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发明名称
Method and device for establishing a conference circuit
摘要
申请公布号
EP1282296(A3)
申请公布日期
2005.04.20
申请号
EP20020015873
申请日期
2002.07.16
申请人
SIEMENS AKTIENGESELLSCHAFT
发明人
BURGER, MANFRED;HOHL, HUBERTUS, DR.;LEDERER, THOMAS
分类号
H04M3/42;H04M3/424;H04M3/56;(IPC1-7):H04M3/56
主分类号
H04M3/42
代理机构
代理人
主权项
地址
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