本国际标准的范围是: 在介质访问控制（MAC）子层和物理层（PHY）开发ISLAN接口 层与IEEE 802兼容。x1和ISDN标准和体系结构 ？开发独立于主干网运行的ISLAN接口 ？重点关注非屏蔽双绞线作为主要分配介质 ？启用访问IEEE 802 LAN和ISDN的IS终端设备（ISTE）的实现 通过公共接口提供服务

The scope of this International Standard is to — Develop an ISLAN interface at the medium access control (MAC) sublayer and the Physical (PHY) Layer compatible with IEEE 802.x1 and ISDN standards and architectures — Develop an ISLAN interface that operates independently from the backbone network — Focus upon unshielded twisted-pair wiring as the primary distribution medium — Enable implementation of IS terminal equipment (ISTE) that accesses IEEE 802 LAN and ISDN services through a common interface