发明名称 |
Signalling system and signal control equipment for multi-address calling |
摘要 |
A signalling system for multi-address calling and a signal control equipment therefor in which a control signal starts with a synchronize signal, followed by a function determination field indicating that the control signal is any one of a selection signal, a call accepting state indication signal and a data receiving state indication signal, the function determination field being followed by a terminal appointing field in which the signal, set in the function determination field is provided bit by bit in a predetermined order for each destination terminal. Circuit arrangements for transmitting and receiving such a control signal are provided as signal control equipments both on the side of an originating terminal and on the side of an exchange.
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申请公布号 |
US4379946(A) |
申请公布日期 |
1983.04.12 |
申请号 |
US19810265484 |
申请日期 |
1981.05.20 |
申请人 |
NIPPON TELEGRAPH & TELEPHONE PUBLIC CORPORATION |
发明人 |
MIZUNO, TOSHIRO;IMAI, KAZUO |
分类号 |
H04L12/18;(IPC1-7):H04L11/15 |
主分类号 |
H04L12/18 |
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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