发明名称 Call restriction arrangement
摘要 A PBX call restriction arrangement is disclosed in which a plurality of call rerouting schemes are concurrently provided. The class of service assigned each station is used to define both the types of calls prohibited to the station and the rerouting treatment to be given an attempt by a subscriber at this station to make this prohibited type of call.
申请公布号 US4096356(A) 申请公布日期 1978.06.20
申请号 US19770819111 申请日期 1977.07.26
申请人 BELL TELEPHONE LABORATORIES, INCORPORATED 发明人 BURTNESS, RICHARD DUANE;THELEMAQUE, LOUIS EMANUEL
分类号 H04M3/38;H04M3/54;(IPC1-7):H04M1/66 主分类号 H04M3/38
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