企业在建立自己的网络,特别是要将各地分支机构的网络通过广域网(WAN)互连起来时,必须依赖于国际数据通讯运营公司来提供增值网络(LAN)服务。与采购一般的网络设备与服务不同,与这类运营商作交易,企业用户们往往会发现他们花费一大笔钱而得到的却并不等于所付出的代价。要想以实惠的价格获得良好的服务与支持及性能上的保证,最关键的便是要了解自己的需求。从表面上看,供应商们声称 Businesses must rely on IDCs to provide value-added network (LAN) services when establishing their own networks, and in particular by interconnecting networks across branch offices across wide area networks (WANs). Unlike purchasing networked devices and services in general, trading with such operators often means that business users get a large sum of money at a price that is not equal to the price they paid. In order to obtain good service and support at affordable prices and performance assurance, the key is to understand their needs. On the surface, suppliers claim