Saturday, September 7, 2019

Q5 Essay Example | Topics and Well Written Essays - 1000 words

Q5 - Essay Example ate and likely to be useful in a less developed country such as Chad where access to electrical grids may not be feasible due to geographical problems and in remote locations where establishing electric connections may be expensive.(www.electricityforum.com). It is also expensive to develop such grids and Chad is a poor country where substantial expenses on these developments may not be possible. But sunlight is a commodity available in plenty in this country, and this can be harnessed to generate solar power to operate cell phones and enhance communications. Such relay stations are already in use in the U.K., where grids connect PV systems are integrated into office buildings and connected to the local solar electricity network. They are used in monitoring stations, radio repeater stations, telephone kiosks and for street lighting. Solar powered relay stations were installed by the Israeli Government in 2005, all along Israeli highway no: 2 to provide electrical power for cellular phones using the energy harnessed from the sun and assimilated into the microwave relay stations. 2. Voice over Internet protocol helps in enabling voice communications through the use of IP networks such as the Internet. It offers the facility of telephony services, i.e, the facility of making and receiving calls from regular telephone lines using a computer (Wallingford, 2005). The only requirement is the availability of a broadband connection which facilitates good sound transmission quality and in the case of telephony services such as Skype, even allows chatting and calling applications in computers with firewalls that normally break such applications. As a result, it brings about a substantial reduction in the cost of making telephone calls. VoIP systems also allow for a converge of voice and data networks. The VoIP facility is useful to a knowledge worker because it enables fast and easy communication lines to be established to and from any part of the world. A knowledge

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