Giacomo Bruzzi

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A switch model for ATM networks is analyzed in this paper. Its interconnection network is internally nonblockhsg and is provided with dedicated input and output queues, one per switch inlet and one per switch outlet. The switch operates with an internal speed-up, meaning that more than one packet per slot CM be transfered from the head-of-line positions of(More)
 This paper outlines trends reshaping the business of International Long Distance (ILD) voice minutes trading. Our analysis is centered on Arbinet’s business model: an electronic market-place for trading ILD voice minutes. Arbinet, who adopted a minute-based termination model, claims to have switched about 12×10 minutes in 2005 with 13% growth. Since 2003,(More)
⎯ This paper studies the impact of peer-to-peer (p2p) applications on network operators. P2p applications affect the way network resources are used, changing traffic behaviour at access, edge and peering levels. In particular, they make up overlay networks with topology decoupled from the underlying physical networks: a consequence is inefficiency and(More)
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