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In page Telecommunications in China:

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In the years immediately following 1949, telecommunications – by telegraph or telephone – mainly used wire; by the 1970s, however, radio telecommunications equipment were increasingly used and began to replace wire lines. Microwave and satellite transmissions were soon introduced and have now become common. (China launched its first television-broadcast satellite in 1986.) In 1956 the first automatic speed Teletype was installed on the Beijing-Lhasa line. By 1964 such machines had been installed in most of China's major cities. Radio-television service also was installed in major cities, and radio teleprinters became widely used.[citation needed]