本文档定义了一个可供有线电视系统运营商使用的容器，用于将紧急警报（EA）元数据传送到消费者领域。该元数据旨在通过提供家庭中此类数字媒体服务器（DMS）所需的基于XML的预格式化EA数据，支持作为“商业视频服务”（CVS）服务器的有线电视机顶盒终端进入家庭网络。指定为ANSI J-STD-042-A[2]描述符形式的容器仅用于ANSI J中定义的紧急警报信号消息内的运输- STD-042-A[2]。

This document defines a container usable by cable system operators for the delivery of Emergency Alert (EA) metadata into the consumer domain. This metadata is designed to support cable set-top terminals which function as servers of "commercial video services" (CVS) into the home network, by providing preformatted XML-based EA data required by such Digital Media Servers (DMS) in the home. The container, specified as being in the form of an ANSI J-STD-042-A [2] descriptor, is defined only for carriage within the emergency alert signaling message defined in ANSI J-STD-042-A [2].