SIP-based Internet Telephony is an increasingly popular communication system that is used by various users and organizations. Most of deployments are based on client/server model in traditional SIP system. Especially, conferencing function is used for voice/video conference include file transfer and share remote applications through internet network. The… (More)
Nowadays not only many of research works with various international networks are increasing more and more but also commercial works are increasing with different international networks. In this paper, we have constructed the overlay multicast testbed with KOREN and TEIN2 network, and then we also analyze and research many works with the data got from the… (More)
SUMMARY Personal e-healthcare service is growing significantly. A large number of personal e-health measuring and monitoring devices are now in the market. However, to achieve better health outcome, various devices or services need to work together. This coordination among services remains challenge, due to their variations and complexities. To address this… (More)
Recently, location based services (LBS) have become more important in today technology advancements. Privacy issue in LBS is one of the most important concerns. In this paper, we have proposed an anonymity preserving framework which can provide a user with more privacy in both authenticating and querying processes. In our framework, an authentication… (More)
In this paper we discuss several issues with the present usage model for Mobile-IP that tend to limit its deployability and suggest solutions to most of these practical deficiencies. In particular, we conclude that the Mobile IP protocols and implementations should operate with any number of Home Agents. That is, from none to many.