介绍在ISO 8802局域网（LAN）上运行的ISO 8280中定义的X.25压缩级协议（PLP）的使用。第2节描述了使用逻辑链路控制（LLC）类型2程序的X.25/PLP的操作。第3节规定了使用LLC 1类程序的X.25/PLP的操作。按照ISO 7498:1984标准使用；ISO 8208:1987；ISO 8208/Add。1:ISO 8343/Add。2:1988; ISO 8802-2；ISO 8878:1987；ISO/IEC/TR 10029:1989。

Deals with the use of the X.25 Packed Level Protocol (PLP) as defined in ISO 8280 operating over ISO 8802 Local Area Networks (LANs). The operation of the X.25/PLP using the Logical Link Control (LLC) Type 2 procedures is described in section 2. The operation of the X.25/PLP using the LLC Type 1 procedures is specified in section 3. To be used in compliance with the standards ISO 7498:1984; ISO 8208:1987; ISO 8208/Add. 1: ISO 8343/Add. 2:1988; ISO 8802-2; ISO 8878:1987; ISO/IEC/TR 10029:1989.