本标准定义了ESlan-1物理层、数据链路层、网络层、传输层和会话层中包含的服务和协议。ESlan-1是一个用于电视和音频节目制作、后期制作和分发设备的控制和数据网络。ESlan-1适用于需要适度性能水平的中小型设施。SMPTE目前正在进行一项研究，以确定ESlan-1安装规模的限制参数。本标准应与SMPTE EG 29、SMPTE EG 30以及第2条和附录C中列出的其他文件一起阅读。

This standard defines the services and protocols contained within the physical, data link, network, transport, and session layers of ESlan-1, a control and data network for use in television and audio program production, post-production, and distribution equipment. ESlan-1 is intended for application in small- to moderate-sized facilities requiring modest levels of performance. A study to determine limiting parameters on the size of ESlan-1 installations is currently being undertaken by the SMPTE.This standard is to be read in conjunction with SMPTE EG 29, SMPTE EG 30, and with other documents listed in clause 2 and annex C.