在即将开始的铁通公司电话交换网扩容改造一期工程中,上海贝尔和北京贝尔承担了该项工程中全部的长途网项目,并承担了北京、天津、石家庄、太原本地网建设项目。其中长途网工程将覆盖全国34个城市,总容 In the first phase of expansion project of China Railcom telephone exchange network, Shanghai Bell and Beijing Bell undertook all the long distance network projects in the project and undertook the construction projects of local networks in Beijing, Tianjin, Shijiazhuang and Taiyuan. One long-distance network project will cover 34 cities in the country, the total capacity