Standard Number: YD/T 907-2011(YD/T907-2011)
Chinese:接入电话网的电话机和其它设备上用于发号的数字、字母和符号规定
English:Provisions for numbers, letters and symbols used for issuing numbers on telephones and other equipment connected to the telephone network
Effective Date:2011-06-01
Standard Applicability:
PDF Downloadable: N
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