FAILURE INFORMATION TRANSFER SYSTEM

PURPOSE:To eliminate the need for jobs such as main class reading, listening to sub-class and interpretation to the content of failure, at a maintenance in charge station, by using the combination between a DC voltage polarity and a multi-frequency signal, and transferring failure information. CONST...

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Bibliographic Details
Main Authors INOUE KOUJI, MISHIMA TOMOYASU, TOKUI YOSHIMASA, NISHIMURA TAKASHI, TSUTSUMI KAZUO
Format Patent
LanguageEnglish
Published 02.07.1983
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRIC DIGITAL DATA PROCESSING
ELECTRICITY
PHYSICS
TELEPHONIC COMMUNICATION
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Summary:PURPOSE:To eliminate the need for jobs such as main class reading, listening to sub-class and interpretation to the content of failure, at a maintenance in charge station, by using the combination between a DC voltage polarity and a multi-frequency signal, and transferring failure information. CONSTITUTION:When a failure takes place in an exchange, the main class and the sub-class corresponding to the accommodated terminal number of a failure display are selected at a code conversion circuit 1. The main class is transmitted to an A, B line voltage control circuit 2, and a voltage to be applied to a relay line is selected and transmitted out of BB, B snd G. The sub-class is transmitted from a PB oscillation circuit 3 and one figure out of four figures assigned as the sub-class of the PB signal is transmitted to the relay line via a coupling transformer T. The DC signal and the PB signal transmitted from an unattended station are received at a maintenance in charge station and translated at the processor, allowing to read the content of failure automatically.
Bibliography:Application Number: JP19810209428