中国铁通日前与亚信正式签订合同，由亚信承建全国IP骨干网（CRNet二期工程建设项目）。该网是一个全国性的以宽带IP技术为核心的高速宽带网络，用于开 放语音、图像、传真和数据等全方位的高品质的电信业务。工程完工后，该网络的覆盖范围将从目前的３６个城市扩大到全国１２ China TieTong formally signed a contract with AsiaInfo to construct the national IP backbone network (CRNet Phase II Construction Project) by AsiaInfo. The network is a nationwide high-speed broadband network with broadband IP technology as the core to open up a full range of high quality telecommunications services such as voice, image, fax and data. After the completion of the project, the coverage of the network will be expanded from the current 36 cities to 12 across the country