JPS5441002A - Data signal control system - Google Patents

Data signal control system

Info

Publication number
JPS5441002A
JPS5441002A JP10752777A JP10752777A JPS5441002A JP S5441002 A JPS5441002 A JP S5441002A JP 10752777 A JP10752777 A JP 10752777A JP 10752777 A JP10752777 A JP 10752777A JP S5441002 A JPS5441002 A JP S5441002A
Authority
JP
Japan
Prior art keywords
control system
data signal
signal control
providing
data signals
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
JP10752777A
Other languages
Japanese (ja)
Inventor
Tadahiko Sasaki
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.)
Iwatsu Electric Co Ltd
Original Assignee
Iwatsu 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 Iwatsu Electric Co Ltd filed Critical Iwatsu Electric Co Ltd
Priority to JP10752777A priority Critical patent/JPS5441002A/en
Publication of JPS5441002A publication Critical patent/JPS5441002A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H04M11/066—Telephone sets adapted for data transmision

Abstract

PURPOSE:To prevent erroneous connection to transmit normal data signals always by providing a line state signal detector circuit in the communication equipment.
JP10752777A 1977-09-07 1977-09-07 Data signal control system Pending JPS5441002A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10752777A JPS5441002A (en) 1977-09-07 1977-09-07 Data signal control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10752777A JPS5441002A (en) 1977-09-07 1977-09-07 Data signal control system

Publications (1)

Publication Number Publication Date
JPS5441002A true JPS5441002A (en) 1979-03-31

Family

ID=14461441

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10752777A Pending JPS5441002A (en) 1977-09-07 1977-09-07 Data signal control system

Country Status (1)

Country Link
JP (1) JPS5441002A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59160365A (en) * 1983-03-03 1984-09-11 Nec Corp Automatic answer detector
JPS60172856A (en) * 1984-01-28 1985-09-06 Nippon Telegr & Teleph Corp <Ntt> Network control system in decentralized controlled type local network
JPS60257650A (en) * 1984-05-23 1985-12-19 バロース・コーポレーシヨン Energy detecting circuit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59160365A (en) * 1983-03-03 1984-09-11 Nec Corp Automatic answer detector
JPS60172856A (en) * 1984-01-28 1985-09-06 Nippon Telegr & Teleph Corp <Ntt> Network control system in decentralized controlled type local network
JPH0457147B2 (en) * 1984-01-28 1992-09-10 Nippon Denshin Denwa Kk
JPS60257650A (en) * 1984-05-23 1985-12-19 バロース・コーポレーシヨン Energy detecting circuit
JPH0431459B2 (en) * 1984-05-23 1992-05-26

Similar Documents

Publication Publication Date Title
JPS5441002A (en) Data signal control system
JPS53111255A (en) Check system for interface control signal
JPS5310912A (en) Two-way multiplex transmission control system
JPS542612A (en) Fault-protective circuit of signal transmitter
JPS5386130A (en) Transmitting/receiving circuit of response confirmation type
JPS51126492A (en) Information transmitting method
JPS5431202A (en) Serial data transfer circuit
JPS53131706A (en) Automatic telephone exchange system
JPS545544A (en) Control system for power line carrier in indoor load
JPS53111227A (en) Communication device for multiple access
JPS52123118A (en) Digital communication unit completed into duplicated reducdant circuit
JPS53123602A (en) Data transmission unit
JPS52130225A (en) Signal transmission unit
JPS5423438A (en) Terminal connection system
JPS5289344A (en) Data collecting and transmitting system
JPS5313818A (en) Signal transmission system
JPS5344788A (en) Transmitter/receiver
JPS5412430A (en) Object detection control system
JPS5365007A (en) Transmission system for intermittent signal
JPS53133306A (en) Automatic data transmission control system
JPS533115A (en) Pcm terminal station unit
JPS5440021A (en) Multi-port system
JPS54918A (en) Facsimile transmission system
JPS51112240A (en) Input output unit control system
JPS5390708A (en) Transmitting system for synchronous signal