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传真通信作为一种现代化的通信手段,已经广泛应用于社会各个领域,随着科学技术的不断发展,作为传真通信终端设备的传真机也已从当初的在公用电话网上使用的一、二、三类传真机,发展到今天在公用数据网上使用的四类传真机。四类传真机与一、二、三类传真机相比,不仅传输速度快,功能强,接收副本质量好,而且已经完全数字化和计算机化,所以、一部独立的四类传真机,可以认为是一部专用的计算机。 1984年,现国际电信联盟(原CCITT国际电报电
As a modern means of communication, facsimile communication has been widely used in all fields of society. With the continuous development of science and technology, facsimile machines as the facsimile communication terminal equipment have also evolved from the original one, two, three Class fax machines, developed to today’s public data network using four types of fax machines. Compared with the first, second and third types of facsimile machines, the fourth type of facsimile machine not only has the advantages of fast transmission speed, strong function, good receiving copy quality, but also complete digitization and computerization. Therefore, an independent four-type facsimile machine can be considered as Is a dedicated computer. In 1984, the International Telecommunication Union (formerly CCITT International Telegraph and Telephone