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.

Caller ID information to internet protocol television displays

Abstract: Network-based methods and systems transfer caller ID information from a telephony network to an IPTV network. Embodiments integrate service provisioning, subscriber account and policy information between telephony services and IP -based television services, voice call signaling may be intercepted to retrieve caller ID, caller name information, and other call management information, at the call server in the network to deliver an appropriate notification message to the IP-based TV network at its notification server, which in turn sends a message notification to the called party's TV screen. Call log information may also be retrieved and displayed. SIP call forking and IP multimedia subsystem approaches are described.

Using PSTN to convey participant IP addresses for multimedia conferencing

Abstract: An IP/PSTN hybrid multimedia conferencing system in which standard telephone and user station participants establish voice communications over the PSTN, and then exchange IP addresses in-band over the PSTN. User stations then negotiate capabilities over the IP network. All users can participate at a base voice level over the PSTN while user stations can also establish extra-audio media streams over an IP network.

A synchronization and communication model for distributed multimedia objects

Abstract: As the demand for multimedia information systems increases and network technology provides the capability to handle multimedia data, effective communication and synchronization mechanisms are needed in a distributed environment to realize the successful retrieval, composition and presentation of multimedia objects. In this paper, we propose a specification model for the communication and synchronization of multimedia objects in a distributed environment. This model specifies all the necessary functions for the communication and presentation of multimedia objects. We also implement several synchronization schemes in our model that provide mechanisms to handle synchronization anomalies during the presentation of multimedia objects.

Voice service in evolved packet system

Abstract: Methods and apparatus to manage voice service in evolved packet systems are disclosed. An example in a UE with a first indicator related to voice services in an Evolved Packet System (EPS) includes receiving a first Non Access Stratum (NAS) protocol response message with a second indicator and responsive to at least one of the first indicator or the second indicator, cause the UE to select to another radio access technology (RAT).

Quality of service in IP networks: foundations for a multi-service Internet

Abstract: Quality of Service is a fast growing area of technology, being driven by the growth of real-time applications such as voice over IP. This book is perfect for you, technical professionals who are looking for information building blocks of Quality of Service and who want to grasp critical concepts such as the DiffServ and IntServ models and the use of MPLS to support the next generation of VPNs. If you are a Network architect, network engineer, or network designer, you will be using the authoritative guide to understand the different emerging technologies that can be used to archive Quality of Service, and to decide how to incorporate them into your networks and meet the needs of your particular network environment. Quality of Service in IP Networks presents a great deal of technical detail, as well as provides a clear understanding of the architectural issues surrounding delivering QoS in an IP network, and its positions in the emerging technologies within a framework of solutions.