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.
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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 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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