JPS5571349A - Self-diagnosis-type public telephone set - Google Patents

Self-diagnosis-type public telephone set

Info

Publication number
JPS5571349A
JPS5571349A JP14578378A JP14578378A JPS5571349A JP S5571349 A JPS5571349 A JP S5571349A JP 14578378 A JP14578378 A JP 14578378A JP 14578378 A JP14578378 A JP 14578378A JP S5571349 A JPS5571349 A JP S5571349A
Authority
JP
Japan
Prior art keywords
rom1
ram1
program
diagnosis
telephone set
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.)
Granted
Application number
JP14578378A
Other languages
Japanese (ja)
Other versions
JPS6342462B2 (en
Inventor
Toshiji Kinoshita
Hitoshi Hayamizu
Shuji Kunii
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.)
Tamura Electric Works Ltd
Original Assignee
Tamura Electric Works 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 Tamura Electric Works Ltd filed Critical Tamura Electric Works Ltd
Priority to JP14578378A priority Critical patent/JPS5571349A/en
Publication of JPS5571349A publication Critical patent/JPS5571349A/en
Publication of JPS6342462B2 publication Critical patent/JPS6342462B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M17/00—Prepayment of wireline communication systems, wireless communication systems or telephone systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Prepayment Telephone Systems (AREA)

Abstract

PURPOSE:To perform self-diagnosis automatically by storing a program, which detects faults of check positions determined previously, in a storage unit and operating the control part, which detect automatically faults according to the program, by off-hook of a telephone set. CONSTITUTION:Storage unit ROM1 connected to CPU1 and auxiliary storage unit RAM1 are connected to control circuit MCC of a public telephone set, and ROM1 and RAM1 are connected to I/O circuit I/O1. A program to detect faults of check positions determined previously is stored in ROM1, and various information required for operations of control circuit MCC are stored in RAM1 successively. Then, each time off-hook signal SH from hook switch H is given to CPU1 through circuit I/O1, the program which is stored in ROM1 and detects faults of check positions is read out according to contents of RAM1 by CPU1, thus performing self-diagnosis of each part connected to circuit I/O1.
JP14578378A 1978-11-25 1978-11-25 Self-diagnosis-type public telephone set Granted JPS5571349A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14578378A JPS5571349A (en) 1978-11-25 1978-11-25 Self-diagnosis-type public telephone set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14578378A JPS5571349A (en) 1978-11-25 1978-11-25 Self-diagnosis-type public telephone set

Publications (2)

Publication Number Publication Date
JPS5571349A true JPS5571349A (en) 1980-05-29
JPS6342462B2 JPS6342462B2 (en) 1988-08-23

Family

ID=15393051

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14578378A Granted JPS5571349A (en) 1978-11-25 1978-11-25 Self-diagnosis-type public telephone set

Country Status (1)

Country Link
JP (1) JPS5571349A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5192106A (en) * 1975-02-12 1976-08-12

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5192106A (en) * 1975-02-12 1976-08-12

Also Published As

Publication number Publication date
JPS6342462B2 (en) 1988-08-23

Similar Documents

Publication Publication Date Title
JPS5571349A (en) Self-diagnosis-type public telephone set
JPS54117883A (en) Numerical control device
JPS5571348A (en) Self-diagnosis system of public telephone set
JPS5574260A (en) Public telephone of self-diagnosis type
JPS5574261A (en) Public telephone of automatic operation test type
JPS577690A (en) Initial program loading system
JPS5574258A (en) Public telephone of self-diagnosis type
JPS56110171A (en) System for designation by responsible person
JPS5384540A (en) Data processing unit
JPS5574259A (en) Public telephone of failure display type
JPS54124907A (en) Terminating trunk connection system
JPS5545110A (en) Error detection system
JPS5533286A (en) Data processor
JPS5760445A (en) Processing system of micro-instruction
JPS57199055A (en) Information processing device
JPS54131841A (en) Code conversion system
JPS53110342A (en) Fault automatic recording device
JPS5621258A (en) Failure storage system in central processing unit
JPS5652433A (en) Tabulation system
JPS54102937A (en) Information processor
JPS5764831A (en) Time device
JPS5440535A (en) Interface circuit for microcomputer
JPS5578357A (en) Program overrun detection unit
JPS5461834A (en) Multiple-item input device
JPS55163932A (en) Data switching system