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1. 发明专利

JPS5463856A REMOTE MONITOR 失效
公开(公告)号：JPS5463856A
公开(公告)日：1979-05-23
申请号：JP13106277
申请日：1977-10-31
申请人： NIPPON ELECTRIC CO
发明人： SUZUKI TOSHINOBU , ROKUGOU YOSHINORI
IPC分类号： H04L1/22 , G01D5/12 , G08C15/00 , G08C25/00 , H04B1/60 , H04B1/74 , H04B3/46
摘要： PURPOSE:To dispense with a special warn transmission wiring by providing an intermediate station between attended and unattended terminal station with means for transmitting pulses of trouble information and means for detecting the restoration indicating signals and the attended terminal station with means for detecting the information and means for transmitting the restoration indicating pulses. CONSTITUTION:An unattended intermediate station B of automatic circuit change- over type is equipped with: a special pulse pattern generator 112 for transferring to an attended terminal station C with the use of a preparatory circuit the information that the next transmission passage (e.g., the circuit between stations A and B) is being troubled or interchanged; and restoration control means 16 and 14B for detecting the special pulse pattern for restoration control, which is generated from the attended terminal station C through the preparatory circuit, so as to effect restoration from the preparatory circuit of the next passage to the circuit being used. The attended terminal station C is equipped with: a pulse generator 122 for generating pulse pattern; a control circuit 14C for feeding special pulse pattern to the preparatory circuit; and a detector 15 for detecting the special pattern pulses which are indicative of the troubles fed through the preparatory circuit.

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