@conference {90,
	title = {Experiences in building a multi-university testbed for research in multimedia communications},
	booktitle = {Parallel and Distributed Processing, 2008. IPDPS 2008. IEEE International Symposium on},
	year = {2008},
	month = {April},
	abstract = {<p>The next generation Internet needs to support multimedia services such as voice/video over IP (VoIP) and IP-based television (IPTV) and media distribution. The goal of the project is to develop a testbed for understanding and analysis of vulnerabilities of IP-based multimedia networks. This is a collaborative project between University of North Texas, Columbia University, Purdue University, and University of California at Davis. This project was awarded in 2006 and in one year, we have developed a multi-university testbed with variety of PBX solutions including Asterisk, a multitude of voice and video IP phones, and multiple universities were connected through a secure VPN and Internet!. As with any endeavor, experiences and we have many unique issues, which sometimes cause setbacks. We have dealt with issues concerning interoperability between phones and servers, network address translation (NAT) connectivity issues, and many other collaboration issues concerning people and technology. An interworking of students from multiple universities, faculty, system administrators and support personnel has brought the testbed resources together for a working environment. In this paper we described our progress and experiences in more detail and how to fulfill our mission statement while supporting the various collaborative efforts involved with this project. In addition, we described the current research activities based on the testbed. Finally we described the next steps in the testbed development.</p>
},
	keywords = {Asterisk, Collaboration, Collaborative work, digital television, Internet telephony, IP-based television, IPTV, media distribution, Multimedia communication, Multimedia communications, multiuniversity testbed, Network address translation, network address translation connectivity issues, Network servers, next generation Internet, open systems, PBX solutions, phones-servers interoperability, private telephone exchanges, Testing, TV, video IP phones, video over IP, virtual private network, virtual private networks, voice over IP, Web and internet services},
	doi = {10.1109/IPDPS.2008.4536392},
	author = {Ram Dantu and Schulzrinne, Henning and Sroufe, Paul}
}
@article {37,
	title = {Nuisance Level of a Voice Call},
	journal = {ACM Trans. Multimedia Comput. Commun. Appl.},
	volume = {5},
	year = {2008},
	pages = {6:1{\textendash}6:22},
	abstract = {<p>In our everyday life, we communicate with many people such as family, friends, neighbors, and colleagues. We communicate with them using different communication media such as email, telephone calls, and face-to-face interactions. While email is not real-time and face-to-face communications require geographic proximity, voice and video communications are preferred over other modes of communication. However, real-time voice/video calls may create nuisance to the receiver. In this article, we describe a mathematical model for computing nuisance level of incoming voice/video calls. We computed the closeness and nuisance level using the calling patterns between the caller and the callee. To validate the nuisance model, we collected cell phone call records of real-life people at our university and computed the nuisance value for all voice calls. We validated the nuisance levels using the feedback from those real-life people. Such a nuisance model is useful for predicting unwanted voice and video sessions in an IP communication network.</p>
},
	keywords = {behavior, Multimedia communications, nuisance, presence, Security, tolerance, unwantedness},
	issn = {1551-6857},
	doi = {10.1145/1404880.1404886},
	url = {http://doi.acm.org/10.1145/1404880.1404886},
	author = {Kolan, Prakash and Ram Dantu and Cangussu, Jo{\~a}o}
}
