JPS54116802A - Privacy communication system - Google Patents

Privacy communication system

Info

Publication number
JPS54116802A
JPS54116802A JP2418678A JP2418678A JPS54116802A JP S54116802 A JPS54116802 A JP S54116802A JP 2418678 A JP2418678 A JP 2418678A JP 2418678 A JP2418678 A JP 2418678A JP S54116802 A JPS54116802 A JP S54116802A
Authority
JP
Japan
Prior art keywords
terminal
data
repeater
switching network
sent
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
JP2418678A
Other languages
Japanese (ja)
Inventor
Hideo Tanaka
Toyokazu Ishizaki
Takashi Suzuki
Setsuo Murase
Sumio 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.)
Fujitsu Ltd
NEC Corp
NTT Inc
Original Assignee
Fujitsu Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Nippon Electric 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 Fujitsu Ltd, NEC Corp, Nippon Telegraph and Telephone Corp, Nippon Electric Co Ltd filed Critical Fujitsu Ltd
Priority to JP2418678A priority Critical patent/JPS54116802A/en
Publication of JPS54116802A publication Critical patent/JPS54116802A/en
Pending legal-status Critical Current

Links

Landscapes

  • Facsimile Transmission Control (AREA)

Abstract

PURPOSE: To enable a specific receiver only to receive data definitely without controlling the connection of a switching network when transmitting secret data from a data transmitting terminal to a receiving terminal via a repeater of the switching network.
CONSTITUTION: In data switching network NW equipped with data transmitting terminal T, data receiving terminal R and repeater P, off-hook signal (a) is switched to dial tone (b) between terminal T and switching network NW before privacy communication pass work PW and receiving terminal number ID are sent to repeater P from terminal T and then, data information DATA is sent and stored in repeater P after terminal T receives OK signal (g). Next, terminal R is connected to repeater P via switching network NW and pass word P from terminal R is collated with terminal number ID by repeater P, so that only when the both agree each other, data information DATA stored in repeated P will be sent out to terminal R.
COPYRIGHT: (C)1979,JPO&Japio
JP2418678A 1978-03-03 1978-03-03 Privacy communication system Pending JPS54116802A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2418678A JPS54116802A (en) 1978-03-03 1978-03-03 Privacy communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2418678A JPS54116802A (en) 1978-03-03 1978-03-03 Privacy communication system

Publications (1)

Publication Number Publication Date
JPS54116802A true JPS54116802A (en) 1979-09-11

Family

ID=12131291

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2418678A Pending JPS54116802A (en) 1978-03-03 1978-03-03 Privacy communication system

Country Status (1)

Country Link
JP (1) JPS54116802A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6113870A (en) * 1984-06-29 1986-01-22 Ricoh Co Ltd Polling transmission system
JPS61222379A (en) * 1985-03-05 1986-10-02 Fujitsu Ltd Facsimile communication system
JPS6275679U (en) * 1986-10-16 1987-05-14
JPS63257372A (en) * 1987-04-15 1988-10-25 Hitachi Ltd Fax response system
JP2014192871A (en) * 2013-03-28 2014-10-06 Nippon Telegraph & Telephone East Corp Data transmission system, data transmission method, and data transmission program

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6113870A (en) * 1984-06-29 1986-01-22 Ricoh Co Ltd Polling transmission system
JPS61222379A (en) * 1985-03-05 1986-10-02 Fujitsu Ltd Facsimile communication system
JPS6275679U (en) * 1986-10-16 1987-05-14
JPS63257372A (en) * 1987-04-15 1988-10-25 Hitachi Ltd Fax response system
JP2014192871A (en) * 2013-03-28 2014-10-06 Nippon Telegraph & Telephone East Corp Data transmission system, data transmission method, and data transmission program

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