SIP Interface to VoiceXML Media Services
RFC 5552
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RFC - Proposed Standard
(May 2009; Errata)
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Last updated |
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2015-10-14
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IETF
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plain text
pdf
html
bibtex
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WG state
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Document shepherd |
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No shepherd assigned
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IESG state |
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RFC 5552 (Proposed Standard)
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Consensus Boilerplate |
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Unknown
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Telechat date |
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Responsible AD |
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Robert Sparks
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Network Working Group D. Burke
Request for Comments: 5552 Google
Category: Standards Track M. Scott
Genesys
May 2009
SIP Interface to VoiceXML Media Services
Status of This Memo
This document specifies an Internet standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements. Please refer to the current edition of the "Internet
Official Protocol Standards" (STD 1) for the standardization state
and status of this protocol. Distribution of this memo is unlimited.
Copyright Notice
Copyright (c) 2009 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents in effect on the date of
publication of this document (http://trustee.ietf.org/license-info).
Please review these documents carefully, as they describe your rights
and restrictions with respect to this document.
Abstract
This document describes a SIP interface to VoiceXML media services.
Commonly, Application Servers controlling Media Servers use this
protocol for pure VoiceXML processing capabilities. This protocol is
an adjunct to the full MEDIACTRL protocol and packages mechanism.
Burke & Scott Standards Track [Page 1]
RFC 5552 SIP Interface to VoiceXML Media Services May 2009
Table of Contents
1. Introduction ....................................................3
1.1. Use Cases ..................................................3
1.1.1. IVR Services with Application Servers ...............3
1.1.2. PSTN IVR Service Node ...............................4
1.1.3. 3GPP IMS Media Resource Function (MRF) ..............5
1.1.4. CCXML <-> VoiceXML Interaction ......................6
1.1.5. Other Use Cases .....................................6
1.2. Terminology ................................................7
2. VoiceXML Session Establishment and Termination ..................7
2.1. Service Identification .....................................7
2.2. Initiating a VoiceXML Session .............................10
2.3. Preparing a VoiceXML Session ..............................11
2.4. Session Variable Mappings .................................12
2.5. Terminating a VoiceXML Session ............................15
2.6. Examples ..................................................16
2.6.1. Basic Session Establishment ........................16
2.6.2. VoiceXML Session Preparation .......................17
2.6.3. MRCP Establishment .................................18
3. Media Support ..................................................19
3.1. Offer/Answer ..............................................19
3.2. Early Media ...............................................19
3.3. Modifying the Media Session ...............................21
3.4. Audio and Video Codecs ....................................21
3.5. DTMF ......................................................22
4. Returning Data to the Application Server .......................22
4.1. HTTP Mechanism ............................................22
4.2. SIP Mechanism .............................................23
5. Outbound Calling ...............................................25
6. Call Transfer ..................................................25
6.1. Blind .....................................................26
6.2. Bridge ....................................................27
6.3. Consultation ..............................................29
7. Contributors ...................................................31
8. Acknowledgements ...............................................31
9. Security Considerations ........................................31
10. IANA Considerations ...........................................32
11. References ....................................................32
11.1. Normative References .....................................32
11.2. Informative References ...................................35
Appendix A. Notes on Normative References ........................36
Burke & Scott Standards Track [Page 2]
RFC 5552 SIP Interface to VoiceXML Media Services May 2009
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