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发明名称
INTERNET PROTOCOL TELEPHONY USING LEGACY SWITCHING SYSTEMS
摘要
申请公布号
EP1330913(A2)
申请公布日期
2003.07.30
申请号
EP20010978623
申请日期
2001.10.29
申请人
SIEMENS PLC
发明人
ELWELL, JOHN, ROBERT;MCNEILLIE, DUNCAN
分类号
H04L12/64;H04L29/06;H04M7/00;H04M7/06;(IPC1-7):H04M7/00;H04Q3/00
主分类号
H04L12/64
代理机构
代理人
主权项
地址
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