发明名称 Key telephone system
摘要 A key telephone system with a re-dialing feature has a memory with two memory areas. One of the two memory areas is provided for an outside-line call, and the other is provided for an internal-line call to a particular extension. Each memory area memorizes a dialed number therein and replaces a number of the last intended call, previously present in the memory area, with the most recently dialed number. A re-dialing push-button automatically retrieves the number of a last intended outside-line call, memorized in the outside-line memory area, when actuated following a selection of an outside-line call, or the number of a last intended inside-line call to a particular extension, memorized in the extension memory area, when actuated following a selection of an internal-line call to a particular extension.
申请公布号 US5151933(A) 申请公布日期 1992.09.29
申请号 US19910744503 申请日期 1991.08.14
申请人 NITSUKO CORPORATION 发明人 ABE, KAZUYUKI
分类号 H04M1/27;H04M1/272;H04M9/00 主分类号 H04M1/27
代理机构 代理人
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