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Author(s): John F. Buford | Vijay K. Gurbani | Anand R. Prasad

Journal: Journal of Communications
ISSN 1796-2021

Volume: 7;
Issue: 2;
Start page: 87;
Date: 2012;
Original page

Keywords: Special Issue | IP Communication Services

ABSTRACT
Internet telephony, by some measures, is now 15 years old. In the last 15 years, it has emerged from academic and commercial laboratories to become the mainstream method of communications today. The success of Internet telephony applications has demonstrated the feasibility of IP communications to support millions of concurrent users. What started initially as a technology for toll-bypass in the switched telephone network has now grown to subsume the switched telephone network. However, creating scalable innovative services for Internet telephony in a rapid manner is still a work in progress. The web service creation model served as an initial model of creating services in Internet telephony and, to a great extent, still continues in the same role. As web mashups proliferated, voice mashups gained currency; as RSS feeds lead to innovative web services, the voice market capitalized with voice-enabled RSS feeds. Added to this mix are more recent technological advances such as virtualization, virtual worlds, IMS and mobile technologies, and capable personal digital assistants -- all enabling a variety of new communication protocols, services and architectures. It is our great pleasure to bring you this special issue on IP Communication Services. The special issue contains five papers that explore innovative and significant research on recent advances in architecture, system, protocol, and modeling, as well as emerging applications and standards related to IP Communication Services. The first two papers are invited survey papers. The Session Initiation Protocol (SIP): An Evolutionary Study by Baset et al. reviews the history and key contributions of the Session Initiation Protocol (SIP), a fundamental protocol for IP communication services. As SIP has matured, operational issues have taken to the forefront. The paper explores the genesis of SIP, touches upon the many ways in which the protocol is deployed in today's networks, looks at operational issues and more importantly, takes a critical look at where SIP succeeded and where it did not. The second invited paper, Service Program Mobility: A New Paradigm for Mobile Operators’ Service Delivery by Lundqvist et al. describes an approach for service mobility for roaming users. As the society becomes more mobile and personal devices proliferate, the services associated with the users must migrate to be closer to them for a good quality of experience. The authors describe a mechanism for global service provisioning called Service Program Mobility that enables such migration. In the third paper, Enhancing Unified Communication Services with Communication Context by K. Dhara et al., the authors present an existing system which automatically determines context in a unified communications environment, and uses this context to provide important new services to users. The authors discuss several novel services and the specific algorithms to enable such services. Internet telephony fraud is a recurring topic in the news. One way to combat such fraud is to have strong forensics tools and processes that allow collaborative exchange of forensics information between regional security centers. The fourth paper, A Novel Protocol Design and Collaborative Forensics Mechanism for VoIP Services by Hsu et al. outlines a novel application-layer protocol for collecting forensics information needed by law enforcement and allowing the regional VoIP forensics collection centers coordinate activities to diffuse VoIP fraud. The problem of QoS provisioning in network virtualization is addressed in the fifth paper, Analysis on Quality of Service Provisioning for Communication Services in Network Virtualization by Q. Duan. Using Service Oriented Architecture (SOA) as the basis for the provisioning architecture, the paper provides an analytical model for SOA-based communication service delivery in network virtualization, an analysis technique for performance evaluation of SOA-based service delivery systems, and an approach to analyzing resource allocation for QoS provisioning of communication services in network virtualization. We would like to express our gratitude to the reviewers who provided the authors with important, timely and constructive feedback: Salman Baset, IBM Research, USA; Mario Kolberg, University of Stirling, UK; Salvatore Loreto, Ericsson Research, Finland; Thomas Magedanz, Fraunhofer FOKUS, Germany; Saverio Niccolini, NEC Laboratories Europe, Germany; Joerg Ott, Aalto University, Finaland; Thomas Schmidt, HAW Hamburg, Germany; Jan Seedorf, NEC Laboratories Europe, Germany; Eunsoo Shim, Samsung, Korea; Jose Soler, Technical University of Denmark, Denmark; Hideki Tode, Osaka Prefecture University, Japan; Matthias Wählisch, Freie Universität Berlin, Germany; Georg Wittenburg, École Polytechnique, France; Xiaotao Wu, Avaya Labs Research, USA. We thank all authors who have submitted their papers for consideration for this issue. We also thank the staff at the JCM Academy Publisher for their help in handling the manuscripts. Finally, we extend our appreciation to the Editor-in-Chief of the Journal of Communications, Dr. Haohong Wang, for providing us this opportunity to organize this special issue.
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