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    • 6. 发明专利
    • FAULT DIAGNOSTIC SYSTEM
    • JPS62104254A
    • 1987-05-14
    • JP24268785
    • 1985-10-31
    • NIPPON TELEGRAPH & TELEPHONE
    • SHIMAZAKI HITOSHIAKIYAMA NOBUYOSHIKOGURE KOJI
    • H04M3/26H04Q1/24
    • PURPOSE:To reduce a fault diagnostic time by selecting one of plural operating sections at fault occurrence, changing it into a block section, switching an incoming line of the block section from an outgoing line of the operating system into a corresponding outgoing line of a spare system by means of a selector to apply fault diagnosis of the block section sequentially thereby applying the same fault diagnostic method as a duplicated equipment to a simplex equipment. CONSTITUTION:If a fault takes place in the simplex equipment 3, a controller 4 changes the operating section 3-4 of the simplex equipment as the block section and disconnects the operating section from the operating system 1-1 and connect it to the spare system 1-2, the spare system 1-2 and the simplex equipment block section 3-4 receive a control order to constitute the test bus in a route of pattern generator 5-1 terminal 7-2 spare system 1-2 terminal 8-24 selector 2-4 terminal 9-4 block section 3-4 terminal 10-4 pattern checker 5-2. As the result of test, when no fault exists in the simplex equipment operation section 3-4, other operation sections 3-3-3-1 of the simplex equipment are diagnosed sequentially by the same method.
    • 10. 发明专利
    • LINE CONTINUITY CONFIRMATION TEST SYSTEM
    • JPH03240351A
    • 1991-10-25
    • JP3774390
    • 1990-02-19
    • NIPPON TELEGRAPH & TELEPHONE
    • NONAKA AKIRAYAJIMA TOSHIOKOGURE KOJIYAMAGUCHI TOMOHARU
    • H04M3/32
    • PURPOSE:To easily apply test control and to confirm the continuity plural lines simultaneously by separating a signal for monitor test from a signal from an outgoing exchange in an incoming exchange and comparing the signal with a line accommodation location number and a called exchange number. CONSTITUTION:A line information insertion section 35 of a caller exchange inserts destination information or an absolute line number sent from a line information edit section 34 to an additional signal part of a lien to which the information is to be inserted and sends the integrated information with main information to a coupler 2. On the other hand, a line information separation section 36 of a called exchange 1-b separates only destination information or the absolute line number in the additional signal in the information sent from the coupler 2 and gives the separated information to a line information collation section 37. The line information collation section 37 compares the absolute line number sent from the separate section 36 with a data of a line information management section 33 in its own exchange to confirm the continuity of the line.