BS 6450-4-1993 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
BS 6450-4-1993 标准详情
- 标准号:BS 6450-4-1993
- 中文标题: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
- 英文标题:private branch exchanges for connection to public switched telephone networks run by certain public telecommunications operators. specification for ports
- 标准类别:英国标准
- 发布日期:1993-12-15
内容简介
1 This Part of BS 6450 specifies requirements for private branch exchanges (PBXs) having ports that may be connected to one or more of the following:a) two or more public exchange lines;b) private leased circuits run by a public telecommunications
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