JPS5493912A - Communication system - Google Patents

Communication system

Info

Publication number
JPS5493912A
JPS5493912A JP78078A JP78078A JPS5493912A JP S5493912 A JPS5493912 A JP S5493912A JP 78078 A JP78078 A JP 78078A JP 78078 A JP78078 A JP 78078A JP S5493912 A JPS5493912 A JP S5493912A
Authority
JP
Japan
Prior art keywords
telautograph
signals
partner
aural
communication
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
JP78078A
Other languages
Japanese (ja)
Inventor
Katsumi Nishiguchi
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP78078A priority Critical patent/JPS5493912A/en
Publication of JPS5493912A publication Critical patent/JPS5493912A/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
    • H04M11/062—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors using different frequency bands for speech and other data

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

PURPOSE:To ensure the smooth selection of the transmitters by securing the electric multiplication between the aural signal and the telautograph signal and giving some alteration to the communication system when necessary exactly in one time. CONSTITUTION:The frequency division multiplication is given to the output of telephone set 1 and telautograph 2, and the multiplied output reaches the exchange through subscriber line 4. The intra-office call is connected to partner telephone set 1' as well as to partner telautograph 2[ via line link network 5 and intra-office trunk 6 to perform the communication. In case the partner is a subscriber of other stations, the communication is performed through the repeating circuit. In this case, branching filter 8 and 8' plus frequency converter 9 and 9' are provided between network 5/5' and 7/7' within the exchange to separate the aural signals from the telautograph signals. The telautograph signals are moldulated at frequency converter 9 and then transmitted to the remote station along with the aural signals through repeating circuit 10 and 11. At the remote station, the signals are processed in the contrary procedure to perform the connection between the stations.
JP78078A 1978-01-06 1978-01-06 Communication system Pending JPS5493912A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP78078A JPS5493912A (en) 1978-01-06 1978-01-06 Communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP78078A JPS5493912A (en) 1978-01-06 1978-01-06 Communication system

Publications (1)

Publication Number Publication Date
JPS5493912A true JPS5493912A (en) 1979-07-25

Family

ID=11483203

Family Applications (1)

Application Number Title Priority Date Filing Date
JP78078A Pending JPS5493912A (en) 1978-01-06 1978-01-06 Communication system

Country Status (1)

Country Link
JP (1) JPS5493912A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5684064A (en) * 1979-11-19 1981-07-09 Cselt Centro Studi Lab Telecom Device for exchanging and broadcasting information with subscriber*s telephone channel network

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5684064A (en) * 1979-11-19 1981-07-09 Cselt Centro Studi Lab Telecom Device for exchanging and broadcasting information with subscriber*s telephone channel network
JPH0132696B2 (en) * 1979-11-19 1989-07-10 Kuseruto Chentoro Suteyudei E Lab Terekomyunikatsuiooni Spa

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