The Experts below are selected from a list of 9801 Experts worldwide ranked by ideXlab platform
Wang Huiqiang - One of the best experts on this subject based on the ideXlab platform.
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Design and Implementation of a WWW Proxy Server
Computer Engineering, 2000Co-Authors: Wang HuiqiangAbstract:Proxy Server is an effective way to solve network security problems. Based on analysis of HTTP protocol, the paper describes the principle of WWW Proxy Server and emphasizes on the design and implementation of a practical WWW Proxy Server.
Rudra Dutta - One of the best experts on this subject based on the ideXlab platform.
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Measuring SIP Proxy Server Performance
2013Co-Authors: Sureshkumar V. Subramanian, Rudra DuttaAbstract:Internet Protocol (IP) telephony is an alternative to the traditional Public Switched Telephone Networks (PSTN), and the Session Initiation Protocol (SIP) is quickly becoming a popular signaling protocol for VoIP-based applications. SIP is a peer-to-peer multimedia signaling protocol standardized by the Internet Engineering Task Force (IETF), and it plays a vital role in providing IP telephony services through its use of the SIP Proxy Server (SPS), a software application that provides call routing services by parsing and forwarding all the incoming SIP packets in an IP telephony network. SIP Proxy Server Performance closely examines key aspects to the efficient design and implementation of SIP Proxy Server architecture. Together, a strong design and optimal implementation can enable significant enhancements to the performance characteristics of SPS. Since SPS performance can be characterized by the transaction states of each SIP session, the book analyzes an existing M/M/1-network performance model for SIP Proxy Servers in light of key performance benchmarks, such as the average response time for processing the SIP calls and the average number of SIP calls in the system. It also presents several other real-world industrial case studies to aid in further optimizations. This book is intended for researchers, practitioners and professionals interested in optimizing SIP Proxy Server performance. Professionals working on other VoIP solutions will also find the book valuable.
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A study of performance and scalability metrics of a SIP Proxy Server - a practical approach
Journal of Computer and System Sciences, 2011Co-Authors: Sureshkumar V. Subramanian, Rudra DuttaAbstract:In recent years, Internet Protocol (IP) telephony has been a real alternative to the traditional Public Switched Telephone Networks (PSTN). IP telephony offers more flexibility in the implementation of new features and services. The Session Initiation Protocol (SIP) is becoming a popular signalling protocol for Voice over IP (VoIP) based applications. The SIP Proxy Server is a software application that provides call routing services by parsing and forwarding all the incoming SIP packets in an IP telephony network. The efficiency of this process can create large scale, highly reliable packet voice networks for service providers and enterprises. We established that the efficient design and implementation of the SIP Proxy Server architecture can enhance the performance characteristics of a SIP Proxy Server significantly. Since SIP Proxy Server performance can be characterised by its transaction states of each SIP session, we emulated the M/M/1 performance model of the SIP Proxy Server and studied some of the key performance benchmarks such as average response time to process the SIP calls, and mean number of SIP calls in the system. We showed its limitations, and then studied an alternative M/M/c based SIP Proxy Server performance model with enhanced performance model and studied additional key performance characteristics such as Server utilisation, queue size and memory utilisation. Provided the comparative results between the predicted results with the experimental results conducted in a lab environment.
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comparative study of m m 1 and m d 1 models of a sip Proxy Server
Australasian Telecommunication Networks and Applications Conference, 2008Co-Authors: Sureshkumar V. Subramanian, Rudra DuttaAbstract:In recent years, transmission of packets over Internet has been a real alternative to the traditional Public Switched Telephone Networks (PSTN). The Internet protocol (IP) offers more flexibility in the design and implementation of features and services. The session initiation protocol (SIP) is a commonly adopted signaling protocol for Voice over IP (VoIP) by many telecommunication industries. Since the signaling system of PSTN, signaling system number 7 (SS7) was designed for high reliability, but IP works on the "best effort" basis which motivated us to study the performance characteristics of SIP control plane. In this paper, we studied an M/M/1 performance model of the SIP Proxy Server, showed its limitations, and designed an alternative M/D/1 performance model that enhances the SIP Proxy Server performance.
Sureshkumar V. Subramanian - One of the best experts on this subject based on the ideXlab platform.
