中国航天工业总公司三院239厂引进生产的德国西门子公司HICOM系列程控数字用户交换机是国家定点引进及生产的最新一代优选机型。HICOM程控数字用户交换机的容量为100门到1.6万门。是用于工矿企业、饭店、宾馆、机关院校等单位的内部话音、文本、数据、图像通讯的通信交换机,它最适合于办公自动化单位的通信要求,也可用于象油 HACOM series program-controlled digital subscriber exchangers, which are introduced by China Aerospace Industry Corporation Hanyang 239 Factory, are the latest generation preferred models introduced and produced by the state. HICOM program-controlled digital subscriber exchange capacity of 100 to 16,000. Is used for industrial and mining enterprises, restaurants, hotels, institutions and other units of internal voice, text, data, image communications communications switch, which is most suitable for office automation unit of communication requirements, can also be used for oil