JPS5687968A - Circuit of telephone set - Google Patents

Circuit of telephone set

Info

Publication number
JPS5687968A
JPS5687968A JP16399079A JP16399079A JPS5687968A JP S5687968 A JPS5687968 A JP S5687968A JP 16399079 A JP16399079 A JP 16399079A JP 16399079 A JP16399079 A JP 16399079A JP S5687968 A JPS5687968 A JP S5687968A
Authority
JP
Japan
Prior art keywords
loop
channel
given time
switch
disconnection
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
JP16399079A
Other languages
Japanese (ja)
Inventor
Kunio Komatsu
Minoru Yoshida
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
Oki Electric Industry Co Ltd
Original Assignee
Nippon Telegraph and Telephone Corp
Oki Electric Industry 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 Nippon Telegraph and Telephone Corp, Oki Electric Industry Co Ltd filed Critical Nippon Telegraph and Telephone Corp
Priority to JP16399079A priority Critical patent/JPS5687968A/en
Publication of JPS5687968A publication Critical patent/JPS5687968A/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
    • H04M1/26—Devices for calling a subscriber
    • H04M1/53—Generation of additional signals, e.g. additional pulses

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)

Abstract

PURPOSE:To enable the disconnection of a channel loop for a given time apparently, independently of the skill of the operator during communicating, by constituting a loop disconnection generating circuit for a given time in a telephone set. CONSTITUTION:In a given time loop generating circuit 1, the brake contact B of a loop disconnecting information switch 12 and common point C and thyristor 11 are inserted in series with the L1 line of channel. When the dialing and communication are possible with a channel current flowing to a channel circuit 5, and when the switch 12 is operated and loop disconnection information is fed, the break contact B is detached and the channel loop is disconnected. and the charge in a capacitor 13 is discharged through the make side C through a resistor 15. Although the switch 12 restors in a short time, the thyristor 11 turns on after a time by the time constant determined with a capacitor 13 and a resistor 14 is elapsed. In this case, the channel loop is disconnected for a given time apparently independent of the skill of the operator between the lines L1 and L2.
JP16399079A 1979-12-19 1979-12-19 Circuit of telephone set Pending JPS5687968A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16399079A JPS5687968A (en) 1979-12-19 1979-12-19 Circuit of telephone set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16399079A JPS5687968A (en) 1979-12-19 1979-12-19 Circuit of telephone set

Publications (1)

Publication Number Publication Date
JPS5687968A true JPS5687968A (en) 1981-07-17

Family

ID=15784657

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16399079A Pending JPS5687968A (en) 1979-12-19 1979-12-19 Circuit of telephone set

Country Status (1)

Country Link
JP (1) JPS5687968A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58168394A (en) * 1982-03-30 1983-10-04 Fujitsu Ltd Pulse dialler having hooking function
JPS63257359A (en) * 1987-04-15 1988-10-25 Kokusai Electric Co Ltd Hooking system in cordless telephone system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53128205A (en) * 1977-04-12 1978-11-09 Chestel Inc Telephone set

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53128205A (en) * 1977-04-12 1978-11-09 Chestel Inc Telephone set

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58168394A (en) * 1982-03-30 1983-10-04 Fujitsu Ltd Pulse dialler having hooking function
JPS6236422B2 (en) * 1982-03-30 1987-08-06 Fujitsu Ltd
JPS63257359A (en) * 1987-04-15 1988-10-25 Kokusai Electric Co Ltd Hooking system in cordless telephone system

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