The telecommunication industry is concerned about the energy costs of its operating infrastructure, and the associated greenhouse gas emissions. At present, more than half of the total energy consumption of data centers is for the power and cooling infrastructure that supports the storage and communication equipment. One method of reducing energy consumption is an approach called ―free air cool...

The objectives of the paper is to review the conflicting requirements and needs of existing telecommunication network testing approaches, services and equipment, in order to provide a simple but powerful solution that allows automated and standardized testing activities. We present in the paper a progressive transition from the current proprietary practices, to a distributed and fully TMN compl...

Modern telecommunication equipment differs quite significantly from equipment used in the past. While in traditional networks the behaviour of each transmission channel was deterministic, modern transmission systems may behave nonlinear and time variant even during a call. Signal processing is used extensively, mostly at the end points of a connection. The impairments introduced by the transmis...

The performance of dataand telecommunication equipment must keep up with the increasing network speed. At the same time, one must deal with the internal interconnection complexity, often growing exponentially with the number of ports. Therefore, new interconnection technologies to be used internally in the equipment are needed. Optical interconnection technology is a promising alternative and m...

The computer and telecommunication industries rely heavily on knowledge-based expert systems to manage the performance of their networks. These expert systems are developed by knowledge engineers, who must first interview domain experts to extract the pertinent knowledge. This knowledge acquisition process is laborious and costly, and typically is better at capturing qualitative knowledge than ...

Using formal methods, namely model checking, we can automatically verify a formal model of the requirements against given properties. This allows us to detect errors early an the design process, thus decreasing development cost and t ime t o market. However to modi fy a well established design process t o introduce formal methods is not easy. W e present a case study exploring the possibility o...