Mansour J. Karam

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As the Internet evolves into a ubiquitous communication infrastructure and provides various services including telephony, it will be expected to stand up to the toll quality standards set by traditional telephone companies. Our objective in this paper is to assess to what extent today’s Internet is meeting this expectation. Our assessment is based on delay(More)
As the Internet evolves into a ubiquitous communication infrastructure and provides various services including telephony, it will be expected to meet the quality standards achieved in the public switched telephone network. Our objective in this paper is to assess to what extent today's Internet meets this expectation. Our assessment is based on delay and(More)
In the future, voice communication is expected to migrate from the public switched telephone network to the Internet. Because of the particular characteristics (low volume and burstiness) and stringent delay and loss requirements of voice traffic, it is important to separate voice traffic from other traffic in the network by providing it with a separate(More)
In the future, voice communication is expected to migrate from the Public Switched Telephone Network (PSTN) to the Internet. Because of the particular characteristics (low volume and burstiness) and stringent delay and loss requirements of voice traffic, it is important to separate voice traffic from other traffic in the network by providing it with a(More)
As the Internet evolves into a universal network for all communication needs, it has to stand up to the high quality standards of traditional networks, such as the telephone network for voice communications. Multimedia applications are particularly sensitive to various impairments introduced by IP networks, such as packet loss, delay and delay jitter. In(More)
The current best-effort infrastructure in the Internet lacks key characteristics in terms of delay, jitter, and loss, which are required for multimedia applications (voice, video, and data). Recently, significant progress has been made toward specifying the service differentiation to be provided in the Internet for supporting multimedia applications. In(More)
A buffer management scheme destined to be deployed in Internet routers should provide an adequate handling of all traffic types, including UDP and TCP traffic as well as fairness among competing flows. In core routers, keeping per-flow state and taking per-flow actions is strongly discouraged, because of the scalability issues that ensue. Consequently, CSFQ(More)
Multimedia applications are those which involve multiple media types including audio, video, and still images, in addition to the more conventional data types. Many such applications are distributed in nature and involve networking and communications. Examples of such applications are: video-on-demand (VoD) for training, education and entertainment;(More)
As new services requiring multicast communications become more common, the deployment of selective multicasting in bridged LANs becomes essential. The GARP/GMRP protocol, defined in the IEEE 802.1p standard, addresses this issue. The performance of this protocol depends heavily on the values of the various timers that control it. In this paper we study the(More)
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