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Measuring SIP Proxy Server Performance
2013Co-Authors: Sureshkumar V. Subramanian, Rudra DuttaAbstract:Internet Protocol (IP) telephony is an alternative to the traditional Public Switched Telephone Networks (PSTN), and the Session Initiation Protocol (SIP) is quickly becoming a popular signaling protocol for VoIP-based applications. SIP is a peer-to-peer multimedia signaling protocol standardized by the Internet Engineering Task Force (IETF), and it plays a vital role in providing IP telephony services through its use of the SIP Proxy Server (SPS), a software application that provides call routing services by parsing and forwarding all the incoming SIP packets in an IP telephony network. SIP Proxy Server Performance closely examines key aspects to the efficient design and implementation of SIP Proxy Server architecture. Together, a strong design and optimal implementation can enable significant enhancements to the performance characteristics of SPS. Since SPS performance can be characterized by the transaction states of each SIP session, the book analyzes an existing M/M/1-network performance model for SIP Proxy Servers in light of key performance benchmarks, such as the average response time for processing the SIP calls and the average number of SIP calls in the system. It also presents several other real-world industrial case studies to aid in further optimizations. This book is intended for researchers, practitioners and professionals interested in optimizing SIP Proxy Server performance. Professionals working on other VoIP solutions will also find the book valuable.
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A study of performance and scalability metrics of a SIP Proxy Server - a practical approach
Journal of Computer and System Sciences, 2011Co-Authors: Sureshkumar V. Subramanian, Rudra DuttaAbstract:In recent years, Internet Protocol (IP) telephony has been a real alternative to the traditional Public Switched Telephone Networks (PSTN). IP telephony offers more flexibility in the implementation of new features and services. The Session Initiation Protocol (SIP) is becoming a popular signalling protocol for Voice over IP (VoIP) based applications. The SIP Proxy Server is a software application that provides call routing services by parsing and forwarding all the incoming SIP packets in an IP telephony network. The efficiency of this process can create large scale, highly reliable packet voice networks for service providers and enterprises. We established that the efficient design and implementation of the SIP Proxy Server architecture can enhance the performance characteristics of a SIP Proxy Server significantly. Since SIP Proxy Server performance can be characterised by its transaction states of each SIP session, we emulated the M/M/1 performance model of the SIP Proxy Server and studied some of the key performance benchmarks such as average response time to process the SIP calls, and mean number of SIP calls in the system. We showed its limitations, and then studied an alternative M/M/c based SIP Proxy Server performance model with enhanced performance model and studied additional key performance characteristics such as Server utilisation, queue size and memory utilisation. Provided the comparative results between the predicted results with the experimental results conducted in a lab environment.
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comparative study of m m 1 and m d 1 models of a sip Proxy Server
Australasian Telecommunication Networks and Applications Conference, 2008Co-Authors: Sureshkumar V. Subramanian, Rudra DuttaAbstract:In recent years, transmission of packets over Internet has been a real alternative to the traditional Public Switched Telephone Networks (PSTN). The Internet protocol (IP) offers more flexibility in the design and implementation of features and services. The session initiation protocol (SIP) is a commonly adopted signaling protocol for Voice over IP (VoIP) by many telecommunication industries. Since the signaling system of PSTN, signaling system number 7 (SS7) was designed for high reliability, but IP works on the "best effort" basis which motivated us to study the performance characteristics of SIP control plane. In this paper, we studied an M/M/1 performance model of the SIP Proxy Server, showed its limitations, and designed an alternative M/D/1 performance model that enhances the SIP Proxy Server performance.
John K. Duke - One of the best experts on this subject based on the ideXlab platform.
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Authenticating users inside and outside the library: implementing a Proxy Server
Internet Reference Services Quarterly, 1999Co-Authors: John K. DukeAbstract:Libraries supporting digital resources must provide access to proprietary databases for off-campus users. It is also often important to restrict access to given databases or to classes of users from within the library. Vendors usually control access through some combination of Internet Protocol (IP) address and user ID and password. The process of authenticating and authorizing users creates an access management system. One of the most effective means for implementing an access management system today is through a Web Proxy Server. The technique for setting up the Netscape Proxy Server is described, along with the Proxy Server's advantages and disadvantages.
Zhiling Yang - One of the best experts on this subject based on the ideXlab platform.
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ICCSA (2) - A Scalable Streaming Proxy Server Based on Cluster Architecture
Computational Science and Its Applications – ICCSA 2004, 2004Co-Authors: Hai Jin, Jie Chu, Kaiqin Fan, Zhi Dong, Zhiling YangAbstract:With the explosive growth of multimedia streaming service, streaming Proxy Server is deployed to reduce response time, Server load and network traffic. Existing single node Proxy Server has limitation on delivering many simultaneously streams. To solve this problem, in this paper, we propose a scalable streaming Proxy Server based on cluster architecture. We conduct some simulation experiments, which exhibit high scalability and high performance with our design.
