Session initiation protocol services architecture

Dianda, Janet R.; Gurbani, Vijay K.; Jones, Mark

doi:10.1002/bltj.50

Cited by 14 publications

(12 citation statements)

References 16 publications

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“…Implement a mediation function in the network that uses precedence rules to resolve overlap in the use of events and requests/commands [14]. Events and requests/commands can be sequenced, repressed, or selectively repressed.…”

Section: Solutionmentioning

confidence: 99%

Documenting architectures with patterns

Hanmer¹,

Kocan

2004

Bell Labs Tech. J.

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Software patterns have been used for a decade or more to describe solutions to design and architecture problems. This paper illustrates the value of using software patterns to describe and generate specific architectures and discusses the objectives and techniques of documenting architectures using these patterns. It defines the specialized system of software patterns called a pattern language and presents example patterns and an example pattern language. Finally, it introduces a set of software patterns that represents service architectures, including service architectures for offering advanced services. © 2004 Lucent Technologies Inc.

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Section: Solutionmentioning

confidence: 99%

Documenting architectures with patterns

Hanmer¹,

Kocan

2004

Bell Labs Tech. J.

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“…Whereas the previous subsections described the challenges associated with invoking services with service logic in one domain, in hybrid services [3,12] the service logic is distributed across domains (i.e., the service originates in one domain and terminates in a different domain). An example of such a service is click-to-dial-back.…”

Section: Service Convergence Challengesmentioning

confidence: 99%

Converged wireline-wireless network evolution: Opportunities and challenges

Joseph¹,

Justl²,

Magee³

et al. 2005

Bell Labs Tech. J.

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Wireline-wireless convergence has become an important trend in the telecommunications industry as service providers (SPs) infrastructures, to a combination of infrastructures (e.g., wireless-wireline, including cable and highspeed wireless Internet access [Wi-Fi] providers) that have the potential to offer increased cost efficiency, or to a simple bundling or reselling of services to simplify offerings to the customer. This paper highlights many of the key areas of convergence and provides insight into some of its most important aspects, which will influence the technology, the services, the customers, and ultimately the industry itself; it is organized as follows. IntroductionMany forces have buffeted the telecommunications industry over the past decade, including rapid regulatory and technological change and intense competition. All these forces have combined to rapidly reshape an industry that was very stable during its fully regulated period and to provide it with both great opportunity and increased risk. One of the forces currently exerting a strong influence on the industry is convergence. This term means many different things to many people; it can refer to the convergence/ provision/integration of services across multiple 59The following section, "Motivation for Convergence," explains the telecommunications needs of customers and how these needs influence the services provided by service providers (SPs); it also shows how customer services become integrated and ultimately affect the underlying services and technologies.The succeeding section, "Enabling Technologies and Architectures," describes how technology and network architectures are enabling converged services with standardization across all access technologies while providing the ability to deliver the same services across wireless and wireline/cable/Wi-Fi networks and to integrate many aspects of the networks in an access-independent environment.The next section, "Current Network Environment and Service Convergence," describes a typical SP environment and the challenge the SP faces in attempting to provide new converged services while continuing to profit from its legacy investments.The subsequent section, "IN/WIN and SIP," describes the role of Session Initiation Protocol (SIP) in the new converged networks and its relationship to intelligent network (IN)/wireless IN (WIN) voice network capabilities. As networks evolve, and as Internet Protocol (IP) services evolve to the IP Multimedia Subsystem (IMS), it will be critical to make full use of the capabilities of IN/WIN; this section describes how best to do so.The penultimate section, "Network Convergence Case Study," provides an example case study for network convergence and shows the potential cost advantage of wireless-wireline convergence. If the regulatory environment permits it, such cost advantage may change the industry.The final section, "Regulatory and Other Challenges of Convergence," discusses regulatory aspects of convergence; it is followed by a summarizing conclusion.

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“…2 Through the use of TLS. 3 Through HTTP digest. 4 One-way authentication through HTTP digest; mutual authentication through TLS as well.…”

Section: Sip Entities and The Transport Layermentioning

confidence: 99%

“…Figure 1 highlights the diversity of entities in a typical SIP network, each with its attendant transport requirements. It is outside the scope of this paper to present a detailed overview of each SIP entity and the services it provides; references [3] and [8] provide a more detailed treatment of this topic.…”

Section: Sip Network Architecturementioning

confidence: 99%