ATM edge devices deconstruct either an MPEG-2 multiple program transport stream (MPTS) or single program transport stream to the program level and ultimately to the packet-identifier (PID) level.

• ATM边缘设备或是把MPEG-2多程序传输流（MPTS）或是把单一程序传输流分解到程序级、最终到包识别符（PID）级。