The phone is a device of telecommunication, which is designed to transmit acoustic signals through electrical signals, allowing the transport of voice through long distances, shortening them in an incredible way. Fixed telephony, as we know it has undergone few changes over the course of its history, since if it had represented a technological leap of very high importance for the time. Its home application, but above all, use that make telephone service companies, has boosted its expansion and has facts that almost any point of the globe with commercial movement can say that it dispenses with the same. With globalization, international communications ceased to be one thing few and transformed into a necessity for any business venture. Costs, in some cases prohibitive of a call made in traditional fixed telephony, avoided that many companies are launched at global level. This state of affairs come to be changed by the use of the voice by IP. This new technology, which is booming in the United States and throughout Europe, consists of transmitting voice using internet, a fast, free way and with a very low initial investment. And what is more interesting still, reduces the costs of internal communication within a company to zero, regardless of whether it has offices in Japan, New York and Spain. Thus, the IP telephony represents new features of the traditional fixed telephony, which maintains the comfort of instantaneity and adds some other benefits, such as speed and the Elimination of economic costs, in addition to the abolition of the wiring, leaving the possibility of translation of the furniture of the company unlimited. IP voice technology presents this way, bid on telecommunications to any single company had dreamed of. Original author and source of the article
On the other hand, the continued formation reveals of extreme relevance to cure gaps in the knowledge of the professors, also how much to the metodolgicas Astronomy and strategies to approach it in classroom. A way to generate positive impact on the formation of the professors is offers of courses, seminaries, workshops and other activities by means of partnerships between University, Secretariats of Education and centers of education not-deeds of division, the astronomical and planetary example of museums of Science, astroroofs. Gratefulness the authors leave express its sincere gratefulness to the following institutions and people, without which the present work would not have been possible: to the Astronomical Polar region Casimiro Montenegro Son and its team, especially to the coordinator Janer Vilaa, for the incentive; to the professors and licenciandos of the participant course of Pedagogia of the research. .