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Description: NGN下SIP穿越技术资料（NGN tunnel by sip）
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Size: 81077 |
Author: 黄淮海 |
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Description: NGN下SIP穿越技术资料（NGN tunnel by sip）-NGN technical information under the SIP through (NGN tunnel by sip)
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Size: 80896 |
Author: 黄淮海 |
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