本标准描述的分组协议允许一个设备通过单个点对点链路与另一个设备进行多个并发的数据和/或控制信息交换。该协议不是一种设备控制语言。该协议提供基本的传输级流控制和多路复用服务。多路信息交换是独立的，一个信息交换的阻塞对其他信息交换没有影响。该协议应在IEEE 1284-1994接口上运行，并可在其他点对点接口上运行。

The packet protocol described by this standard allows a device to carry on multiple, concurrent exchanges of data and/or control information with another device across a single point-to-point link. the protocol is not a device control language. The protocol provides basic transportlevel flow control and multiplexing services. The multiplexed information exchanges are independent and blocking of one has no effect on any other. The protocol shall operate over IEEE 1284-1994 interfaces and may operate over other point-to-point interfaces.