文件名称:DTMF_CallerID
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DTMF制式主叫号码显示规范，本规程适用于能够接收和显示交换机以 DTMF 方式传送的主叫号码的电话机或附加装
置-Caller ID display DTMF standard specification, the rules apply to telephone or additional devices can receive and display switches to DTMF mode of transmission of Caller ID
置-Caller ID display DTMF standard specification, the rules apply to telephone or additional devices can receive and display switches to DTMF mode of transmission of Caller ID
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中国DTMF制式来电显示国标.pdf