or Maintenance Locked................................................................................................60 8.31 MRFP Communication Up..............................................................................................................................61 8.32 MRFP Restoration............................................................................................................................................61 8.33 MRFC Restoration...........................................................................................................................................62 8.34 MRFP Re-register.............................................................................................................................................62 8.35 MRFC Re-registration Ordered by MRFC.......................................................................................................63 8.36 Audit Value......................................................................................................................................................63 8.37 Audit Capability...............................................................................................................................................64 8.38 Capability Update.............................................................................................................................................64 8.39 MRFC Out of Service.......................................................................................................................................65 8.40 MRFP Resource Congestion Handling - Activate............................................................................................65 8.41 MRFP Resource Congestion Handling - Indication.........................................................................................66 8.42 Command Reject..............................................................................................................................................66 8.43 Termination heartbeat indication................................................................................................................67 Annex A (informative): Change history...............................................................................................68 History..............................................................................................................................................................69 ETSI 3GPP TS 23.333 version 7.3.0 Release 7 6 ETSI TS 123 333 V7.3.0 (2008-01) Foreword This Technical Specification has been produced by the 3rd Generation Partnership Project (3GPP). The contents of the present document are subject to continuing work within the TSG and may change following formal TSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with an identifying change of release date and an increase in version number as follows: Version x.y.z where: x the first digit: 1 presented to TSG for information; 2 presented to TSG for approval; 3 or greater indicates TSG approved document under change control. y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections, updates, etc. z the third digit is incremented when editorial only changes have been incorporated in the document. ETSI 3GPP TS 23.333 version 7.3.0 Release 7 7 ETSI TS 123 333 V7.3.0 (2008-01) 1 Scope This specification describes the functional requirements and information flows that generate procedures between the Multimedia Resource Function Controller (MRFC) and the Multimedia Resource Function Processor (MRFP), the Mp Interface. This specification is limited to information flows relevant to the Mp Interface; in order to define these procedures and make the functional requirements clear some triggers from an external interface may be described; these may be specified within the Mr interface for example or within an AS in which the MRFC function resides. However for the overall stage 2 procedures of IMS see 3GPP TS 23.228 [1]. The protocol on the Mp interface is defined to comply with ITU-T H.248.1 Gateway Control Protocol; see [3].The goal of this specification is to provide the input to defining a formal Profile within the H.248 protocol toolbox specifically for the Mp application. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. • References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific. • For a specific reference, subsequent revisions do not apply. • For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document. [1] 3GPP TS 23.228: "IP Multimedia Subsystem (IMS); Stage 2". [2] 3GPP TS 23.002: "Network architecture" [3] ITU-T Recommendation H.248.1 (05/2002), Gateway control protocol: Version 2 + Corrigendum 1 (03/2004). [4] 3GPP TS 24.147 "Conferencing using the IP Multimedia (IM) Core Network (CN) subsystem; Stage 3". [5] 3GPP TS 26.244: "Transparent end-to-end packet switched streaming service (PSS); 3GPP file format (3GP) ". [6] 3GPP TR 21.905: "Vocabulary for 3GPP Specifications". [7] 3GPP TS 23.205: "Bearer independent circuit-switched core network; Stage 2". [8] 3GPP TS 26.235: "Packet switched conversational multimedia applications; Default codecs". [9] 3GPP TS 29.163: "Interworking between the IP Multimedia (IM) Core Network (CN) subsystem and Circuit Switched (CS) networks" [10] IETF RFC 2833: "RTP Payload for DTMF Digits, Telephony Tones and Telephony Signals". [11] W3C Recommendation (September 2004): "Speech Synthesis Markup Language (SSML) Version 1.0" [12] W3C Recommendation (September 2004): "Speech Recognition Grammar Specification (SRGS) Version 1.0" [13] W3C Recommendation (September 2005): "Extensible MultiModal Annotation markup language (EMMA) (draft work in progress)" ETSI 3GPP TS 23.333 version 7.3.0 Release 7 8 ETSI TS 123 333 V7.3.0 (2008-01) [14] 3GPP TS 32.260: "Telecommunication management; Charging management; IP Multimedia Subsystem (IMS) charging". [15] W3C Recommendation (November 2000): "Natural Language Semantics Markup Language (NLSML) for the Speech Interface Framework " [16] 3GPP TS 29.333: " Multimedia Resource Function Controller (MRFC) – Multimedia Resource Function Processor (MRFP) Mp Interface - Stage 3 " 3 Definitions, symbols and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions given in 3GPP TR 21.905 [6] and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in 3GPP TR 21.905 [6]. Media Gateway: See Recommendation H.248.1 [3]. Media Gateway Controller: See Recommendation H.248.1 [3]. Multimedia Resource Function Controller: See 3GPP TS 23.228 [1]. Multimedia Resource Function Processor: See 3GPP TS 23.228 [1]. 3.2 Symbols For the purposes of the present document, the following symbols apply: Mr Interface between the MRFC and S-CSCF Mp Interface between the MRFC and MRFP Mb Interface between MRFP and the other bearer entity 3.3 Abbreviations For the purposes of the present document, the abbreviations given in 3GPP TR 21.905 [6] and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in 3GPP TR 21.905 [6]. ASR Automatic Speech Recognition DTMF Dual Tone Multi Frequency EMMA Extensible MultiModal Annotation markup language IP Internet Protocol MGW Media Gateway MGC Media Gateway Controller MRFC Multimedia Resource Function Controller MRFP Multimedia Resource Function Processor NLSML Natural Language Semantics Markup Language SDP Session Description Protocol SIP Session Initiation Protocol SRGS Speech Recognition Grammar Specification SSML Speech Synthesis Markup Language TTS Text to Speech VXML Voice Extensible Markup Language 4 Architecture The architecture concerning the Multimedia Resource Function is presented in Figure 4.1 below. ETSI 3GPP TS 23.333 version 7.3.0 Release 7 9 ETSI TS 123 333 V7.3.0 (2008-01) AS ISC Mr S-CSCF MRFC Mp Mb Mb MRFP Figure 4.1: Architecture of MRF The scope of this specification is limited to the area shown within the green shading. The MRF is split into Multimedia Resource Function Controller (MRFC) and Multimedia Resource Function Processor (MRFP). Tasks of the MRFC may consist of the following: - Control the media stream resources in the MRFP. - Interpret information coming from an AS and S-CSCF (e.g. session identifier) and control MRFP accordingly. - Generation of CDRs. Tasks of the MRFP may consist of the following: - Control of the bearer on the Mb reference point. - Provide resources to be controlled by the MRFC. - Mixing of incoming media streams (e.g. for multiple parties). - Media stream source (e.g. for multimedia announcements). - Media stream processing (e.g. audio transcoding, media analysis). The Mp reference point allows an MRFC to control media stream resources provided by an MRFP. 5 Functional Requirements 5.1 General All functions are optional. Within a given function some components and procedures might be optional to still support the function but some will be required. Normative text in the following sections thus describes requirements for support within an optional feature where it is desired to differentiate between optional and mandatory parts of the feature. 5.2 Play Tone The MRFC shall request the MRFP to send tones to one, one of several, multiple or all parties connected in a call/session with a given tone identifier for each specific tone. ETSI