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发明名称
METHOD OF AND SYSTEM FOR EXTENDING INTERNET TELEPHONY OVER VIRTUAL PRIVATE NETWORK DIRECT ACCESS LINES
摘要
申请公布号
EP1198925(A2)
申请公布日期
2002.04.24
申请号
EP20000948982
申请日期
2000.07.28
申请人
MCI WORLDCOM, INC.
发明人
DONOVAN, STEVEN, R.;CANNON, MATTHEW, J.
分类号
H04M3/42;H04L12/46;H04L29/06;H04L29/12;H04M3/00;H04M7/00;H04M7/12;H04Q3/00;(IPC1-7):H04L12/28;H04L12/56;H04L12/66;H04M11/00
主分类号
H04M3/42
代理机构
代理人
主权项
地址
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