Private branch exchanges for connection to public switched telephone networks run by certain public telecommunications operators - Specification for ports
标准号:BS 6450-4-1993
标准名称: 由公共电话操作人员控制的公共交换电话网络连接用个人分支交换站.总站规范
英文名称:Private branch exchanges for connection to public switched telephone networks run by certain public telecommunications operators - Specification for ports
标准类型:国外标准
标准状态:现行
发布日期:1993-12-15
实施日期:1993-12-15
中国标准分类号(CCS):M40
国际标准分类号(ICS):33.040.30
替代以下标准:BS 7378-3-1998