Session Initiation Protocol Service Examples
RFC 5359
| Document | Type |
RFC - Best Current Practice
(October 2008; No errata)
Also known as BCP 144
|
|
|---|---|---|---|
| Last updated | 2015-10-14 | ||
| Stream | IETF | ||
| Formats | plain text pdf html bibtex | ||
| Stream | WG state | (None) | |
| Document shepherd | No shepherd assigned | ||
| IESG | IESG state | RFC 5359 (Best Current Practice) | |
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | Jon Peterson | ||
| Send notices to | (None) | ||
Network Working Group A. Johnston, Ed.
Request for Comments: 5359 Avaya
BCP: 144 R. Sparks
Category: Best Current Practice Tekelec
C. Cunningham
S. Donovan
Cisco Systems
K. Summers
Sonus
October 2008
Session Initiation Protocol Service Examples
Status of This Memo
This document specifies an Internet Best Current Practices for the
Internet Community, and requests discussion and suggestions for
improvements. Distribution of this memo is unlimited.
Abstract
This document gives examples of Session Initiation Protocol (SIP)
services. This covers most features offered in so-called IP Centrex
offerings from local exchange carriers and PBX (Private Branch
Exchange) features. Most of the services shown in this document are
implemented in the SIP user agents, although some require the
assistance of a SIP proxy. Some require some extensions to SIP
including the REFER, SUBSCRIBE, and NOTIFY methods and the Replaces
and Join header fields. These features are not intended to be an
exhaustive set, but rather show implementations of common features
likely to be implemented on SIP IP telephones in a business
environment.
Johnston, et al. Best Current Practice [Page 1]
RFC 5359 SIP Service Examples October 2008
Table of Contents
1. Overview ........................................................3
1.1. Legend for Message Flows ...................................4
2. Service Examples ................................................6
2.1. Call Hold ..................................................6
2.2. Consultation Hold .........................................19
2.3. Music on Hold .............................................38
2.4. Transfer - Unattended .....................................50
2.5. Transfer - Attended .......................................58
2.6. Transfer - Instant Messaging ..............................71
2.7. Call Forwarding Unconditional .............................77
2.8. Call Forwarding - Busy ....................................84
2.9. Call Forwarding - No Answer ...............................92
2.10. 3-Way Conference - Third Party Is Added .................101
2.11. 3-Way Conference - Third Party Joins ....................107
2.12. Find-Me .................................................113
2.13. Call Management (Incoming Call Screening) ...............125
2.14. Call Management (Outgoing Call Screening) ...............132
2.15. Call Park ...............................................135
2.16. Call Pickup .............................................147
2.17. Automatic Redial ........................................154
2.18. Click to Dial ...........................................163
3. Security Considerations .......................................166
4. Acknowledgements ..............................................166
5. References ....................................................167
5.1. Normative References .....................................167
5.2. Informative References ...................................168
Johnston, et al. Best Current Practice [Page 2]
RFC 5359 SIP Service Examples October 2008
1. Overview
This document provides example call flows detailing a SIP
implementation of the following traditional telephony services:
Call Hold 3-Way Conference
Consultation Hold Find-Me
Music on Hold Incoming Call Screening
Unattended Transfer Outgoing Call Screening
Attended Transfer Call Park
Instant Messaging Transfer Call Pickup
Unconditional Call Forwarding Automatic Redial
Call Forwarding on Busy Click to Dial
Call Forwarding on No Answer
Note that the Single Line Extension call flow has been removed from
this document and will be covered in a separate document.
The call flows shown in this document were developed in the design of
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