JPS5686541A - Busy-tone transmission system for radio relay station - Google Patents

Busy-tone transmission system for radio relay station

Info

Publication number
JPS5686541A
JPS5686541A JP16361579A JP16361579A JPS5686541A JP S5686541 A JPS5686541 A JP S5686541A JP 16361579 A JP16361579 A JP 16361579A JP 16361579 A JP16361579 A JP 16361579A JP S5686541 A JPS5686541 A JP S5686541A
Authority
JP
Japan
Prior art keywords
busy
relay
given
slave stations
relay station
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
JP16361579A
Other languages
Japanese (ja)
Other versions
JPS631784B2 (en
Inventor
Masahiko 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.)
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 JP16361579A priority Critical patent/JPS5686541A/en
Publication of JPS5686541A publication Critical patent/JPS5686541A/en
Publication of JPS631784B2 publication Critical patent/JPS631784B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile

Landscapes

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

Abstract

PURPOSE:To make distinction whether electromagnetic waves are not reached to the relay station or the relay lins are busy, by informing the busy state to slave stations through the operation of an oscillator for a given time, when incoming call is given to the radio equipment at a slave station of nondesignation side. CONSTITUTION:When the modulation input switching relay 5 and its contacts 5a, 5b for the first and the second systems are designated to the first system, if an incoming call is given to the receiver 3R of the No.2 radio equipment 3 for the slave stations, the No.2 squeltch relay is operated, the contact 9 is close, and the busy tone oscillator 8 for the second system transmits a signal for a given time. This signal is fed to the transmitter 3S of the second radio euqipment 3 via the contact 5b of the modulation input switching relay 5 and transmitted to slave stations.
JP16361579A 1979-12-18 1979-12-18 Busy-tone transmission system for radio relay station Granted JPS5686541A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16361579A JPS5686541A (en) 1979-12-18 1979-12-18 Busy-tone transmission system for radio relay station

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16361579A JPS5686541A (en) 1979-12-18 1979-12-18 Busy-tone transmission system for radio relay station

Publications (2)

Publication Number Publication Date
JPS5686541A true JPS5686541A (en) 1981-07-14
JPS631784B2 JPS631784B2 (en) 1988-01-14

Family

ID=15777285

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16361579A Granted JPS5686541A (en) 1979-12-18 1979-12-18 Busy-tone transmission system for radio relay station

Country Status (1)

Country Link
JP (1) JPS5686541A (en)

Also Published As

Publication number Publication date
JPS631784B2 (en) 1988-01-14

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