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International Standard Category: Telephone networks

YD/T 1535-2006    Technical Requirements of Equipment Security for PSTN-Calling Number Information
公用电信网设备安全技术要求--主叫用户号码信息;
Category No.:33.040.35 Valid Status:valid
Issued Organization: Issued Date:2006-12-11
Implemented Date:2007-1-1 Abolished Date:
Superseded Standard.: Superseded Date:
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