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保存失败
公开(公告)号:EP0641112B1
公开(公告)日:2002-01-02
申请号:EP94111267.4
申请日:1994-07-20
申请人: US West, Inc. , MediaOne Group, Inc.
发明人: Marks, Martin Ray , Crum, Michael Stephen , Moore, Peggy Eileen
IPC分类号: H04M3/50 , H04M3/46 , H04M3/54 , H04Q3/64 , H04M3/523 , H04M3/533
CPC分类号: H04M3/533 , H04M3/46 , H04M3/523 , H04M3/54 , H04Q3/64