JPS56128053A - Control unit of telephone set by sequential counter - Google Patents

Control unit of telephone set by sequential counter

Info

Publication number
JPS56128053A
JPS56128053A JP3205380A JP3205380A JPS56128053A JP S56128053 A JPS56128053 A JP S56128053A JP 3205380 A JP3205380 A JP 3205380A JP 3205380 A JP3205380 A JP 3205380A JP S56128053 A JPS56128053 A JP S56128053A
Authority
JP
Japan
Prior art keywords
counter
telephone set
terminal
level
control unit
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
JP3205380A
Other languages
Japanese (ja)
Other versions
JPH0128555B2 (en
Inventor
Kinnosuke Shimizu
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP3205380A priority Critical patent/JPS56128053A/en
Publication of JPS56128053A publication Critical patent/JPS56128053A/en
Publication of JPH0128555B2 publication Critical patent/JPH0128555B2/ja
Granted 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
    • H04M1/738—Interface circuits for coupling substations to external telephone lines

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To elevate reliablity of a device by confirming at every 1 step of each sequence operation, and making shift to the next step, by means of a gate circuit for which a sequential counter is used. CONSTITUTION:When a call signal has come in from a telephone set A, the main wires L3, L4 of a telephone set C are closed through the monostable multivibrator N1 and the relay (a). Subsequently, the dial tone is detected by the PLL, and the terminal 2 of the counter V is made an H level. After that, an abbreviated telephone number is sent out to the main wires L3, L4 from the dual tone generator VI. When said send-out has been completed, the terminal 3 of the counter V is made an H level through the gate G5. In this way, the operation is shifted to the next step, confirming at every step of each sequence operation, and when the terminal 5 of the counter V has become an H level, the relay (b) and the amplifier III are operated, and the telephone sets A, B and D are connected.
JP3205380A 1980-03-13 1980-03-13 Control unit of telephone set by sequential counter Granted JPS56128053A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3205380A JPS56128053A (en) 1980-03-13 1980-03-13 Control unit of telephone set by sequential counter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3205380A JPS56128053A (en) 1980-03-13 1980-03-13 Control unit of telephone set by sequential counter

Publications (2)

Publication Number Publication Date
JPS56128053A true JPS56128053A (en) 1981-10-07
JPH0128555B2 JPH0128555B2 (en) 1989-06-02

Family

ID=12348115

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3205380A Granted JPS56128053A (en) 1980-03-13 1980-03-13 Control unit of telephone set by sequential counter

Country Status (1)

Country Link
JP (1) JPS56128053A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59161959A (en) * 1983-03-07 1984-09-12 Nippon Resuko:Kk Method and device for recovery of telephone terminal device
JPS60198949A (en) * 1984-03-23 1985-10-08 Pioneer Answerphone Mfg Corp Transfer telephone set
JPS60198951A (en) * 1984-03-23 1985-10-08 Pioneer Answerphone Mfg Corp Transfer telephone set

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5237889A (en) * 1975-09-19 1977-03-24 Motoji Murayama Automatic printing method and apparatus for resisted yarn
JPS5455304A (en) * 1977-10-12 1979-05-02 Takachiho Tsushinkiki Time for automatic answering telephone set

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5237889A (en) * 1975-09-19 1977-03-24 Motoji Murayama Automatic printing method and apparatus for resisted yarn
JPS5455304A (en) * 1977-10-12 1979-05-02 Takachiho Tsushinkiki Time for automatic answering telephone set

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59161959A (en) * 1983-03-07 1984-09-12 Nippon Resuko:Kk Method and device for recovery of telephone terminal device
JPH0225584B2 (en) * 1983-03-07 1990-06-04 Komunikusu Kk
JPS60198949A (en) * 1984-03-23 1985-10-08 Pioneer Answerphone Mfg Corp Transfer telephone set
JPS60198951A (en) * 1984-03-23 1985-10-08 Pioneer Answerphone Mfg Corp Transfer telephone set

Also Published As

Publication number Publication date
JPH0128555B2 (en) 1989-06-02

Similar Documents

Publication Publication Date Title
JPS56128053A (en) Control unit of telephone set by sequential counter
JPS56771A (en) Data transmission system
US2760005A (en) Telephone call originator
JPS5762650A (en) Dial device for telephone
US2294464A (en) Impulse transmitter
JPS5613866A (en) Communication device
JPS5715556A (en) Dial device
JPS5461806A (en) Audio response unit
JPS5283102A (en) Abbreviated dialing unit
JPS54161208A (en) Registration processing system for variable abbreviated dialing
SU1053323A1 (en) Device for checking telephone junction circuits
JPS54162905A (en) Radiotelephony equipment
US1495585A (en) Operator-instruction circuits
US2947824A (en) Apparatus for testing automatic telephone exchange equipment
JPS5453914A (en) Detection circuit for facsimile
JPS5590168A (en) Trunk test system by telephone set
JPS5593360A (en) Automatic callout system for addressed telephone number
JPS526007A (en) Detection system of the off-hook stgnal of a called subscriber
JPS5516571A (en) Balanced hybrid circuit
JPS5514778A (en) Automatic dial device
JPS54125908A (en) Re-acceptance system for holding telephone circuit
JPS5750146A (en) Signal selector
JPS56128060A (en) Calling device
JPS5563161A (en) Subscriber circuit test system by subscriber side starting
SU598266A1 (en) Apparatus for automatic monitoring of telephone number dialling parameters and programmed call devices