发明名称 Communication system
摘要 There is disclosed a communication system, such as a telephone exchange with an automatic dialling function, in which the telephone number of the destination called by automatic dialling is made known to the calling terminal or telephone, so that the user can confirm the destination in advance before the communication is made.
申请公布号 US4926471(A) 申请公布日期 1990.05.15
申请号 US19890311362 申请日期 1989.02.16
申请人 CANON KABUSHIKI KAISHA 发明人 IKEDA, TOSHIO
分类号 H04M1/56;H04M3/44;H04M3/487 主分类号 H04M1/56
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