Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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YD/T 1263-2003 Technical Requirements for Interworking of network Based on IP with traditional telecommunication network 270.0 via email in 1~3 business day valid
GB/T 29200-2012 Test method for public telecommunication network equipments security—Calling party number information 430.0 via email in 1~3 business day valid
YD/T 1535-2006 Technical Requirements of Equipment Security for PSTN-Calling Number Information 240.0 via email in 1~3 business day valid
GB/T 29228-2012 Technical requirements for public telecommunication network equipments security—Calling party number information 200.0 via email in 1~3 business day valid
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