JPS54154204A - Identifying system for circuit state change - Google Patents

Identifying system for circuit state change

Info

Publication number
JPS54154204A
JPS54154204A JP6363478A JP6363478A JPS54154204A JP S54154204 A JPS54154204 A JP S54154204A JP 6363478 A JP6363478 A JP 6363478A JP 6363478 A JP6363478 A JP 6363478A JP S54154204 A JPS54154204 A JP S54154204A
Authority
JP
Japan
Prior art keywords
information
circuit
reading information
state change
present
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP6363478A
Other languages
Japanese (ja)
Inventor
Takao Hayashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP6363478A priority Critical patent/JPS54154204A/en
Publication of JPS54154204A publication Critical patent/JPS54154204A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/54—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised
    • H04Q3/545—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised using a stored programme
    • H04Q3/54575—Software application
    • H04Q3/54591—Supervision, e.g. fault localisation, traffic measurements, avoiding errors, failure recovery, monitoring, statistical analysis

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

PURPOSE:To secure transmission of only effective information by identifying the misdetection of the noise before transmission to the central control unit as the signals indicating the state change of the repeating circuit as well as the subscriber circuit which is connected to the automatic telephone exchange. CONSTITUTION:Scanning circuit SCN scans circuits L1-Ln by the indication of control circuit CNT and memorizes the reading information en bloc by the amount equivalent to several circuits into area PL where the present reading information (present look information) of memory circuit MEM. Control circuit CNT compares the present reading information with the preceding reading information (last look information) memorized in area PL. This process is carried out at least once to identify that the reading information is the effective circuit state change information and not the signals caused by the noise or the like. Then this change information is transferred to queue buffer QM along with the circuit number to be registered to the queuing matrix. After this, the change information is read out to central processing unit CPU to carry out the exchange connection process.
JP6363478A 1978-05-26 1978-05-26 Identifying system for circuit state change Pending JPS54154204A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6363478A JPS54154204A (en) 1978-05-26 1978-05-26 Identifying system for circuit state change

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6363478A JPS54154204A (en) 1978-05-26 1978-05-26 Identifying system for circuit state change

Publications (1)

Publication Number Publication Date
JPS54154204A true JPS54154204A (en) 1979-12-05

Family

ID=13234968

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6363478A Pending JPS54154204A (en) 1978-05-26 1978-05-26 Identifying system for circuit state change

Country Status (1)

Country Link
JP (1) JPS54154204A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58170296A (en) * 1982-03-31 1983-10-06 Nec Corp Call number detecting system in car telephone set
JPS58158564U (en) * 1982-04-14 1983-10-22 ソニー株式会社 Synchronous stabilization circuit
JPS62181540A (en) * 1986-02-05 1987-08-08 Nec Corp Synchronous data input circuit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58170296A (en) * 1982-03-31 1983-10-06 Nec Corp Call number detecting system in car telephone set
JPS58158564U (en) * 1982-04-14 1983-10-22 ソニー株式会社 Synchronous stabilization circuit
JPH0241976Y2 (en) * 1982-04-14 1990-11-08
JPS62181540A (en) * 1986-02-05 1987-08-08 Nec Corp Synchronous data input circuit

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