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)
|
|
|---|---|---|---|
| Authors | Ron Shacham , Wolfgang Kellerer , Srisakul Thakolsri , Henning Schulzrinne | ||
| Last updated | 2015-10-14 | ||
| Stream | IETF | ||
| Formats | plain text html pdf htmlized bibtex | ||
| Reviews | |||
| Stream | WG state | (None) | |
| Document shepherd | No shepherd assigned | ||
| IESG | IESG state | RFC 5631 (Informational) | |
| 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
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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 ............................................28
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