In the data plane,64K and Nx64K bit/sec voice and video bit streams need to be translated into IP packets or ATM cells,preserving the synchronous nature of these streams all the way to the desktop.

• 在数据面，64K和Nx64K比特/秒的话音和视频位流需要转换成IP包或ATM信元，在向桌面系统传送的每一路上要保留这些比特流的等时性质。