Abstract
The IP Multimedia Subsystem (IMS) is a control architecture framework for the Next Generation Network (NGN). It is expected that this new network architecture will provide a new kind of IP multimedia services delivered in network converged environments. The NGN and IMS, even after the years of a standardization effort, are still hot networking topics. One of the communities, which adopt emerging communications standards into their products fast, is the open source community. In present days, there are a few open source products, which allow building the IMS environment. However, there are at least two domains for which they are especially helpful. It is teaching/learning of the IMS architecture and testing service eployment in a nearly real environment. This article provides a survey of available open source products. It also describes the experience with the implementation, establishment and running an IMS testbed, which has been built up on an open source client and server entities. At the server side, the focus is on the Kamailio IMS platform.
Highlights
Generation Network (NGN) presents an interesting concept which merge different communications paradigms, wireline and wireless, mobile and Internet
Chapter two provides the overview of Next Generation Network (NGN) and IP Multimedia Subsystem (IMS) system architecture, chapter three analyzes key open source solutions suitable for establishing an IMS testbed, chapter four provides a description of our approach and chapter five concludes the article
We tested the deployment of IMS testbeds which will be used in our learning and scientific practice
Summary
Generation Network (NGN) presents an interesting concept which merge different communications paradigms, wireline and wireless, mobile and Internet. IMS specifies a set of standardized entities and interfaces and allows building different kinds of integrated innovative services, which should combine features of legacy telecommunication and IP services This concept brings a new Internet and IT way of the service creation approach to the development of innovative and attractive services. Prototyping and delivering of such multimedia services or trial concepts is a challenging task which requires testing environments that allow understanding and evaluating of the behavior and impacts of proposed solutions. This should be one of many factors which help to speed up IMS adoptions. Chapter two provides the overview of NGN and IMS system architecture, chapter three analyzes key open source solutions suitable for establishing an IMS testbed, chapter four provides a description of our approach and chapter five concludes the article
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