JPS5612138A - Press-to-talk calling system of radio telephone - Google Patents

Press-to-talk calling system of radio telephone

Info

Publication number
JPS5612138A
JPS5612138A JP8690679A JP8690679A JPS5612138A JP S5612138 A JPS5612138 A JP S5612138A JP 8690679 A JP8690679 A JP 8690679A JP 8690679 A JP8690679 A JP 8690679A JP S5612138 A JPS5612138 A JP S5612138A
Authority
JP
Japan
Prior art keywords
station
signal
calling
tone
called
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
JP8690679A
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 JP8690679A priority Critical patent/JPS5612138A/en
Publication of JPS5612138A publication Critical patent/JPS5612138A/en
Pending 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)
  • Transceivers (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE:To make it smooth to make a call by sending a changeover tone signal to a party side when either of subscriber changes transmission over to reception in the simplex working system. CONSTITUTION:After the key station sends lock signal 2 to the subordinate station and dial tone 3 to the calling station with calling signal 1 of the calling station and the calling station sends dial signal 4 out. The key station sends simplex signal 5 out to call the called station with speech signal 6 and also to send dial tone 8 to the calling station. Once the called station answers, answer signal 9 is received by the key station and with transmitted signal 10 of the calling station, the circuit for the received signal 11 of the called station is constituted. When the calling station changes transmission over to reception, the calling station sends changeover tone signal 12 to the called station for 0.5 second and the called station generates transmission tone signal 14 by the signal for the call.
JP8690679A 1979-07-11 1979-07-11 Press-to-talk calling system of radio telephone Pending JPS5612138A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8690679A JPS5612138A (en) 1979-07-11 1979-07-11 Press-to-talk calling system of radio telephone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8690679A JPS5612138A (en) 1979-07-11 1979-07-11 Press-to-talk calling system of radio telephone

Publications (1)

Publication Number Publication Date
JPS5612138A true JPS5612138A (en) 1981-02-06

Family

ID=13899875

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8690679A Pending JPS5612138A (en) 1979-07-11 1979-07-11 Press-to-talk calling system of radio telephone

Country Status (1)

Country Link
JP (1) JPS5612138A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6174421A (en) * 1984-09-20 1986-04-16 Funai Denki Kk Talking method with wireless interphone
JP2008072195A (en) * 2006-09-12 2008-03-27 Casio Hitachi Mobile Communications Co Ltd Call management device, system and program

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6174421A (en) * 1984-09-20 1986-04-16 Funai Denki Kk Talking method with wireless interphone
JP2008072195A (en) * 2006-09-12 2008-03-27 Casio Hitachi Mobile Communications Co Ltd Call management device, system and program

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