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The Session Initiation Protocol (SIP) "Join" Header", RFC 3911
, 2004
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SIP Telephony Device Requirements and Configuration", RFC 4504
, 2006
"... 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 Notice Copyright (C) The Internet Society (2006). This document describes the requirements for SIP telephony devices, based on the deploy ..."
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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 Notice Copyright (C) The Internet Society (2006). This document describes the requirements for SIP telephony devices, based on the deployment experience of large numbers of SIP phones and PC clients using different implementations in various networks. The objectives of the requirements are a well-defined set of interoperability and multi-vendor-supported core features, so as to enable similar ease of purchase, installation, and operation as found for PCs, PDAs, analog feature phones or mobile phones. We present a glossary of the most common settings and some of the more widely used values for some settings.
Generalized third-party call control in SIP networks
- In Proceedings of the Second International Conference on Principles, Systems and Applications of IP Telecommunications. Springer-Verlag LNCS
, 2008
"... Abstract. Third-party call control (3PCC) is essential to implementing advanced services in Voice-over-IP (VoIP) networks. It allows intermediary applications to control how the media streams of endpoint devices are connected together. However the Session Initiation Protocol (SIP), the widely adopte ..."
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Abstract. Third-party call control (3PCC) is essential to implementing advanced services in Voice-over-IP (VoIP) networks. It allows intermediary applications to control how the media streams of endpoint devices are connected together. However the Session Initiation Protocol (SIP), the widely adopted open standard for VoIP signaling, presents a number of challenges that make 3PCC in SIP complex and prone to errors. Previously proposed solutions only address operations under ideal conditions and thus are incomplete. Furthermore, the problem of compositional 3PCC by multiple applications have not been addressed. In this paper, we propose a general solution for robust and comprehensive media connectivity control. The solution has been verified, and allows multiple applications operating concurrently in a call path to interoperate successfully. 1
Peer-to-Peer Videoconferencing with H.264 Software Codec for Mobiles
"... A rapidly growing number of carriers offer wireless video services to their customers, taking advantage of high quality video codecs implemented in dedicated hardware of selected mobile devices. In this paper we introduce a video conferencing software, which seamlessly integrates mobile with station ..."
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A rapidly growing number of carriers offer wireless video services to their customers, taking advantage of high quality video codecs implemented in dedicated hardware of selected mobile devices. In this paper we introduce a video conferencing software, which seamlessly integrates mobile with stationary users in a provider and device independent fashion. Innovations of this work are twofold. At first we report on a mobile realization of an H.264 video codec and its performance on a standard consumer Smartphone. Operating within the tight bounds of real-time compliance on mobiles, this software is an adapted version of a highly optimized H.264 codec. This DAVC codec, which we introduce along the line, significantly outperforms compatible H.264 realizations and allows for a scalable adaptation of its frame rate. In the second part we present a barrier-resistant peer-to-peer group communication scheme, which scales well for medium-size conferences and accounts for the heterogeneous nature of mobile and stationary participants. An outlook on mobility related group communication issues and future optimizations based on structured communication layers concludes the work. Index Terms Mobile video coding, mobile conferencing, peer-topeer group communication, distributed SIP conference management 1.
Session Initiation Protocol (SIP) Call Control- Transfer
, 2009
"... 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. Copyright Notice Copyright (c) 2009 IETF Trust and the persons identified as the ..."
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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. Copyright Notice Copyright (c) 2009 IETF Trust and the persons identified as the
The Authentication and Processing Performance of Session Initiation Protocol (SIP) Based Multi-party Secure Closed Conference System
, 2004
"... Abstract. This paper presents, a new SIP based multi-party secure closed conference system. In the traditional participants, except of captain, conference system doesn't have a privilege for UA (User Agent) that accepts or declines new participants. On the other hand, closed conference system ..."
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Abstract. This paper presents, a new SIP based multi-party secure closed conference system. In the traditional participants, except of captain, conference system doesn't have a privilege for UA (User Agent) that accepts or declines new participants. On the other hand, closed conference system supports this function. We also propose for closed conference system authentication procedure. By means of a real implementation, we provide an experimental performance analysis of SIP security mechanisms.
The Session Inititation Protocol (SIP) "Replaces " Header
, 2003
"... draft-ietf-sip-replaces-04.txt ..."
Multiservice Switching Forum Contribution Contribution Number: msf2004.173.00 Last Saved: (10 h August 2004) Working Group: Interoperability and Test Title: Test Plan for Scenario 2. Source: MSF MSF Confidential
"... Scenario 2 test plan msf2004.173.00 ..."
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Call Control- Conferencing for User Agents
, 2006
"... 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. Copyright Notice Copyright (C) The Internet Society (2006). This specification defines conferencing call control fe ..."
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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. Copyright Notice Copyright (C) The Internet Society (2006). This specification defines conferencing call control features for the Session Initiation Protocol (SIP). This document builds on the Conferencing Requirements and Framework documents to define how a tightly coupled SIP conference works. The approach is explored from the perspective of different user agent (UA) types: conferenceunaware, conference-aware, and focus UAs. The use of Uniform Resource Identifiers (URIs) in conferencing, OPTIONS for capabilities discovery, and call control using REFER are covered in detail with example call flow diagrams. The usage of the isfocus feature tag is
Adobe
, 2009
"... Simple SIP Usage Scenario for Applications in the Endpoints For Internet-centric usage, the number of SIP-required standards for presence and IM and audio/video communications can be drastically smaller than what has been published by using only the rendezvous and session-initiation capabilities of ..."
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Simple SIP Usage Scenario for Applications in the Endpoints For Internet-centric usage, the number of SIP-required standards for presence and IM and audio/video communications can be drastically smaller than what has been published by using only the rendezvous and session-initiation capabilities of SIP. The simplification is achieved by avoiding the emulation of telephony and its model of the intelligent network. ’Simple SIP ’ relies on powerful computing endpoints. Simple SIP desktop applications can be combined with rich Internet applications (RIAs). Significant telephony features may also be implemented in the endpoints. This approach for SIP reduces the number of SIP standards with which to comply-- from roughly 100 currently, and still growing, to about
