随着无线和有线网络逐步从 话音和低速数据领域转移到高速多媒体应用，以及电路交换网络和分组交换网络的融合，ＯＥＭ设计者发现自己面临着一些令人困惑、互相冲突的约束。一方面要求他们能够迅速捕捉越来越细化的市场机会，与此同时还要使其设计同时满足目前和未来的需求。例 As wireless and wireline networks move from voice and low-speed data to high-speed multimedia applications and the convergence of circuit-switched networks and packet-switched networks, OEM designers find themselves confronted with some confusing and conflicting constraints. On the one hand, they are required to be able to rapidly capture increasingly detailed market opportunities while at the same time designing their designs to meet both present and future needs. example