JPS5725743A - Maintenance system of radio telephone system - Google Patents

Maintenance system of radio telephone system

Info

Publication number
JPS5725743A
JPS5725743A JP10041480A JP10041480A JPS5725743A JP S5725743 A JPS5725743 A JP S5725743A JP 10041480 A JP10041480 A JP 10041480A JP 10041480 A JP10041480 A JP 10041480A JP S5725743 A JPS5725743 A JP S5725743A
Authority
JP
Japan
Prior art keywords
circuit
telephone
alarm
master station
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
JP10041480A
Other languages
Japanese (ja)
Inventor
Kuniaki Matsuda
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.)
Hitachi Denshi KK
Original Assignee
Hitachi Denshi KK
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 Hitachi Denshi KK filed Critical Hitachi Denshi KK
Priority to JP10041480A priority Critical patent/JPS5725743A/en
Publication of JPS5725743A publication Critical patent/JPS5725743A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H04B17/23—Indication means, e.g. displays, alarms, audible means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

PURPOSE:To ensure the immediate reception of the alarm information at the side of a master station, by tansmitting the call signal to the master station from a terminal station when the alarm information on the reduction of electric power, the reduction of limiter current, etc. is detected. CONSTITUTION:The aural input sent from a telephone is turned into a modulated input c of a radio machine 1 by a buffer amplifier 7 including a switching circuit and through an interface circuit 6 of the telephone, a switching circuit 4 and a hybrid transformer circuit 3 and then transmitted to a master station from the machine 1 after a modulation In case a fault of reduction of electric power of limiter current occurs from the machine 1, a fault signal d showing this faulty phenomenon is detected through an alarm detecting circuit 9. Then a pseudo call signal j is delivered immediately from a control circuit 10 when an alarm signal e, i.e., the output of the circuit 9 is produced at a terminal station. The alarm in formation is added to the signal j to be supplied to the circuit 6 of the telephone and then transmitted to a master station through the same route as the aural input of the telephone.
JP10041480A 1980-07-22 1980-07-22 Maintenance system of radio telephone system Pending JPS5725743A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10041480A JPS5725743A (en) 1980-07-22 1980-07-22 Maintenance system of radio telephone system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10041480A JPS5725743A (en) 1980-07-22 1980-07-22 Maintenance system of radio telephone system

Publications (1)

Publication Number Publication Date
JPS5725743A true JPS5725743A (en) 1982-02-10

Family

ID=14273315

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10041480A Pending JPS5725743A (en) 1980-07-22 1980-07-22 Maintenance system of radio telephone system

Country Status (1)

Country Link
JP (1) JPS5725743A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6477348A (en) * 1987-09-18 1989-03-23 Fujitsu Ltd Alarm transfer system for digital radio system
JPS6489724A (en) * 1987-09-30 1989-04-04 Nippon Telegraph & Telephone Trouble detecting system for radio telephone system
JPH01205634A (en) * 1988-02-12 1989-08-18 Nec Corp Fault detection system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6477348A (en) * 1987-09-18 1989-03-23 Fujitsu Ltd Alarm transfer system for digital radio system
JPS6489724A (en) * 1987-09-30 1989-04-04 Nippon Telegraph & Telephone Trouble detecting system for radio telephone system
JPH01205634A (en) * 1988-02-12 1989-08-18 Nec Corp Fault detection system

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