Topic
IP Multimedia Subsystem
About: IP Multimedia Subsystem is a(n) research topic. Over the lifetime, 4398 publication(s) have been published within this topic receiving 43698 citation(s).
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Patent•
08 Jan 2001TL;DR: In this paper, the authors present a communications system consisting of a networked multimedia device (also referred to as a multimedia player) and a media server that may be located within a home network or an external network.
Abstract: The present invention contains a communications system consisting of a networked multimedia device (also referred to as a multimedia player) and a media server that may be located within a home network or an external network. Further it contains a method for selecting and delivering multimedia. Specifically, the instant invention focuses on solutions for multimedia content delivery from a centralized repository, via the home-networking infrastructure, to IP based multimedia devices, which are connected to that same network.
769 citations
01 Sep 1990
TL;DR: In this paper, the authors focus on applications that bring subject matter into a meeting, not on applications-such as voting or brainstorming tools-that aid the meeting process itself, and attempt both to support single-user applications running in the shared environment, and to provide a base for developing inherently shared applications.
Abstract: Computer teleconferencing allows individuals scattered near and far to collaborate in writing a paper, negotiate over a budget spreadsheet, or cooperate in debugging a program. Our project focuses on applications that bring subject matter into a meeting, not on applications-such as voting or brainstorming tools-that aid the meeting process itself. We attempt both to support single-user applications running in the shared environment, and to provide a base for developing inherently shared applications.
415 citations
Patent•
10 Apr 2006TL;DR: In this paper, a system for supporting a plurality of different applications utilizing a next generation network having a network layer includes an application services middleware between the applications and the network layer.
Abstract: A system for supporting a plurality of different applications utilizing a next generation network having a network layer includes an application services middleware between the applications and the network layer that includes a plurality of common infrastructure elements usable by the different applications. The common infrastructure elements provide both services associated with use of the network and services that are not associated with use of the network. At least one of the common infrastructure elements is an Internet Protocol (IP) Multimedia Subsystem (IMS) element.
379 citations
Patent•
AT&T1
TL;DR: In this paper, the authors describe a virtual meeting services complex (28) which provides multimedia telecommunications service to subscribers of the network (10) in a manner similar to that now used to complete conventional audio telephone calls.
Abstract: A multimedia telecommunications network (10) provides telephone service which may involve one or more of audio, video and data communications. In one example of the invention, the multimedia telecommunications network (10) contains a virtual meeting services complex (28) which provides multimedia telecommunications service to subscribers of the network (10). Multimedia telephone calls can be completed automatically by the virtual meeting services complex (28) in a manner similar to that now used to complete conventional audio telephone calls. The multimedia telecommunications network (10) containing this virtual meeting services complex (28) is able to connect together users having diverse equipment and is able to handle integrated and nonintegrated network access mechanisms.
353 citations
Book•
01 Jan 2004
TL;DR: This book explains how the IETF developed these protocols and describes how these protocols are used in the IMS architecture, and provides details on the latest policy technology and security architecture written by experienced professionals in the field.
Abstract: Third edition of this best-selling guide to IMS: fully revised, and updated with brand new material The IMS (IP Multimedia Subsystem) is the technology that merges the Internet with the cellular world. It makes Internet technologies such as the web, email, instant messaging, presence, and videoconferencing available nearly everywhere at any time. The third edition of this bestselling book is fully updated and provides comprehensively expanded content, including new chapters on emergency calls and on Voice Call Continuity (VCC). As well as this, The 3G IP Multimedia Subsystem (IMS) presents updated material including a comprehensive picture of Session Initiation Protocol (SIP) as well as its applicability to IMS. As most of the protocols have been designed in the IETF, this book explains how the IETF developed these protocols and describes how these protocols are used in the IMS architecture. This is an indispensable guide for engineers, programmers, business managers, marketing representatives and technically aware users who want to understand how the IMS works and explore the business model behind it. New chapters on emergency calls, Voice Call Continuity (VCC), service configuration (XCAP, XDM), and conferencing Fully updated throughout, including Policy and Charging Control (PCC), QoS, Presence, Instant Messaging, Multimedia Telephony Services, and Push-to-talk over Cellular (PoC) Describes the IP Multimedia Subsystem from two different perspectives: from the IETF perspective, and from the 3GPP perspective. Provides details on the latest policy technology and security architecture Written by experienced professionals in the field.
341 citations