NGN
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www.kangnung.ac.kr - 2010-07-25
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www.openvoip.cn - 2010-03-05
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www.wlanfans.com - 2010-03-05
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www.telecom365.com.cn - 2010-03-03
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www.chinacie.com.cn - 2010-03-03
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www.voipchina.cn - 2010-03-03
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www.cww.net.cn - 2010-03-03
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www.cctime.com - 2010-03-03
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www.cnii.com.cn - 2010-03-03
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www.c114.net - 2010-03-03