JPS5419311A - Delivery system of talkie sound - Google Patents

Delivery system of talkie sound

Info

Publication number
JPS5419311A
JPS5419311A JP8356177A JP8356177A JPS5419311A JP S5419311 A JPS5419311 A JP S5419311A JP 8356177 A JP8356177 A JP 8356177A JP 8356177 A JP8356177 A JP 8356177A JP S5419311 A JPS5419311 A JP S5419311A
Authority
JP
Japan
Prior art keywords
talkie
delivery system
talkie sound
sound
generating source
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.)
Granted
Application number
JP8356177A
Other languages
Japanese (ja)
Other versions
JPS5854708B2 (en
Inventor
Naoki Koshida
Masao Ogiwara
Yoshitaka Osakabe
Ayafumi Komatsu
Shinichi Maeno
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
Hitachi Ltd
NEC Corp
Oki Electric Industry Co Ltd
NTT Inc
Original Assignee
Fujitsu Ltd
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
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, Hitachi Ltd, NEC Corp, Nippon Telegraph and Telephone Corp, Oki Electric Industry Co Ltd, Nippon Electric Co Ltd filed Critical Fujitsu Ltd
Priority to JP52083561A priority Critical patent/JPS5854708B2/en
Publication of JPS5419311A publication Critical patent/JPS5419311A/en
Publication of JPS5854708B2 publication Critical patent/JPS5854708B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
    • H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)

Abstract

PURPOSE:To minimize the effect of earth failure on talkie tone as less as possible, by splitting the subscribers connected to one talkie sound generating source in a plurality of groups and by connecting the line B of each group to the talkie generating source via a diode or resistor.
JP52083561A 1977-07-14 1977-07-14 Tone sound transmission method Expired JPS5854708B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52083561A JPS5854708B2 (en) 1977-07-14 1977-07-14 Tone sound transmission method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52083561A JPS5854708B2 (en) 1977-07-14 1977-07-14 Tone sound transmission method

Publications (2)

Publication Number Publication Date
JPS5419311A true JPS5419311A (en) 1979-02-14
JPS5854708B2 JPS5854708B2 (en) 1983-12-06

Family

ID=13805918

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52083561A Expired JPS5854708B2 (en) 1977-07-14 1977-07-14 Tone sound transmission method

Country Status (1)

Country Link
JP (1) JPS5854708B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58151166A (en) * 1982-03-03 1983-09-08 Fujitsu Ltd Talkie transmission system with regulated call
JPS603253A (en) * 1983-06-20 1985-01-09 Nec Corp Talkie transmission system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5192135A (en) * 1975-02-12 1976-08-12

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5192135A (en) * 1975-02-12 1976-08-12

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58151166A (en) * 1982-03-03 1983-09-08 Fujitsu Ltd Talkie transmission system with regulated call
JPS603253A (en) * 1983-06-20 1985-01-09 Nec Corp Talkie transmission system

Also Published As

Publication number Publication date
JPS5854708B2 (en) 1983-12-06

Similar Documents

Publication Publication Date Title
DE3788702D1 (en) Sound communication unit for an office chair.
JPS51113505A (en) Multiplex optical fiber communication equipment
NL171854C (en) SPEAKER COMBINATION, COMPRISING A NUMBER OF DYNAMIC SPEAKER GROUPS, WHICH ARE NEARLY ESTABLISHED NEXT.
JPS5419311A (en) Delivery system of talkie sound
IT1206411B (en) PROCEDURE AND APPARATUS TO GENERATE AND REGULATE PRESSURE IMPULSES.
JPS5380943A (en) Controllable attenuator
JPS5414604A (en) Constituting system of communication network
ES444925A1 (en) Triazolobenzocycloalkylthiadiazine derivatives
JPS5267504A (en) Speaking current supply and supervision system
JPS53100745A (en) Logic circuit
JPS5422705A (en) Extension subscriber calling system
JPS5414107A (en) Telephone unit for secretary and manager
JPS53119606A (en) Double concentrating transmission system of tree-pair line
JPS554605A (en) Address decoding system
JPS52117017A (en) Pam multiplexing
ES464989A1 (en) Concentration network for a time division multiplex telephone exchange with pulse amplitude modulation
JPS52123118A (en) Digital communication unit completed into duplicated reducdant circuit
JPS5368104A (en) Duplex ommunication unit
JPS537A (en) Multiple transmission system
JPS5683144A (en) Signal transmission system
JPS5464919A (en) Transmission multiplying system
JPS5413711A (en) Main-wire connection system of cordless attendant board
JPS5337290A (en) Group polling control system
JPS5287306A (en) Push-phone type telephone
JPS5440644A (en) Optical fiber cable