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IP Multimedia Subsystem

About: IP Multimedia Subsystem is a research topic. Over the lifetime, 4398 publications have been published within this topic receiving 43698 citations.


Papers
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Journal ArticleDOI
TL;DR: The background, current status and future prospects for zero-configuration networking are examined in this tutorial.
Abstract: IP hosts and network infrastructure have historically been difficult to configure, but emerging networking protocols promise to enable hosts to establish IP networks without prior configuration or network services. Even very simple devices with few computing resources will be able to communicate via standard protocols wherever they are attached. Current IETF (Internet Engineering Task Force) standardization efforts, such as those in the Zeroconf Working Group, aim to make this form of networking simple and inexpensive. In this tutorial, I examine the background, current status and future prospects for zero-configuration networking.

125 citations

Patent
02 Aug 2002
TL;DR: In a voice over IP system, an IP telephone includes an LED lamp that indicates a voice message has been stored in a remote voice mail system, and the IP telephone can then access that voice message as mentioned in this paper.
Abstract: In a voice over IP system, an IP telephone includes an LED lamp that indicates a voice message has been stored in a remote voice mail system. The IP telephone can then access that voice message. The message can also be moved from one remote site to another.

120 citations

Book
01 Mar 1998
TL;DR: In this article, the authors explore the unique engineering problems posed by running voice over a connectionless network and clearly explain the advantages and disadvantages of IP versus traditional packet networks, and present the latest standards and practices so you can determine which approach is best for your company.
Abstract: From the Publisher: An increasing number of companies are taking advantage of Voice over IP (VoIP) technology. Before implementing VoIP, companies must decide if the packetized voice should be delivered over Layer 2 networks such as ATM or Frame Relay, or over Layer 3 IP networks. This comprehensive book presents the latest standards and practices so you can determine which approach is best for your company. Drawing upon years of practical experience, the authors explore the unique engineering problems posed by running voice over a connectionless network. They clearly explain the advantages and disadvantages of IP versus traditional packet networks. This book is a significant expansion of the authors' first edition, which published in 1998 and had the distinction of being the first book in the industry dedicated to this important topic of key interest to enterprise customers.

119 citations

Patent
Radhika R. Roy1
10 Feb 1997
TL;DR: In this article, a method for providing real-time multimedia conferencing services is described over a hybrid network, consisting of packet-switched nonguaranteed quality of service local area networks and a cellswitched wide area network having a multimedia bridge connected to the wide-area network via routers.
Abstract: A method for providing real-time multimedia conferencing services is described over a hybrid network, consisting of packet-switched nonguaranteed quality of service local area networks and a cell-switched wide area network having a multimedia bridge connected to the wide area network. The local area networks and the multimedia bridge are interconnected to the wide area network via routers. New architectural entities within the multimedia bridge execute a multimedia performance and resource analysis algorithm and determine whether the network and the bridge have sufficient resources to satisfy the requirements of the multimedia conference call. If sufficient resources are not available, it is determined whether the requirements for the higher priority services can be provided by preempting the lower priority resources. Signaling information messages are exchanged between the communicating entities indicating whether the multimedia conference can be accepted, rejected, or accepted to operate in degraded mode, based on the analysis performed by the bridge.

117 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20235
202219
202124
202050
201971
201881