JPS573442A - Absence display system in radio communication system - Google Patents

Absence display system in radio communication system

Info

Publication number
JPS573442A
JPS573442A JP7673280A JP7673280A JPS573442A JP S573442 A JPS573442 A JP S573442A JP 7673280 A JP7673280 A JP 7673280A JP 7673280 A JP7673280 A JP 7673280A JP S573442 A JPS573442 A JP S573442A
Authority
JP
Japan
Prior art keywords
signal
section
base station
callout
transmitted
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
JP7673280A
Other languages
Japanese (ja)
Inventor
Kozo Ito
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 JP7673280A priority Critical patent/JPS573442A/en
Publication of JPS573442A publication Critical patent/JPS573442A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE:To perform the effective use of lines and to cancel uncertainty, by transmitting a signal informing the absence automatically to a callout signal from a mobile station, through setting the information to a device in a base station, when the operator is absent in the base station. CONSTITUTION:Electromagnetic waves modulated with a callout signal transmitted from an antenna 1 of a mobile station device are received at a base station, and the received output inputs to a signal reception section 8 from a connecting terminal 6 of the base station device and is converted into a DC signal after demodulation. Further, this signal is transmitted to an exchange control section 9 and a signal transmission section 10 to make callout for an exclusive telephone set for a fixed time through an exclusive telephone set connecting section 11. On the other hand, when the information of absent operator is transmitted from the section 10 to a transmission control section 13 before the callout and it is applied to a radio set through a transmitter modulation input connection terminal 7 modulated at a modulation section 12. The electromagnetic waves are received at the mobile station to confirm the status of the base station, allowing to perform effective use of lines and elimination of uncertainty.
JP7673280A 1980-06-09 1980-06-09 Absence display system in radio communication system Pending JPS573442A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7673280A JPS573442A (en) 1980-06-09 1980-06-09 Absence display system in radio communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7673280A JPS573442A (en) 1980-06-09 1980-06-09 Absence display system in radio communication system

Publications (1)

Publication Number Publication Date
JPS573442A true JPS573442A (en) 1982-01-08

Family

ID=13613745

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7673280A Pending JPS573442A (en) 1980-06-09 1980-06-09 Absence display system in radio communication system

Country Status (1)

Country Link
JP (1) JPS573442A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5319369A (en) * 1976-08-07 1978-02-22 Matsushita Electric Ind Co Ltd Mold device for making resin article having movable part and the method of making

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5319369A (en) * 1976-08-07 1978-02-22 Matsushita Electric Ind Co Ltd Mold device for making resin article having movable part and the method of making

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