Session Initiation Protocol (SIP) Session Mobility
RFC 5631
Document | Type |
RFC - Informational
(October 2009; No errata)
Was draft-shacham-sipping-session-mobility (individual in rai area)
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Authors | Ron Shacham , Wolfgang Kellerer , Srisakul Thakolsri , Henning Schulzrinne | ||
Last updated | 2015-10-14 | ||
Stream | Internent Engineering Task Force (IETF) | ||
Formats | plain text html pdf htmlized (tools) htmlized bibtex | ||
Reviews | |||
Stream | WG state | (None) | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 5631 (Informational) | |
Action Holders |
(None)
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Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Jon Peterson | ||
Send notices to | dean.willis@softarmor.com |
Network Working Group R. Shacham Request for Comments: 5631 H. Schulzrinne Category: Informational Columbia University S. Thakolsri W. Kellerer DoCoMo Euro-Labs October 2009 Session Initiation Protocol (SIP) Session Mobility Abstract Session mobility is the transfer of media of an ongoing communication session from one device to another. This document describes the basic approaches and shows the signaling and media flow examples for providing this service using the Session Initiation Protocol (SIP). Service discovery is essential to locate targets for session transfer and is discussed using the Service Location Protocol (SLP) as an example. This document is an informational document. Status of This Memo This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited. Copyright and License 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 (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the BSD License. This document may contain material from IETF Documents or IETF Contributions published or made publicly available before November 10, 2008. The person(s) controlling the copyright in some of this material may not have granted the IETF Trust the right to allow modifications of such material outside the IETF Standards Process. Without obtaining an adequate license from the person(s) controlling Shacham, et al. Informational [Page 1] RFC 5631 SIP Session Mobility October 2009 the copyright in such materials, this document may not be modified outside the IETF Standards Process, and derivative works of it may not be created outside the IETF Standards Process, except to format it for publication as an RFC or to translate it into languages other than English. Table of Contents 1. Overview ........................................................3 2. Requirements ....................................................4 3. Roles of Entities ...............................................4 4. Device Discovery ................................................5 5. Session Mobility ................................................7 5.1. Options for Session Mobility ...............................7 5.1.1. Transfer and Retrieval ..............................7 5.1.2. Whole and Split Transfer ............................7 5.1.3. Transfer Modes ......................................8 5.1.3.1. Mobile Node Control (MNC) Mode .............8 5.1.3.2. Session Handoff (SH) Mode ..................8 5.1.4. Types of Transferred Media ..........................8 5.2. Addressing of Local Devices ................................9 5.3. Mobile Node Control Mode ..................................10 5.3.1. Transferring a Session to a Single Local Device ....10 5.3.1.1. RTP Media .................................10 5.3.1.2. MSRP Sessions .............................11 5.3.2. Transfer to Multiple Devices .......................13 5.3.3. Retrieval of a Session .............................16 5.4. Session Handoff (SH) mode .................................16 5.4.1. Transferring a Session to a Single Local Device ....16 5.4.2. Retrieval of a Session .............................19 5.4.3. Transfer to Multiple Devices .......................21 5.5. Distributing Sessions for Incoming Call ...................23 5.6. Use of ICE in Session Mobility ............................24 6. Reconciling Device Capability Differences ......................25 6.1. Codec Differences .........................................25 6.2. Display Resolution and Bandwidth Differences ..............27 7. Simultaneous Session Transfer ..................................27 8. Session Termination ............................................28Show full document text