JPS522310A - Three-person communicaton circuit - Google Patents

Three-person communicaton circuit

Info

Publication number
JPS522310A
JPS522310A JP7872175A JP7872175A JPS522310A JP S522310 A JPS522310 A JP S522310A JP 7872175 A JP7872175 A JP 7872175A JP 7872175 A JP7872175 A JP 7872175A JP S522310 A JPS522310 A JP S522310A
Authority
JP
Japan
Prior art keywords
person
circuit
communicaton
communicaton circuit
exchange
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
JP7872175A
Other languages
Japanese (ja)
Inventor
Shoichi Abe
Ichiro Sakakibara
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.)
NEC Corp
Nippon Telegraph and Telephone Corp
Original Assignee
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 NEC Corp, Nippon Telegraph and Telephone Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP7872175A priority Critical patent/JPS522310A/en
Publication of JPS522310A publication Critical patent/JPS522310A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)

Abstract

PURPOSE:To provide a system of improving electrical characteristics by inserting a relay ring into a circuit in an exchange three-person communication circuit employing resistance hybrid circuits.
JP7872175A 1975-06-24 1975-06-24 Three-person communicaton circuit Pending JPS522310A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7872175A JPS522310A (en) 1975-06-24 1975-06-24 Three-person communicaton circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7872175A JPS522310A (en) 1975-06-24 1975-06-24 Three-person communicaton circuit

Publications (1)

Publication Number Publication Date
JPS522310A true JPS522310A (en) 1977-01-10

Family

ID=13669732

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7872175A Pending JPS522310A (en) 1975-06-24 1975-06-24 Three-person communicaton circuit

Country Status (1)

Country Link
JP (1) JPS522310A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS584085U (en) * 1981-07-02 1983-01-11 ダイキン工業株式会社 Comfort level detection device
JPS58156272U (en) * 1982-04-14 1983-10-19 株式会社芝浦電子製作所 thermistor sensor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS494764A (en) * 1972-04-27 1974-01-16

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS494764A (en) * 1972-04-27 1974-01-16

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS584085U (en) * 1981-07-02 1983-01-11 ダイキン工業株式会社 Comfort level detection device
JPS58156272U (en) * 1982-04-14 1983-10-19 株式会社芝浦電子製作所 thermistor sensor
JPH0112211Y2 (en) * 1982-04-14 1989-04-10

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