这些设备各种各样，包括 IP 及模拟电话、PDA、 机顶盒（Set-Top Box，STB）、PC、DSL 或家庭网关（Residential Gateway）调制解调器、无线接入点（Wireless Access Point）路由器、TV 等。
These devices are heterogeneous and includes IP and analog phones, PDAs, set-top boxes (STB), PCs, DSL or Residential Gateway modems, Wireless Access Point routers, TVs, and so on.
鉴于此，可以把家庭网关作为VOD的广义客户端设备，其任务是负责流媒体的编解码和传输控制。
According to this, we take the Home GateWay as the extensive client of VOD, and use the Home GateWay to transmit, code and decode the Multimedia Stream.
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