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1949年北京解放时,市内电话交换机容量仅有2.63万门,市内电话用户1.7万多户,市区电话普及率为0.84部/百人。党的十一届三中全会以后,加快了发展速度。截至1987年市内电话交换机容量达到29.7万门,比1978年增加20.25万门,相当于前29年年平均数的10.7倍。全部电话机总数(含用户小交换机的话机)54.89万部,电话普及率全市平均5.55部/百人,其中:市区平均9.18部/百人,比1978年的4.02部/百人增长2.28倍。市区电话共有54个局号,40处局所。26.8万门交换机总容量中,程控电话占19个局号、11.4万门,为交换机总容量的42.5%。在建的引进法国10万门工程,今年全部投产后,程控交换机将达到14.1万门,占交换机总容量的52%,将基本复盖北京市区和大部分近郊区。
When Beijing was liberated in 1949, the city’s telephone exchange capacity was only 26,300, with more than 17,000 telephone subscribers in the city and 0.84 telephones per 100 people in urban areas. After the Third Plenary Session of the 11th CPC Central Committee, the pace of development has been accelerated. As of 1987, the city’s telephone exchange capacity reached 297,000, an increase of 202,500 over 1978, equivalent to 10.7 times the annual average of the previous 29 years. The total number of telephone sets (including telephone exchanges for users) was 548900 with an average of 5.55 telephones / 100 telephones in the city, of which: 9.18 urban areas per 100 persons, 2.28 times more than 4.02 / 100 persons in 1978. A total of 54 urban telephone number, 40 offices. Of the 268 million switchboards, the program-controlled phones account for 19 office numbers and 114,000, accounting for 42.5% of the switch’s total capacity. The construction of the introduction of France 100000 projects, put into operation this year, the program-controlled switches will reach 141,000, accounting for 52% of the total switchboard capacity, will basically cover the urban area and most of the suburbs.