This document defines a conference event package for tightly coupled conferences using the Session Initiation Protocol (SIP) events framework, along with a data format used in notifications for this package. The conference package allows users to subscribe to a conference Uniform Resource Identifier (URI). Notifications are sent about changes in the membership of this conference and optionally ...

A Session Initiation Protocol (SIP) server may be overloaded by emergency-induced call volume, “American Idol” style flash crowd effects or denial of service attacks. The SIP server overload problem is interesting especially because the costs of serving or rejecting a SIP session can be similar. For this reason, the built-in SIP overload control mechanism based on generating rejection messages ...

This document proposes the use of SIP for Network-capable appliances. It leverages standard SIP capabilities to directly communicate with appliances even when they are behind firewalls, NATs or other entities that prevent direct end-to-end communication. When combined with the recently proposed Instant Messaging and Presence SIP extensions these techniques become even more powerful to allow the...

This paper describes the JAINTM JavaTM Call Control (JCC)∗ Application Programming Interface (API), and its relationship to network protocols, in particular the Session Initiation Protocol (SIP). JCC is a high-level object-oriented open, standard API for Next Generation Network (NGN) softswitches that enables rapid creation, by third parties, of services that can run independently of the underl...

This document describes how the IPv4 Session Initiation Protocol (SIP) user agents can communicate with IPv6 SIP user agents (and vice versa) at the signaling layer as well as exchange media once the session has been successfully set up. Both singleand dual-stack (i.e., IPv4-only and IPv4/IPv6) user agents are considered.

This document shows example call flows demonstrating the use of Transport Layer Security (TLS), and Secure/Multipurpose Internet Mail Extensions (S/MIME) in Session Initiation Protocol (SIP). It also provides information that helps implementers build interoperable SIP software. To help facilitate interoperability testing, it includes certificates used in the example call flows and processes to ...

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. Abstract The Session Initiation Protocol ...

The Session Initiation Protocol (SIP) server overload management has attracted interest since SIP is being widely deployed in the Next Generation Networks (NGN) as a core signaling protocol. Yet all existing SIP overload control work is focused on SIP-over-UDP, despite the fact that TCP is increasingly seen as the more viable choice of SIP transport. This paper answers the following questions: ...

With a strong push from commercial ventures like Microsoft Xbox and Sony Playstation , the multiplayer networked gaming industry continues to grow steadily. Multiplayer games allow geographically dispersed players to participate in a single game and in order to provide interaction amongst players in such environments, text messaging and real-time voice through VoIP is used. However, such intera...

This document specifies how message bodies are handled in SIP. Additionally, this document specifies SIP user agent support for MIME (Multipurpose Internet Mail Extensions) in message bodies. 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...