JPS57211860A - Incoming regulating system for push-button dial telephone system - Google Patents

Incoming regulating system for push-button dial telephone system

Info

Publication number
JPS57211860A
JPS57211860A JP9599981A JP9599981A JPS57211860A JP S57211860 A JPS57211860 A JP S57211860A JP 9599981 A JP9599981 A JP 9599981A JP 9599981 A JP9599981 A JP 9599981A JP S57211860 A JPS57211860 A JP S57211860A
Authority
JP
Japan
Prior art keywords
calling
incoming
telephone set
signal
push
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
JP9599981A
Other languages
Japanese (ja)
Inventor
Yoshihiro Akita
Taiji Sato
Takeshi Horiuchi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP9599981A priority Critical patent/JPS57211860A/en
Publication of JPS57211860A publication Critical patent/JPS57211860A/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
    • H04M1/66—Substation equipment, e.g. for use by subscribers with means for preventing unauthorised or fraudulent calling
    • H04M1/663—Preventing unauthorised calls to a telephone set
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/66—Substation equipment, e.g. for use by subscribers with means for preventing unauthorised or fraudulent calling

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

PURPOSE:To send a busy tone to a calling subscriber at the regulation of incoming by providing a push-button dial telephone set with a busy tone generator, an incoming regulating switch and a control part. CONSTITUTION:When incoming regulation is not applied to a bush-button dial telephone set shown in the drawing and a switch 80 is off, switches 71, 72 are on. If a calling signal is inputted from a calling telephone set to a voice calling line 17 by a well-known procedure, the calling signal is applied to a speaker 63 through a converting circuit 68 and receiver amplifiers 67, 65 to perform voice calling. When the switch 80 is turned on and incoming regulation is applied to the telephone set shown in the drawing, the switches 71, 72 are turned off, the calling signal from the line 17 is not transmitted to the speaker 63 and, in exchange for the calling signal, a busy signal from a signal source 73 is sent to the calling telephone set through a transmitter amplifier 66 and the converting circuit 68.
JP9599981A 1981-06-23 1981-06-23 Incoming regulating system for push-button dial telephone system Pending JPS57211860A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9599981A JPS57211860A (en) 1981-06-23 1981-06-23 Incoming regulating system for push-button dial telephone system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9599981A JPS57211860A (en) 1981-06-23 1981-06-23 Incoming regulating system for push-button dial telephone system

Publications (1)

Publication Number Publication Date
JPS57211860A true JPS57211860A (en) 1982-12-25

Family

ID=14152786

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9599981A Pending JPS57211860A (en) 1981-06-23 1981-06-23 Incoming regulating system for push-button dial telephone system

Country Status (1)

Country Link
JP (1) JPS57211860A (en)

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