1999/303/EC: Commission Decision of 12 April 1999 on a common technical regulation for connection to the analogue public switched telephone networks (PSTNs) of terminal equipment supporting the voice telephony justified case service in which network addressing, if provided, is by means of dual tone multi-frequency (DTMF) signalling (notified under document number C(1999) 874) (Text with EEA relevance)
1999/303/EC:1999年4月12日委员会关于支持语音电话合理案例服务的终端设备连接到模拟公共交换电话网络(PSTN)的通用技术法规的决定 其中网络寻址(如果提供) 通过双音多频(DTMF)信号传输(根据文件编号C(1999)874通知)(具有EEA相关性的文本)
1999/303/EC: Commission Decision of 12 April 1999 on a common technical regulation for connection to the analogue public switched telephone networks (PSTNs) of terminal equipment supporting the voice telephony justified case service in which network addressing, if provided, is by means of dual tone multi-frequency (DTMF) signalling (notified under document number C(1999) 874) (Text with EEA relevance)