Optical transmission is getting more popular in the access network due to the increasing demand for bandwidth. The most advertised transport solutions for the optical access are Ethernet based PON (EPON) and Gigabit-capable PON (GPON), and the problem is which one to choose when establishing a new access network. This paper studies the network cost of EPON and GPON and bases the comparison on the link utilization.
A diverse set of networking technologies have been trialed in developing transport solutions for tomorrow S multimedia services. Due to the various objectives, those services are foreseen to be carried over multiparty networks, based on different transport technologies. Therefore, smooth service supply requires that operators support multiple transport systems or at least offer inter-connectivity between them. This means that parallel network nodes (e.g. switches) must be maintained for those network, which rises operational cost. A solution to lower the number of switches and networking cost is to combine different switching disciplines into a compact hybrid switch. A basic component for successive implementation of such a switch is the switching bus. Its interconnection architecture determines inherent capabilities cfthe system to fu@l the various requirements of multime,dia switching. This paper studies dimensioning and resource sharing mechanisms of shared bus architectures to apply them in multidiscipline switching.
This article surveys some interconnection networks, especially rings, utilized in broadband switching and compares their transfer delay performance. Special attention is paid on a ring, named Frame Synchronized Ring (FSR), which is developed for high speed switching and experimented as an ATM-switch. The study concentrates on analysing the transfer delay performance of the switching architectures to compare the rings with the other introduced switch structures (i.e. multidrop bus, crossbar, and multistage banyan network). The analysis is followed by some characteristics and experiments with the FSR.
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