Digital Exchange Design Objectives - Operations and Maintenance - Digital Local Transit Combined and International Exchanges in Integrated Digital Networks and Mixed Analogue-Digital Networks - Supplements (Study Group XI) 21 pp
标准号:ITU-T Q.542-1989
标准名称: 数据交换设计目标-局部数据,联合,传输和国际交换
英文名称:Digital Exchange Design Objectives - Operations and Maintenance - Digital Local Transit Combined and International Exchanges in Integrated Digital Networks and Mixed Analogue-Digital Networks - Supplements (Study Group XI) 21 pp
标准类型:国外标准
标准状态:现行
中国标准分类号(CCS):M32
国际标准分类号(ICS):35.200