发明名称 Method and apparatus for sending alerts to internet protocol phones
摘要 The present invention enables an alert message and the display of calling party identity on all on-hook phones associated with an extension sharing the same phone number, when one phone is off-hook and in use. In one exemplary embodiment, this capability enables all other members of a household to receive information regarding an incoming call even when one phone is in use by another member.
申请公布号 US7664252(B1) 申请公布日期 2010.02.16
申请号 US20040025400 申请日期 2004.12.29
申请人 AT&T CORP. 发明人 CROAK MARIAN;ESLAMBOLCHI HOSSEIN
分类号 H04M3/00 主分类号 H04M3/00
代理机构 代理人
主权项
地址