JPS5614762A - Automatic circuit disconnection system of data transmission - Google Patents

Automatic circuit disconnection system of data transmission

Info

Publication number
JPS5614762A
JPS5614762A JP9055079A JP9055079A JPS5614762A JP S5614762 A JPS5614762 A JP S5614762A JP 9055079 A JP9055079 A JP 9055079A JP 9055079 A JP9055079 A JP 9055079A JP S5614762 A JPS5614762 A JP S5614762A
Authority
JP
Japan
Prior art keywords
circuit
control part
transmission
uncontrollable
signal
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
JP9055079A
Other languages
Japanese (ja)
Inventor
Harumitsu Yoshioka
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP9055079A priority Critical patent/JPS5614762A/en
Publication of JPS5614762A publication Critical patent/JPS5614762A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Facsimile Transmission Control (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)

Abstract

PURPOSE:To prevent the payment of fruitless circuit rent by avoiding a permanent connection of a circuit by detecting the transmission control part of a local office getting beyond control after the circuit connection and then automatically disconnecting the circuit. CONSTITUTION:The data transmitter is provided with input-output part I/O and transmission control part 10, to which telephone circuit L is connected via modem 2 and network controller 1. In this transmitter, uncontrollable transmission detection part 11 is provided which detects control part 10 getting uncontrollable, and this detection part 11 is connected between fetch point A of a selective signal line and the output side of control part 10. Then, a transmission control signal appearing at fetch point A repetitively is fetched to make sure of normal operation. Then when the signal does not appear in a predetermined maximum period, uncontrollable transmission is detected to disconnect the circuit automatically by supplying circuit disconnection command signal B to modem 2, so that the payment of fruitless circuit rent can be prevented by avoiding a permanent connection of the circuit.
JP9055079A 1979-07-17 1979-07-17 Automatic circuit disconnection system of data transmission Pending JPS5614762A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9055079A JPS5614762A (en) 1979-07-17 1979-07-17 Automatic circuit disconnection system of data transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9055079A JPS5614762A (en) 1979-07-17 1979-07-17 Automatic circuit disconnection system of data transmission

Publications (1)

Publication Number Publication Date
JPS5614762A true JPS5614762A (en) 1981-02-13

Family

ID=14001512

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9055079A Pending JPS5614762A (en) 1979-07-17 1979-07-17 Automatic circuit disconnection system of data transmission

Country Status (1)

Country Link
JP (1) JPS5614762A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5842361A (en) * 1981-09-07 1983-03-11 Ricoh Co Ltd Facsimile communication method
JPS5856191U (en) * 1981-10-13 1983-04-16 株式会社東芝 Fan
JPS58106942A (en) * 1981-12-19 1983-06-25 Fujitsu Ltd Processing system for abnormality of cpu of terminal having automatic terminating function

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5842361A (en) * 1981-09-07 1983-03-11 Ricoh Co Ltd Facsimile communication method
JPS5856191U (en) * 1981-10-13 1983-04-16 株式会社東芝 Fan
JPS58106942A (en) * 1981-12-19 1983-06-25 Fujitsu Ltd Processing system for abnormality of cpu of terminal having automatic terminating function

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