【摘要】 随着 ATM技术和信源编码技术的成熟 ,使得视听业务的广泛应用成为可能。主要讨论了恒定比特率或可变比特率的 MPEG- 2网络上的传输而引出的适配层的选择、MPEG- 2帧的封装、ATM业务类型的选择以及时延与抖动的控制 ,接受方如何恢复时钟与实现帧同步等问题更多还原

【Abstract】 The growth of Asynchoronous Transfer Mode(ATM) technology and the maturity of coding standards have made possible the large scale deployment of highquality audio visual services. In this article, the authors discuss the principal issues involved in transporting MPEG 2 streams over ATM networks for both constant bit rate(CBR) and variable bit rate(VBR) MPEG 2 transport streams which include the choice of adaptation layer, method of encapsulation of MPEG 2 packets in AAL packets, selection of service class in the ATM network for control of delay and jitter, and methods for clock recovery and stream synchronization at the receiver.更多还原