JPS57193161A - Optical telephone set - Google Patents

Optical telephone set

Info

Publication number
JPS57193161A
JPS57193161A JP56077644A JP7764481A JPS57193161A JP S57193161 A JPS57193161 A JP S57193161A JP 56077644 A JP56077644 A JP 56077644A JP 7764481 A JP7764481 A JP 7764481A JP S57193161 A JPS57193161 A JP S57193161A
Authority
JP
Japan
Prior art keywords
optical
signal
telephone set
reception
opd
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
JP56077644A
Other languages
Japanese (ja)
Inventor
Haruyuki Yoshino
Kenzo Hasegawa
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
Original Assignee
Fujitsu 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 filed Critical Fujitsu Ltd
Priority to JP56077644A priority Critical patent/JPS57193161A/en
Publication of JPS57193161A publication Critical patent/JPS57193161A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/003—Telephone sets using electrooptical means in the transmission path

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To realize an economical optical telephone set, by connecting an optical telephone set to an exchanger with one optical fiber cable and using the telephone set in time division for transmission and reception in synchronizing with an optical signal transmitted from the exchanger. CONSTITUTION:A signal format of an optical signal OPD transmitted in an optical fiber cable OF consists of frames F repeated in the period of 125 microseconds and the frames F are divided into a reception time section RF and a transmission time section SF. An exchanger transmits a reception signal RD to an optical telephone set OT' are converting the signal into the optical signal OPD. The OT' receives the optical signal OPD from a slit SL provided to the cable OF and transmits the reception signal RD with a reception selecting signal RS. On the other hand, a tranmission code SP of the SF is formed with a voice inputted to a handset M and transmitted after being converted into the signal OPD. Thus, the optical telephone set OT' uses the cable OF in time division for communication.
JP56077644A 1981-05-22 1981-05-22 Optical telephone set Pending JPS57193161A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56077644A JPS57193161A (en) 1981-05-22 1981-05-22 Optical telephone set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56077644A JPS57193161A (en) 1981-05-22 1981-05-22 Optical telephone set

Publications (1)

Publication Number Publication Date
JPS57193161A true JPS57193161A (en) 1982-11-27

Family

ID=13639597

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56077644A Pending JPS57193161A (en) 1981-05-22 1981-05-22 Optical telephone set

Country Status (1)

Country Link
JP (1) JPS57193161A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0225126A (en) * 1988-07-14 1990-01-26 Fujitsu Ltd Optical subscriber line transmission system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0225126A (en) * 1988-07-14 1990-01-26 Fujitsu Ltd Optical subscriber line transmission system

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