SS 63 63 21 Ed. 2 标准详情
- 标准号:SS 63 63 21 Ed. 2
- 中文标题:电信设备 - 专用分组交换机(PBX ) - 附件的要求,信令特性的模拟连接到公共交换电话网络(PSTN )
- 英文标题:Telecommunications Equipment - Private Branch Exchanges (pbxs) - Attachment Requirements, Signalling Characteristics For Analogue Connection To A Public Switched Telephone Network (pstn)
- 标准类别:新加坡SS
- 发布日期: