The IETF Internet telephony architecture and protocols

Schulzrinne, Henning; Rosenberg, Jonathan

doi:10.1109/65.767133

Cited by 47 publications

(17 citation statements)

References 20 publications

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“…In order to simplify the discussion, we assume here that the QoS that is to be partitioned is the average packet delay through the network. This is particularly relevant to the case of VoIP [44] where packet delay is the prime QoS constraint. Much of the modeling and analysis given in this context applies equally well to other measures of QoS as long as they are approximately additive on a path.…”

Section: Delay Partitioningmentioning

confidence: 98%

On the advantages of optimal end-to-end QoS budget partitioning

2007

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We investigate the optimal partitioning of the end-to-end network QoS budget to quantify the advantage of having a non-uniform allocation of the budget over the links in a path. We formulate an optimization problem that provides a unified framework to study QoS budget allocation. We examine the underlying mathematical structure for the optimal partitioning and dimensioning equations. In the context of network dimensioning, we then show that optimal partitioning can bring large cost reductions as compared with equal partitioning based on the results on small networks.More importantly, we also find that optimal partitioning gives significant improvements in robustness in the presence of failed components and in fairness when the traffic demand is different from the forecast, two effects that had not been observed in previous work and that can have a significant effect on network operations.

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Section: Delay Partitioningmentioning

confidence: 98%

On the advantages of optimal end-to-end QoS budget partitioning

2007

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“…Figure 2, SIP [8] is the currently widely used signaling standards for VoIP call setup and management (e.g., registration, resource administration, status, and capability exchange). Session description protocol (SDP) [21] is SIP's companion protocol to explicitly present parameters of functions applied in call setup and session management, such as the key exchange information for negotiating secret key for DH signaling.…”

Section: Privacy Protection For Iptvmentioning

confidence: 99%

“…In this paper, we apply SIP protocol [8] to construct an application-layer multicast (ALM) overlay network, which is called SIPTVMON, with privacy protection, load balancing, and stability for IPTV to overcome the disadvantages previously mentioned in P2P video-streaming systems. Our contributions in proposed SIPTVMON for IPTV service are summarized as follows.…”

Section: Introductionmentioning

confidence: 99%

A Secure and Stable Multicast Overlay Network with Load Balancing for Scalable IPTV Services

Wei

Wang

Chu

et al. 2012

International Journal of Digital Multimedia Broadcasting

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The emerging multimedia Internet application IPTV over P2P network preserves significant advantages in scalability. IPTV media content delivered in P2P networks over public Internet still preserves the issues of privacy and intellectual property rights. In this paper, we use SIP protocol to construct a secure application-layer multicast overlay network for IPTV, called SIPTVMON. SIPTVMON can secure all the IPTV media delivery paths against eavesdroppers via elliptic-curve Diffie-Hellman (ECDH) key exchange on SIP signaling and AES encryption. Its load-balancing overlay tree is also optimized from peer heterogeneity and churn of peer joining and leaving to minimize both service degradation and latency. The performance results from large-scale simulations and experiments on different optimization criteria demonstrate SIPTVMON's cost effectiveness in quality of privacy protection, stability from user churn, and good perceptual quality of objective PSNR values for scalable IPTV services over Internet.

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“…Meanwhile, to meet the demands of The Session Initiation Protocol (SIP) is an application-level control protocol for establishing, modifying, and terminating multimedia sessions between multiple participants [30,31,33,34]. Because it is an application-level protocol in the Internet Protocol (IP)-based suite, SIP is independent of any form of physical network and is capable of offering seamless service capabilities between fixed and mobile networks.…”

Section: Introductionmentioning

confidence: 99%