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发明名称
Caller discrimination within a telephone system
摘要
申请公布号
EP0822697(B1)
申请公布日期
2005.06.15
申请号
EP19970112919
申请日期
1997.07.26
申请人
SIEMENS COMMUNICATIONS, INC.
发明人
KHALID, ZAFAR M.;BEYDA, WILLIAM J.;THOMAS, JAY
分类号
H04M3/42;H04M3/38;H04M3/428;H04M3/436;(IPC1-7):H04M3/38
主分类号
H04M3/42
代理机构
代理人
主权项
地址
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