发明名称 Reverse direction calling system
摘要 Apparatus and methods are provided to connect a call between two parties located at different time zones having different calling costs. The calling costs, which relate to tariffed calling rates, are compared to determine which location has the more economical cost of placing the call. The call is then originated from the location having the lower cost.
申请公布号 US5027387(A) 申请公布日期 1991.06.25
申请号 US19900484370 申请日期 1990.02.26
申请人 MOLL, EDWARD W. 发明人 MOLL, EDWARD W.
分类号 H04M3/48;H04M15/00;H04M15/22;H04Q3/62 主分类号 H04M3/48
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