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标准名称：	交换机ISDN用户接口在线监测功能
英文名称：	Switch ISDN user interface on line monitor function
中标分类：	通信、广播 >> 通信网 >> 通信网性能指标及测试
发布部门：	中华人民共和国信息产业部
发布日期：	2000-05-31
实施日期：	2000-10-01
首发日期：	1900-01-01
作废日期：	1900-01-01
提出单位：	信息产业部电信研究院
归口单位：	信息产业部电信研究院
起草单位：	信息产业部电信传输研究所
起草人：	杜森、王彦芳
出版社：	人民邮电出版社
出版日期：	2000-10-01
页数：	12页

本标准规定了具备ISDN功能的程控交换机，通过ISDN基本速率用户接入接口（‘U’接口），对处于运行状态下使用金属对称线对的基本速率接入数字段的基本状态和性能进行监测时所必须具备的监测功能和能力（在线监测）。其中包括：（1）ISDN基本速率第1类网络终端（NT1）与用户线的连接状态；（2）基本速率接入数字段的激活/去激活功能；（3）ISDN基本接入用户数字传输系统的传输质量；（4）ISDN基本接入用户数字段传输系统传输中断指示；（5）供电工作状态。本标准是对具备ISDN功能的程控交换机及其相关配套设备（例如：NT1，NT1+等）选型、入网检测、运行操作的依据之一。

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MIL-STD-881C, DEPARTMENT OF DEFENSE STANDARD: WORK BREAKDOWN STRUCTURES (WBS) FOR DEFENSE MATERIEL ITEMS (DRAFT - 14 JAN 2011)., This Standard is approved for use by all Departments and Agencies of the Department of Defense. It is for direction and should be included as a contract requirement.2. This Standard addresses mandatory procedures for those programs subject to DoD Instruction 5000.02. It also provides direction to industry in extending contract work breakdown structures.3. A Work Breakdown Structure (WBS) provides a consistent and visible framework for defense materiel items and contracts within a program. This Standard offers uniformity in definition and consistency of approach for developing all levels of the WBS. The benefit of uniformity in the generation of work breakdown structures and their application to management practices will be realized resulting in improved communication throughout the acquisition process.4. This Standard is an update to MIL-HDBK-881A, Work Breakdown Structures for Defense Materiel Items. MIL-STD-881C is based on the cooperative efforts of the military services with assistance from industrial associations. Changes to the Standard specifically address the advances in technology, modification of the acquisition process, and incorporation of new materiel items, developmental concepts, and approaches.